Publications by Prof. Ralf Steudel

• Most frequently cited publications (by 2019):

Properties of Sulfur-Sulfur Bonds (348 citations)
R. Steudel, Angew. Chem. 1975, 87, 683-692; Angew. Chem. Int. Ed. Engl. 1975, 14, 655-664.

Homocyclic Sulfur Molecules (176 citations)
R. Steudel, Top. Curr. Chem. 1982, 102, 149-176.

Elemental Sulfur and Sulfur-Rich Compounds (131 citations)
R. Steudel et al., Top. Curr. Chem. 2003, 230, 1-134.

The Chemistry of Organic Polysulfanes R₂S_n (n > 2). (128 citations)
R. Steudel, Chem. Rev. 2002, 102, 3905-3946.

Mechanism for the Formation of Elemental Sulfur from Aqueous Sulfide in Chemical and Microbiological Desulfurization Processes (128 citations)
R. Steudel, Ind. Eng. Chem. Res. 1996, 35, 1417-1423.

Total number of citations: >7500.

• Publications chronologically (full texts available on www.researchgate.net):

• 303. Spectroscopic and crystal-chemical features of sodalite-group minerals from gem lazurite deposits,
  N. V. Chukanov, A. Sapozhnikov, R. Shendrik, M. Vigasina, R. Steudel, Minerals 2020101042-1065.doi:10.3390/min10111042

• 302. The Chemical Sulfur Cycle,
  R. Steudel in Environmental Technologies to Treat Sulfur Pollution, 2nd ed., (P. N. L. Lens, ed.), Chapter 2, IWA Publishing, London, 2020, pp. 11-53. https://doi.org/10.2166/9781789060966_0011

• 301. The role of polysulfide dianions and radical anions in the chemical, physical and biological sciences, including sulfur-based batteries, R. Steudel, T. Chivers, Chem. Soc. Rev. 2019, 48, 3279-3319 and 4338.

• 300. The Life of Carl Friedrich Claus: A German-British Success Story
  R. Steudel, Lorraine West, Royal Society of Chemistry Historical Group Newsletter, Summer 2015, 68, 9-12.

• 299. R. Steudel, Martin Kaupp, Struktur und Reaktivität von Molekülen, Kap. 6 in: J. E. Huheey, E. A. Keiter, R. L. Keiter, Anorganische Chemie - Prinzipien von Struktur und Reaktivität (R. Steudel, ed.), 5. Aufl., de Gruyter, Berlin, 2014, S. 227-280.

• 298. Polysulfide Chemistry in Sodium-Sulfur Batteries and Related Systems - A Computational Study by G3X(MP2) and PCM Calculations.
  R. Steudel, Yana Steudel, Chem. Eur. J., 2013, 19, 3162-3176.

• 297. R. Steudel, Chemie der Halogene und Edelgase, Kap. 17 in: J. E. Huheey, E. A. Keiter, R. L. Keiter, Anorganische Chemie - Prinzipien von Struktur und Reaktivität (R. Steudel, ed.), 4. Aufl., de Gruyter, Berlin, 2012, S. 1005-1042.

• 296. Dirk Johrendt, H.-J. Lunk, R. Steudel, Anorganische Ketten, Ringe, Käfige und Cluster, Kap. 16 in: J. E. Huheey, E. A. Keiter, R. L. Keiter, Anorganische Chemie - Prinzipien von Struktur und Reaktivität (R. Steudel, ed.), 4. Aufl., de Gruyter, Berlin, 2012, S. 889-1004.

• 295. R. Steudel, Bindungsmodelle in der Anorganischen Chemie: die kovalente Bindung, Kap. 5 in: J. E. Huheey, E. A. Keiter, R. L. Keiter, Anorganische Chemie - Prinzipien von Struktur und Reaktivität (R. Steudel, ed.), 4. Aufl., de Gruyter, Berlin, 2012, S. 159-225.

• 294. Sulfur: Organic Polysulfanes.
  R. Steudel, in: Encyclopedia of Inorganic and Bioinorganic Chemistry, J. Wiley, 2011,34 pages, online publication: doi.org/10.1002/9781119951438.eibc0215.pub2.

• 293. Structural Isomerism and Thermodynamic Properties of the Methylzinc Alkoxide Molecules (MeZnOR)_n (R = Me, tBu) and Cations [(MeZnOMe)_n]⁺ (n = 3, 4) Studied by B3LYP and PCM Calculations.
  Y. Steudel, R. Steudel, J. Phys. Chem. A 2010, 114, 6370-6376.

• 292. Reversal of the Relative Stability of the Isomeric Radicals HSO and HOS on Hydration and Their Rections with Ozone.
  R. Steudel, Yana Steudel, J. Phys. Chem. A 2010, 114, 4437-4445 and 5230.

• 291. Sulfur-Rich Homocycles and Heterocycles: Titanocene Pentasulfide, Cyclo-Heptasulfur and 1,2,3,4,5,6,7-Heptathionane.
  J. Albertsen, R. Steudel, in: Inorganic Experiments, J.D. Woollins (ed.), 3rd. ed., VCH, Weinheim, 2010, p. 330-333.

• 290. Anmerkungen zu den Trendberichten (on the allotropy of chemical elements).
  R. Steudel, Nachrichten aus der Chemie, 2010, 57, 568.

• 289. Derivatives of Cysteine Related to the Thiosulfate Metabolism of Sulfur Bacteria by the Multi-Enzyme Complex "Sox" - Studied by B3LYP-PCM and G3X(MP2) Calculations.
  R. Steudel, Yana Steudel, Phys. Chem. Chem. Phys. (PCCP) 2010, 12, 630-644.

• 288. Microsolvation of Thiosulfuric Acid (H₂S₂O₃) and of its Tautomeric Anions [HSSO₃]^- and [SSO₂(OH)]^- Studied by B3LYP-PCM and G3X(MP2) Calculations .
  R. Steudel, Yana Steudel, J. Phys. Chem. A 2009, 113, 9920-9933 and 11096.

• 287. Sulfur Dioxide and Water: Structures and Energies of the Hydrated Species SO₂^.nH₂O, [HSO₃]^-.nH₂O, [SO₃H]^-.nH₂O and H₂SO₃^.nH₂O (n = 0-8) .
  R. Steudel, Yana Steudel, Eur. J. Inorg. Chem. 2009, 1393-1405.

• 286. Homolytic S-S Bond Dissociation of 11 Bis(thiocarbonyl)disulfides R-C(=S)-S-S-C(=S)R and Prediction of a Novel Rubber Vulcanization Accelerator.
  Adrian M. Mak, R. Steudel, Ming Wah Wong, Chem. Asian J. 2008, 3, 1026-1034.

• 285. Complexation of the Vulcanization Accelerator Tetramethylthiuram Disulfide (TMTD) and Related Molecules with Various Zinc Compounds Including Zinc Oxide Clusters (Zn₄O₄).
  R. Steudel, Y. Steudel, M. W. Wong, Chem. Eur. J. 2008, 14, 919-932.

• 284. Sulfur: Organic Polysulfanes (updated version).
  R. Steudel, in: Encyclopedia of Inorganic Chemistry, 2nd edition, R. H. Crabtree (ed.),
  J. Wiley, Chichester, published online 15 September 2007.

• 283. Charge-Transfer Complexes between the Sulfur Molecules SO₂, S₂O, S₃, SONH and SOCl₂ as Acceptors and the Amine Donors NH₃ and NMe₃ - A Computational Study.
  R. Steudel, Y. Steudel, Eur. J. Inorg. Chem. 2007, 4385-4392.

• 282. Dark-Red O₈-Molecules in Solid Oxygen: Rhomboid Clusters, not Sulfur-like Rings.
  R. Steudel, M. W. Wong, Angew. Chem. 2007, 119, 1798-1801. Angew. Chem. Int. Ed. 2007, 46, 1768-1771.

• 281. Structures and Vibrational Spectra of the Sulfur-Rich Oxides S_nO (n = 4-9). The Importance of pi*-pi* Interactions.
  M. W. Wong, Y. Steudel, R. Steudel, Chem. Eur. J. 2007, 13, 502-514.

• 280. Homolytic Dissociation of the Vulcanization Accelerator Tetramethylthiuram Disulfide (TMTD), and Structures and Stabilities of the Related Radicals Me₂NCS_n (n = 1-4) .
  R. Steudel, Y. Steudel, A. M. Mak, M. W. Wong, J. Org. Chem. 2006, 71, 9302-9311.

• 279. Interaction of Zinc Oxide Clusters with Molecules Related to the Sulfur Vulcanization of Polyolefins ("Rubber").
  R. Steudel, Y. Steudel, Chem. Eur. J. 2006, 12, 8589-8602.

• 278. Geometries, Thermodynamic Properties and Reactions of Methylzinc Alkoxide Clusters Studied by DFT Calculations.
  R. Steudel, Y. Steudel, J. Phys. Chem. A 2006, 110, 8912-8924.

• 277. S₃O₂ - An Unusual Structure with pi*-pi* Interaction.
  M. W. Wong, R. Steudel, Phys. Chem. Chem. Phys. 2006, 8, 1292-1297.

• 276. Sulfur: Organic Polysulfanes.
  R. Steudel, M. Kustos, in: Encyclopedia of Inorganic Chemistry, 2nd edition, Vol. 9, R. B. King (ed.),
  J. Wiley, Sussex, 2005, p. 5403-5435 (wrong authors have been put on this article).

• 275. Isomers of cyclo-Heptasulfur and their Coordination to Li⁺ - an ab initio MO Study.
  M. W. Wong, Y. Steudel, R. Steudel, Inorg. Chem. 2005, 44, 8908-8915.

• 274. Structures of the trisulfur oxides S₃O and S₃O⁺: branched rings, not open chains.
  M. W. Wong, R. Steudel, Chem. Commun. 2005, 3712-3714.

• 273. a) On the Existence and Stability of Branched Selenium Chains: Isomers of Me₂Se₃ and Et₂Se₃.
  R. Steudel, Y. Steudel, Inorg. Chem. 2005, 44, 3007-3009.
  b) Correction to: On the Existence and Stability of Branched Selenium Chains: Isomers of Me₂Se₃ and Et₂Se₃.
  R. Steudel, Y. Steudel, Inorg. Chem. 2005, 44, 7686.

• 272. Metal Complexes of 2,2'-Dipyridyldisulfide with Mercury(II), Cadmium(II) and Zinc(II) Halides and with Cadmium(II) Trifluoromethanesulfonate.
  J. Pickardt, L. von Czarnowski, R. Steudel, M. Borowski, S. Beck, Z. Naturforsch. B 2005, 60, 373-376.

• 271. Coordination of Li⁺, Ca⁺, V⁺ and Cu⁺ to the Sulfur Molecules S₈ and S₄ - A Computational Study.
  Y. Steudel, M. W. Wong, R. Steudel, Eur. J. Inorg. Chem. 2005, 2514-2525.

• 270. Electrophilic Attack on Sulfur-Sulfur Bonds II: Coordination of Lithium Cations to Sulfur-Rich Molecules - an ab initio MO Study.
  Y. Steudel, M. W. Wong, R. Steudel, Chem. Eur. J. 2005, 11, 1281-1293.

• 269. Thia Crown Ether Metal Complexes: Complexes of Silver(I) and Mercury(II) with Tetrathia-12-crown-4, of Silver(I) and Cadmium(II) with Hexathia-18-crown-6, and of Silver(I) with 3,6,9,14-Tetrathiabicyclo[9.2.1]tetradeca-11-13-diene
  J. Pickardt, L. von Czarnowski, R. Steudel, M. Borowski, Z. Naturforsch. B 2004, 59, 1077-1082.

• 268. Electrophilic Attack on Sulfur-Sulfur Bonds I: Protonation of Various Isomers of the Homoatomic Sulfur Molecules S_n (n = 2-8).
  M. W. Wong, T. S. Chwee, R. Steudel, J. Phys. Chem. A 2004, 108, 7091-7098.

• 267. Novel Isomers of Hexasulfur - Prediction of a Stable Prism Isomer and Implications for the Thermal Reactivity of Elemental Sulfur.
  M. W. Wong, Y. Steudel, R. Steudel, J. Chem. Phys. 2004, 121, 5899-5907.

• 266. The Thermal Decomposition of S₂O Forming SO₂, S₃, S₄ and S₅O - an ab initio MO Study.
  R. Steudel, Yana Steudel, Eur. J. Inorg. Chem. 2004, 3513-3521.

• 265. Comment on "Probing the sulfur polymerization transition in situ with Raman spectroscopy" [J. Chem. Phys. 118, 8460 (2003)]
  R. Steudel, B. Eckert, J. Chem. Phys. 2004, 121, 6573-6574.

• 264. Preparation of 17 Chain-like Thiaalkanes R-S_x-R'-S_y-R'-S_z-R (x, y, z > 2) from Titanocene Thiolate Complexes.
  Vera Münchow, R. Steudel, Eur. J. Inorg. Chem. 2004, 718-725.

• 263. Sulfur-Rich Oxides S_nO and S_nO₂. (Review)
  R. Steudel, Top. Curr. Chem. 2003, 231, 203-230.

• 262. Inorganic Polysulfides S_n^2- and Radical Anions S_n^.-. (Review)
  R. Steudel, Top. Curr. Chem. 2003, 231, 127-152.

• 261. Inorganic Polysulfanes H₂S_n. (Review)
  R. Steudel, Top. Curr. Chem. 2003, 231, 99-125.

• 260. Molecular Spectra of Sulfur Molecules and Solid Sulfur Allotropes. (Review)
  R. Steudel, Bodo Eckert, Top. Curr. Chem. 2003, 231, 31-97.

• 259. Structures of the Octahedral Persulfuranes H₄SF₂, H₂SF₄, Me₂SH₄ and Me₂SF₄,
  and Activation Enthalpies for Their cis/trans Isomerization
  Yana Steudel, R. Steudel, Eur. J. Inorg. Chem. 2003, 3798-3802.

• 258. Structure and Spectra of Tetrasulfur S₄ - An ab initio MO Study.
  M. W. Wong, R. Steudel, Chem. Phys. Lett. 2003, 379, 162-169.

• 257. Speciation and Thermodynamics of Sulfur Vapor. (Review)
  R. Steudel, Y. Steudel, M. W. Wong, Top. Curr. Chem. 2003, 230, 117-134.

• 256. Aqueous Sulfur Sols. (Review)
  R. Steudel, Top. Curr. Chem. 2003, 230, 153-166.

• 255. Liquid Sulfur. (Review)
  R. Steudel, Top. Curr. Chem. 2003, 230, 81-116.

• 254. Solid Sulfur Allotropes. (Review)
  R. Steudel, Bodo Eckert, Top. Curr. Chem. 2003, 230, 1-80.

• 253. Structures and Thermodynamics of the Sulfuranes SF₃CN and SF₂(CN)₂ as well as of the Persulfurane SF₄(CN)₂ - An ab initio MO Study by the G3(MP2) Method.
  Y. Steudel, R. Steudel, Eur. J. Inorg. Chem. 2003, 2149-2152.

• 252. Novel Species for the Sulfur Zoo: Isomers of S₈.
  M. W. Wong, Y. Steudel, R. Steudel, Chem. Phys. Lett. 2002, 364, 387-392.

• 251. The Chemistry of Organic Polysulfanes R₂S_n (n > 2).
  R. Steudel, Chem. Rev. 2002, 102, 3905-3946.

• 250. Tetraamidosulfurane and its Decomposition Products - an ab initio MO Study.
  R. Steudel, Y. Steudel, D. Lentz, Eur. J. Inorg. Chem. 2002, 2557-2560.

• 249. Synthetic and Electrochemical Studies on 1,1'-Dithia-Substituted Derivatives of Ferrocene and Structure of 1,3-Dithia-[3]-ferrocenophane [Fe(C₅H₄S)₂CH₂].
  R. Steudel, Karin Hassenberg, Joachim Pickardt, E. Grigotti, P. Zanello, Organometallics 2002, 21, 2604-2608.

• 248. Metabolism of Natural Polymeric Sulfur Compounds
  Christiane Dahl, Alexander Prange, R. Steudel, Chapter 2 in: Biopolymers, Vol. 9 (A. Steinbüchel, S. Matsumura, eds.), Wiley-VCH, Weinheim, 2002, 35-62.

• 247. The Thermal Decomposition of Thiirane - a Mechanistic Study by Ab Initio MO Theory.
  Yana Steudel, R. Steudel, Ming Wah Wong, Chem. Eur. J. 2002, 8, 217-228.

• 246. Gas-Phase Structures and Acidities of the Sulfur Oxoacids H₂S_nO₆ (n = 2 - 4) and H₂S₂O₇.
  A.H. Otto, R. Steudel, Eur. J. Inorg. Chem. 2001, 3047-3054.

• 245. Synthesis and Structure of the Sulfur-Rich Macrocycle (1,2-C₆H₄S₈)₂
  R. Steudel, Karin Hassenberg, Joachim Pickardt, Eur. J. Org. Chem. 2001, 2815-2817.

• 244. An ab initio MO Study of the Gas-Phase Reactions 2 SF₂ = FS-SF₃ = S=SF₄: Molecular Structures, Reaction Enthalpies and Activation Energies.
  Y. Steudel, R. Steudel, M. W. Wong, D. Lentz, Eur. J. Inorg. Chem. 2001, 2543-2548.

• 243. Does the Interconversion of Polysulfur Compounds Proceed via Hypervalent Intermediates? - An ab initio MO Study.
  R. Steudel, Y. Steudel, K. Miaskiewicz, Chem. Eur. J. 2001, 7, 3281-3290.

• 242. Oxidation Products of 1,2,3-Trithia[3]ferrocenophane: Structures of the corresponding Sulfoxide and Sulfone.
  K. Hassenberg, J. Pickardt, R. Steudel, Organometallics 2000, 19, 5244-5246.

• 241. Structures, Energies and Fundamental Vibrations of the Sulfonium Ions H₃S_n⁺ (n = 1-4).
  A.H. Otto, R. Steudel, Z. Anorg. Allg. Chem. 2000, 626, 2063-2068.

• 240. Geometries, Acidities and Dissociation Reactions of the Gaseous Superacids H₂S₂O₃, H₂SO₅, HSO₃F and HSO₃Cl.
  R. Steudel, A.H. Otto, Eur. J. Inorg. Chem. 2000, 2379-2386.

• 239. Preparation of Organic Polysulfanes R₂S_n (n = 5, 7, 8, 9) from Sulfenylchlorides RSCl and Transition Metal Polysulfido Complexes,
  R. Steudel, K. Hassenberg, V. Münchow, O. Schumann, J. Pickardt, Eur. J. Inorg. Chem. 2000, 921-928.

• 238. The Chemical Sulfur Cycle,
  R. Steudel in Environmental Technologies to Treat Sulfur Pollution (P. Lens and L. Hulshoff Pol, eds.), Chapter 1, Portland Press, Essex, 2000, p. 1-32.

• 237. Gas Phase Acidities of Nine Sulfur Oxoacids of Composition [H₂,S,O_n] (n = 1 - 4).
  A.H. Otto, R. Steudel, Eur. J. Inorg. Chem. 2000, 617 -624.

• 236. The Gas Phase Acidities of the Sulfanes H₂S_n (n = 1 - 4).
  A.H. Otto, R. Steudel, Eur. J. Inorg. Chem. 1999, 2057-2061.

• 235. In situ analysis of sulfur in the sulfur globules of phototrophic sulfur bacteria by X-Ray absorption near edge spectroscopy.
  A. Prange, I. Arzberger, C. Engemann, H. Modrow, O. Schumann, H.G. Trüper, R. Steudel, C. Dahl, J. Hormes, Biophysica Biochimica Acta 1999, 1428, 446 - 454.

• 234. Synthesis and Crystal Structure of [Fe(C₅H₄ )₂S₃O] - the First Organometallic Trisulfane Oxide.
  R. Steudel, K. Hassenberg, J. Pickardt, Organometallics 1999, 18, 2910-2911.

• 233. The Formation of the Sulfur Halides SX₄ from SX₂ and X₂: Reaction Enthalpies, Transition States and Activation Energies for X = F and Cl.
  Yana Drozdova, R. Steudel, Wolfram Koch, Karol Miaskiewicz, Igor Topol, Chem. Eur. J. 1999, 5, 1936-1943.

• 232. The Chemistry of Aqueous Sulfur Sols - Models for Bacterial Sulfur Globules?
  R. Steudel, A. Albertsen in: Biochemical Principles and Mechanisms of Biosynthesis and Biodegradation of Polymers, A. Steinbüchel (ed.), Wiley-VCH, Weinheim 1999, p. 17-26.

• 231. A New Allotrope of Elemental Sulfur: Convenient Preparation of cyclo-S₁₄ from S₈.
  R. Steudel, O. Schumann, J. Buschmann, P. Luger, Angew. Chem. 110 (1998) 2502-2504; Angew. Chem. Int. Ed. 37 (1998) 2377 - 2378.

• 230. S₄NR (R = Me, nOct) as Novel Chelating Ligands in Titanocene Complexes and First Synthesis of Small Sulfurimide Heterocycles S_nNR (n = 5, 6).
  R. Steudel, O. Schumann, J. Buschmann, P. Luger, Angew. Chem. 110 (1998) 515-517; Angew. Chem. Int. Ed. 37 (1998) 492 - 494.

• 229. Structures and Energies of Various Isomers of Dithionous Acid H₂S₂O₄ and of Its Anion HS₂O₄^-.
  Y. Drozdova, R. Steudel, R.H. Hertwig, W. Koch, Th. Steiger, J. Phys. Chem. 102 (1998) 990-996.

• 228. New Titanocene Complexes [Cp₂Ti(m-S₂)₂NR] (with R = Me and nOct) as Transfer Reagents for the Synthesis of the Heterocycles S₅NR and S₆NR.
  O. Schumann, R. Steudel, Phosphorus Sulfur Silicon 124&125 (1997) 529-532.

• 227. Synthesis of Large C-S-N Heterocycles from [Cp₂TiS₇NR] and Aromatic Bis-Sulfenyl Chlorides (R = H, Me).
  K. Hassenberg, R. Steudel, Phosphorus Sulfur Silicon 124&125 (1997) 525-528.

• 226. Cyclic Sulfur Imides: When and Why is the Geometry at Nitrogen Planar? - An ab-initio Study.
  Y. Drozdova, R. Steudel, Phosphorus Sulfur Silicon 124&125 (1997) 521-524.

• 225. Novel Titanocene Thiolate Complexes and their Application to Prepare New Sulfur Containing Heterocycles.
  R. Steudel, M. Kustos, V. Münchow, U. Westphal, Chem. Ber. 130 (1997) 757-764 (now: Eur. J. Inorg. Chem.).

• 224. How Unstable are Thiosulfoxides? - An ab-initio MO Study of Various Disulfanes R-S-S-R (R = H, Me, Pr, All), their Branched Isomers R₂S=S as well as the Related Transition States.
  R. Steudel, Y. Drozdova, K. Miaskiewicz, R.H. Hertwig, W. Koch, J. Am. Chem. Soc. 119 (1997) 1990-1996.

• 223.Synthesis and Structure of Bis[di(methylcyclopentadienyl)chloro-titanium]trisulfide [(Cp'₂ClTi)₂S₃] - a Reagent for Trisulfide Ligand Transfer Reactions,
  R. Steudel, M. Kustos, A. Prenzel, Z. Naturforsch. Part B 52 (1997) 79-82.

• 222. Large Sulfur-Nitrogen Heterocycles: Preparation of the Sulfur Imides S_nNH (n = 8, 9, 11) and X-Ray Structural Analyses of S₈NH and S₉NH.
  R. Steudel, K. Bergemann, J. Buschmann, P. Luger, Angew. Chem. 108 (1996) 2641-2643; Angew. Chem. Int. Ed. 35 (1996) 2537 - 2539.

• 221. Das gelbe Element und seine erstaunliche Vielseitigkeit.
  R. Steudel, Chemie unserer Zeit, 30 (1996) 226-234.

• 220. Preparation of Spiro-Cyclic Organic Polysulfanes of Type C₆H₁₀S_n and X-Ray Structural Analysis of C₆H₁₀S₁₁.
  R. Steudel, V. Münchow, J. Pickardt, Z. Anorg. Allg. Chem. 622 (1996) 1594-1600.

• 219. Oxidation Products of Organic Trisulfanes: Molecular Structures, Energies and Vibrational Data of the Dimethyltrisulfane Oxides Me₂S₃O and Me₂S₃O₂.
  R. Steudel, Y. Drozdova, Chem. Eur. J. 2 (1996) 1060-1067.

• 218. Application of Dicyanohexasulfane for the Synthesis of cyclo-Nonasulfur; Crystal and Molecular Structures of S₆(CN)₂ and of alpha-S₉.
  R. Steudel, K. Bergemann, J. Buschmann, P. Luger, Inorg. Chem. 35 (1996) 2184-2188.

• 217. A Mechanism for the Formation of Elemental Sulfur from Aqueous Sulfide in Chemical or Microbiological Desulfurization Processes.
  R. Steudel, Ind. Eng. Chem. Res. 35 (1996) 1417-1423.

• 216. Synthesis of Dicyclopentadiene Polysulfanes C₁₀H₁₂S_n with n = 4...8 using Titanocene Polysulfide Complexes as Sulfur Transfer Reagents.
  M. Kustos, R. Steudel, J. Org. Chem. 60 (1995) 8056-8061.

• 215. Preparation and X-Ray Structural Analysis of the Remarkably Stable Bis(triphenylmethyl)trisulfane-2-oxide R₂S₃O.
  M. Pridöhl, R. Steudel, J. Buschmann, P. Luger, Z. Anorg. Allg. Chem. 621 (1995) 1672-1676.

• 214. A Derivative of Perthiocarbonic Acid H₂CS₄: X-Ray Structural Analysis of Bis(triphenylmethyl) Perthiocarbonate (Ph₃C)₂CS₄.
  V. Münchow, R. Steudel, J. Buschmann, P. Luger, Z. Anorg. Allg. Chem. 621 (1995) 1513-1516.

• 213. Synthesis of Bis(trichloromethyl)tetra- and -heptasulfane from Titanocene Polysulfide Complexes and Structure of (CCl₃)₂S₇.
  R. Steudel, M. Pridöhl, J. Buschmann, P. Luger, Chem. Ber. 128 (1995) 725-728 (now: Eur. J. Inorg. Chem.).

• 212. Sulfuric Acid from Sulfur Trioxide and Water: A Surprizingly Complex Reaction.
  R. Steudel, Angew. Chem. 107 (1995) 1433-1435, Angew. Chem. Int. Ed. Engl. 34 (1995) 1313-1315.

• 211. S₇NH and S₇NCH₃ as Novel Chelating Ligands in [(h⁵-C₅H₅)₂Ti]-Complexes: Synthesis of Medium-Sized Sulfur-Nitrogen Rings by Ligand Transfer.
  K. Bergemann, M. Kustos, P. Krüger, R. Steudel, Angew. Chem. 107 (1995) 1481-1483; Angew. Chem. Int. Ed. Engl. 34 (1995) 1330-1331.

• 210. The Synthesis of Cyclic Organosulfur Compounds from (C₅H₅)₄Ti₂C₂S₄ by Ligand Transfer Reactions.
  R. Steudel, U. Westphal, J. Pickardt, Chem. Ber. 128 (1995) 561-564 (now: Eur. J. Inorg. Chem.).

• 209. The Reaction of H₂S with SO₂: Molecular Structures, Energies and Vibrational Data of Seven Isomeric Forms of H₂S₃O.
  Y. Drozdova, R. Steudel, Chem. Eur. J. 1 (1995) 193-198.

• 208. Structures, Energies, Torsional Barriers and Vibrational Spectra of Three Rotamers of Tetrasulfane, H₂S₄.
  Y. Drozdova, K. Miaskiewicz, R. Steudel, Z. Naturforsch. 50b (1995) 889-893.

• 207. Crystal and Molecular Structures as well as Spectra of Two Organic Tetrasulfanes R₂S₄ (R = 2-Benzothiazolyl and 4-Chlorophenyl).
  R. Steudel, P. Krüger, I. Florian, M. Kustos, Z. Anorg. Allg. Chem. 621 (1995) 1021-1024.

• 206. Gas-Phase Structure and Vibrational Spectra of Dimethoxydisulfane, (CH₃O)₂S₂.
  R. Steudel, H. Schmidt, E. Baumeister, H. Oberhammer, T. Koritsanszky, J. Phys. Chem. 99 (1995) 8987-8994.

• 205. Structures, Energies and Vibrational Spectra of Several Isomeric Forms of H₂S₂O and Me₂S₂O - an ab-initio Study.
  R. Steudel, Y. Drozdova, R. Hertwig, W. Koch, J. Phys. Chem., 99 (1995) 5319-5324.

• 204. The Utilization of Titanocene Polysulfide Complexes for the Synthesis of Organic Polysulfanes.
  R. Steudel, M. Kustos, M. Pridöhl, U. Westphal, Phosphorus Sulfur Silicon 93/94 (1994) 61-72.

• 203. Sulfur-Rich Homocycles and Heterocycles: Titanocene Pentasulfide, Cyclo-Heptasulfur and 1,2,3,4,5,6,7-Heptathionane.
  J. Albertsen, R. Steudel, in: Inorganic Experiments, J.D. Woollins (ed.), VCH, Weinheim 1994, p. 243-245.

• 202. Structures, Energies and Vibrational Spectra of Four Isomers of the Hydrogenthiosulfite Anion (HS₂O₂^-) and of the Related Chlorosulfite Anion (ClSO₂^-) - an ab-initio-MO Study.
  K. Miaskiewicz, R. Steudel, J. Chem. Soc., Dalton Trans. 1994 2919-2923.

• 201. Synthesis and Vibrational Spectra of New Bis(alkoxysulfane)dichloropalladium(II) Complexes and X-Ray Structural Analysis of [PdCl₂{S(OPrⁱ)₂}₂].
  R. Steudel, M. Kustos, H. Schmidt, E. Wenschuh, M. Kersten, A. Wloszczynski, J. Chem. Soc., Dalton Trans. 1994 2509-2514.

• 200. Preparation of Long-Chain Polysulfanes from Dialkoxysulfanes: Synthesis of Bis-[2,3,4,6-tetra-O-acetyl-1-deoxy-b-D-glucopyranosyl]tetrasulfane and -undecasulfane.
  R. Steudel, H. Schmidt, Chem. Ber. 127 (1994) 1219-1221 (now: Eur. J. Inorg. Chem.).

• 199. Structure and Electron Density of Solid Dimethoxydisulfane (CH₃O)₂S₂.
  T. Koritsanszky, J. Buschmann, P. Luger, H. Schmidt, R. Steudel, J. Phys. Chem. 98 (1994) 5416-5421.

• 198. Propanoicacid-3-(2-benzothiazolyldithio)methylester.
  P. Krüger, M. Kustos, R. Steudel, Acta Crystallogr. C 50 (1994) 767-769.

• 197. Thiosulfate and tetrathionate degradation as well as biofilm generation by Thiobacillus intermedius and Thiobacillus versutus studied by microcalorimetry, HPLC, and ion-pair chromatography.
  S. Wentzien, W. Sand, A. Albertsen, R. Steudel, Arch. Microbiolog. 161 (1994) 116-125.

• 196. Sulfur: Organic Polysulfanes.
  R. Steudel, M. Kustos, in: Encyclopedia of Inorganic Chemistry, 1st edition, Vol. 7, B. King (ed.), J. Wiley, Sussex, 1994, p. 4009-4038.

• 195. Crystal and Molecular Structure of Dicyanotetrasulfane S₄(CN)₂.
  R. Steudel, K. Bergemann, M. Kustos, Z. Anorg. Allg. Chem. 620 (1994) 117-120.

• 194. The Decomposition of Aqueous Dithionite and its Reactions with Polythionates S_nO₆^2- (n = 3-5) Studied by Ion-Pair Chromatography.
  V. Münchow, R. Steudel, Z. Anorg. Allg. Chem. 620 (1994) 121-126.

• 193. Synthesis and Spectroscopic Properties of Diarylpolyselanes R₂Se_x (x = 2-7) and of Diaryldiselenapolysulfanes (RSe)₂S_y (y = 1-15) with R = 4-Cl-C₆H₄.
  M. Pridöhl, R. Steudel, F. Baumgart, Polyhedron 12 (1993) 2577-2585.

• 192. The Photoelectron Spectra of Dimethoxysulfane (CH₃O)₂S and Dimethoxydisulfane (CH₃O)₂S₂.
  R. Gleiter, I. Hyla-Kryspin, H. Schmidt, R. Steudel, Chem. Ber. 126 (1993) 2363-2365 (now: Eur. J. Inorg. Chem.).

• 191. Thermal Polymerization of the Cyclic Seleniumsulfide 1,2-Se₂S₅ Studied by DSC, HPLC, Raman Spectroscopy and X-Ray Diffraction.
  R. Steudel, M. Pridöhl, H. Hartl, I. Brüdgam, Z. Anorg. Allg. Chem. 619 (1993) 1589-1596.

• 190. Synthesis and Structure of Dicyanononasulfane S₉(CN)₂ - an Unbranched Chain of 13 Atoms.
  R. Steudel, K. Bergemann, J. Buschmann, P. Luger, Angew. Chem. 105 (1993) 1781-1782; Angew. Chem. Int. Ed. Engl. 32 (1993) 1702-1703.

• 189. Crystal and Molecular Structures of the Sulfur-Rich Organic Polysulfanes Heptathiacyclononane (C₂H₄S₇) and Bis(triphenylmethyl)penta- and hexasulfane.
  M. Kustos, J. Pickardt, J. Albertsen, R. Steudel, Z. Naturforsch. 48b (1993) 928-934.

• 188. Geometries and Energies of the Radical Anion SO₂^.- as well as of Three Isomeric Structures of the Dithionite Anion (S₂O₄^2-).
  R. Steudel, T. Steiger, J. Mol. Struct. (THEOCHEM) 284 (1993) 55-59.

• 187. Evidence for branch-bonding sulfur intermediates in the desulfurization of 2,2-di-chloro-3[9-fluorenyl]thiirane.
  W. Chew, D.N. Harpp, R. Steudel, S. Förster, Sulfur Lett. 15 (1993) 247-252.

• 186. X-ray Structural Analysis and Vibrational Spectra of Sodium Cysteine-S-sulfonate, H₃NCH(COO)CH₂S₂O₃Na^. 1.5H₂O.
  R. Steudel, A. Albertsen, M. Kustos, J. Pickardt, Z. Naturforsch. 48b (1993) 555-560.

• 185. Determination of Dithionite (S₂O₄^2-) and Hydroxymethanesulfinate (Rongalite, HOCH₂SO₂^-) by Ion-Pair Chromatography.
  R. Steudel, V. Münchow, J. Chromatogr. 623 (1992) 174-177.

• 184. Structure and Electron Density of Solid Dimethoxysulfane, (CH₃O)₂S.
  J. Buschmann, P. Luger, T. Koritsanszky, H. Schmidt, R. Steudel, J. Phys. Chem. 96 (1992) 9243-9250.

• 183. Determination of Cysteine-S-sulfonate (RSSO₃^-) by Ion-Pair Chromatography and Its Formation by Autoxidation of Cysteine Persulfide (RSS^-).
  R. Steudel, A. Albertsen, J. Chromatogr. 606 (1992) 260-263.

• 182. The Synthesis of Sulfur- and Selenium-Containing Organic and Inorganic Rings from Titanocene Precursors.
  R. Steudel, Chapt. 13 in: The Chemistry of Inorganic Ring Systems, R. Steudel (ed.), Elsevier Science Publ., Amsterdam 1992, p. 233-253.

• 181. Chlorination of the Heterocycle 1,2-Se₂S₅ to Give Se₂S₅Cl₂.
  M. Pridöhl, R. Steudel, F. Baumgart, Phosphorus Sulfur Silicon 65 (1992 ) 169-172.

• 180. Silicon- and Germanium-Containing Titanocene Chalcogenide Complexes as Transfer Reagents in Ring Synthesis.
  J. Albertsen, R. Steudel, Phosphorus Sulfur Silicon 65 (1992 ) 165-168.

• 179. Synthesis, Structure and Reactions of CpTiSe₃S₂ and CpTiSe₄S (Cp' = C₅H₄CH₃).
  M. Papavassiliou, J. Pickardt, R. Steudel, Phosphorus Sulfur Silicon 65 (1992) 161-164.

• 178. New Titanacycles with Chelating Polychalcogenide Ligands.
  B. Holz, R. Luttkus, R. Steudel, Phosphorus Sulfur Silicon 65 ( 1992) 157-160.

• 177. New Sulfur Containing Titanacycles.
  U. Westphal, R. Steudel, Phosphorus Sulfur Silicon 65 (1992 ) 151-155.

• 176. Structures, Relative Stabilities and Vibrational Spectra of Several Isomeric Forms of Sulfoxylic Acid (H₂SO₂) and Its Anion (HSO₂^-) - An ab initio Study.
  T. Steiger, R. Steudel, J. Mol. Struct. 257 (1992) 313-323.

• 175. A Likely Mechanism of Solvent-induced Sulfur Loss from Sulfenylthiosulfonates.
  C.R. Williams, J.G. MacDonald, D.N. Harpp, R. Steudel, S. Förster, Sulfur Letters 13 (1992) 247-255.

• 174. Generation and Characterization of Dihydroxy Disulfide, HOSSOH: The Chain-Like Isomer of Thiosulfurous Acid.
  H. Schmidt, R. Steudel, D. Sülzle, H. Schwarz, Inorg. Chem. 31 (1992) 941-944.

• 173. The Structures of Thiosulfuric Acid (H₂S₂O₃) and Its Monoanion HS₂O₃^-.
  K. Miaskiewicz, R. Steudel, Angew. Chem. 104 (1992) 87-89; Angew. Chem. Int. Ed. Engl. 31 (1992) 58-59.

• 172. Structure and Electron Density Distribution of Dimethyl Sulfoxylate (CH₃O)₂S and Dimethoxy Disulfane (CH₃O)₂S₂.
  J. Buschmann, T. Koritsanszky, P. Luger, H. Schmidt, R. Steudel, Z. Kristallogr., Suppl. Issue No. 3, 1991, 40.

• 171. Spectroscopic Characterization of the Selenium-Rich Heterocycles Se₅S, Se₇S and 1,5-Se₆S₂.
  R. Steudel, M. Papavassiliou, F. Baumgart, Z. Naturforsch. Part B 46b (1991) 1674-1678.

• 170. Synthesis and Properties of Cp₂TiS₂SiR₂, Cp₂TiS₂GeR₂ and CpTiS₂SnR₂ (Cp = C₅H₅; Cp' = CH₃C₅H₄; R = C₆H₅).
  J. Albertsen, R. Steudel, J. Organomet. Chem. 424 (1992) 153-158.

• 169. Synthesis of Sulfur-Rich Organic Polysulfanes Utilizing Titanocene Pentasulfide as a Sulfur-Transfer Reagent.
  R. Steudel, S. Förster, J. Albertsen, Chem. Ber. 124 (1991) 2357-2359 (now: Eur. J. Inorg. Chem.).

• 168. Structures and Relative Stabilities of Seven Isomeric Forms of H₂S₂O₂.
  K. Miaskiewicz, R. Steudel, J. Chem. Soc., Dalton Trans. 1991, 2395-2399.

• 167. Structure of a Norbornane Polysulfane: Exo-3,4,5,6,7- Pentathiatricyclo-[7.2.1.02,8]dodecane.
  J. Pickardt, M. Kustos, R. Steudel, Acta Crystallogr. C48 (1991) 190-191.

• 166. Synthesis and Characterization of the New Bicyclic Sulfur-Carbon Compounds C₆H₈S₈, C₄H₄S₇ and C₄H₄S₈.
  U. Westphal, R. Steudel, Chem. Ber. 124 (1991) 2141-2143 (now: Eur. J. Inorg. Chem.).

• 165. Systematic Build-Up of Organic Polysulfanes - Synthesis and Spectra of the Cyclic Hepta- and Octasulfanes of Norbornane, C₇H₁₀S₇ and C₇H₁₀S₈.
  R. Steudel, M. Kustos, Phosphorus Sulfur Silicon 62 (1991) 127-137.

• 164. Gas Phase Structure and Vibrational Spectra of Dimethoxysulphane (CH₃O)₂S.
  E. Baumeister, H. Oberhammer, H. Schmidt, R. Steudel, Heteroatom Chem. 2 (1991) 633-642.

• 163. Cp₂TiS₅O and Cp₂TiOS₅ - Isomeric Titanocene Complexes with Two Novel S-O Chelate Ligands.
  R. Steudel, A. Prenzel, J. Pickardt, Angew. Chem. 103 (1991) 586-588; Angew. Chem. Int. Ed. Engl. 30 (1991) 550-552.

• 162. Raman, Mass, and ⁷⁷Se NMR Spectra of SeSCl₂ and its Reactions with Potassium Iodide and Titanocene Pentasulphide to Produce Cyclic Selenium Sulphides.
  R. Steudel, B. Plinke, D. Jensen, F. Baumgart, Polyhedron 10 (1991) 1037-1048.

• 161. Reactions of Titanocene Polyselenide Complexes with Methyldichloroarsane: Synthesis and Properties of (CH₃C₅H₄)₂Ti(µ²-Se)₂AsCH₃ and of (CH₃As)₂Se₃.
  B. Holz, R. Steudel, J. Organomet. Chem. 406 (1991) 133-138.

• 160. Growth of Wolinella succinogenes with Polysulphide as Terminal Acceptor of Phosphorylative Electron Transport.
  O. Klimmek, A. Kröger, R. Steudel, G. Holdt, Arch. Microbiol. 155 (1991) 177-182.

• 159. The Retention of Six-, Seven-, Eight- and Twelve-Membered Ring Molecules of Type Se_xS_y in Reversed-Phase HPLC, Prediction of Retention for Unknown Se_xS_y Heterocycles and Analysis of Sulfur-Selenium-Melts.
  R. Steudel, E.-M. Strauss, D. Jensen, Z. Naturforsch. 45b (1990) 1282-1290.

• 158. Synthesis and Spectra of New Titanocene Complexes Containing the Chelating Ligands C₂S₄^4- , C₂S₅^2- and C₂S₆^2-.
  R. Steudel, U. Westphal, J. Organomet. Chem. 388 (1990) 89-94.

• 157. Synthesis of Isopropoxy-Chloro-Disulfane (ROSSCl) and its Reaction with Titanocene Pentasulfide to give (RO)₂S₉.
  H. Schmidt, R. Steudel, Z. Naturforsch. 45b (1990) 557-558.

• 156. ⁷⁷Se NMR and Raman Spectroscopic Characterization of Selenium Dibromide (SeBr₂) and its Reaction with Titanocene Pentasulfide to give Cyclic Selenium Sulfides of Ring Size 6,7,8 and 12.
  R. Steudel, D. Jensen, F. Baumgart, Polyhedron 9 (1990) 1199-1208.

• 155. Search for polythionates in cultures of Chromatium vinosum after sulfide incubation.
  R. Steudel, G. Holdt, P.T. Visscher, H. van Gemerden, Arch. Microbiol. 153 (1990) 432-437.

• 154. Raman Spectroscopic discovery of the hydrogenthiosulphate anion, HSSO₃^-, in solid NH₄HS₂O₃.
  R. Steudel, A. Prenzel, Z. Naturforsch. 44b (1989) 1499-1502.

• 153. The electrochemical proton potential generated by the sulphur respiration of Wolinella succinogenes.
  C. Wloczyk, A. Kröger, T. Göbel, G. Holdt, R. Steudel, Arch. Microbiol. 152 (1989) 600-605.

• 152. Preparation and Structure of (C₅H₅)₂TiS₄AsCH₃ - a new Reagent for the Synthesis of Sulfur-Rich Heterocycles.
  R. Steudel, B. Holz, J. Pickardt, Angew. Chem. 101 (1989) 1301-1302; Angew. Chem. Int. Ed. Engl. 28 (1989) 1269-1271.

• 151. Ion-pair chromatographic separation of inorganic sulphur anions including polysulphide.
  R. Steudel, G. Holdt, T. Göbel, J. Chromatogr. 475 (1989) 442-446.

• 150. The Molecular Nature of the Hydrophilic Sulfur Prepared from Aqueous Sulfide and Sulfite (Selmi Sulfur Sol).
  R. Steudel, T. Göbel, G. Holdt, Z. Naturforsch. 44b (1989) 526-530.

• 149. Comments on the "Separation of Dihydrogenpolysulfides (Polysulfanes) using Reversed Phase HPLC" reported by H.J. Möckel;
  R. Steudel, T. Göbel, H. Schmidt, G. Holdt, Fresenius' Z. Anal. Chem. 334 (1989) 266-269.

• 148. Photoinduced ESR Signals in Orthorhombic cyclo-Octasulfur (a-S₈) and in Quenched Liquid Sulfur at Low Temperatures.
  R. Steudel, J. Albertsen, K. Zink, Ber. Bunsenges. Phys. Chem. 93 (1989) 502-509.

• 147. Dinuclear Titanocene Chalcogenides as Sufur and Selenium Transfer Reagents in Ring Synthesis.
  R. Steudel, D. Jensen, M. Papavassiliou, Phosphorus Sulfur Silicon 41 (1989) 349-353.

• 146. On the Nature of the "Elemental Sulfur" (S^o) Produced by Sulfur-Oxidizing Bacteria - a Model for S^o Globules.
  R. Steudel in: Biology of Autotrophic Bacteria, H.G. Schlegel, B. Bowien (eds.), Chapt. 16, Sci. Tech. Publ., Madison (USA) 1988, p. 289-303.

• 145. Preparation of Cyclopentadecasulfur (S₁₅) from Titanocenepentasulfide and Sulfuryl Chloride.
  R. Strauss, R. Steudel, Z. Naturforsch. 43b (1988) 1151-1155.

• 144. Solubilization of Elemental Sulfur in Water by Cationic and Anionic Surfactants.
  R. Steudel, G. Holdt, Angew. Chem. 100 (1988) 1409-1410; Angew. Chem. Int. Ed. Engl. 27 (1988) 1358-1359.

• 143. Raman Spectrometric Study of the Composition of Sulfur Vapor at Temperatures up to 700°C.
  P. Lenain, E. Picquenard, J. Corset, D. Jensen, R. Steudel, Ber. Bunsenges. Phys. Chem. 92 (1988) 859-870.

• 142. Synthesis and Structure of 1,4-[(RCp)₂Ti]₂Se₄ and its Application to the "Chalcogenospecific" Synthesis of 1,2,5,6-Se₄S₄.
  D.M. Giolando, M. Papavassiliou, J. Pickardt, T.B. Rauchfuss, R. Steudel, Inorg. Chem. 27 (1988) 2596-2600.

• 141. Detection of Reactive Sulfur Molecules (S₆, S₇, S₉, S_µ) in Commercial Sulfur, in Sulfur Minerals and in Sulfur Melts Slowly Cooled to 20°C.
  R. Steudel, B. Holz, Z. Naturforsch. 43b (1988) 581-589.

• 140. The Molecular Composition of Hydrophilic Sulfur Sols Prepared by Acid Decomposition of Thiosulfate.
  R. Steudel, T. Göbel, G. Holdt, Z. Naturforsch. 43b (1988) 203-218.

• 139. Elemental Sulfur as an Intermediate in the Oxidation of Reduced Sulphur Compounds by Thiobacillus ferrooxidans: Localization and Characterization.
  W. Hazeu, R. Steudel, W.H. Batenburg-van de Vegte, P. Bos, J.G. Kuenen, Symposium Biohydrometallurgy, Proceedings, Univ. of Warwick, Great Britain, July 1987.

• 138. ⁷⁷Se NMR Spectra of Se₇ and Se₅S₂ Prepared from Titanocene Pentaselenide. Evidence for Pseudorotation.
  R. Steudel, M. Papavassiliou, W. Krampe, Polyhedron 7 (1988) 581-583.

• 137. Chromatographic Separation of Polythionates, Selenopolythionates and of Sulfur-Rich Carbonic Acids.
  G. Holdt, T. Göbel, R. Steudel, Königsteiner Chromatographie-Tage, Proceedings, Waters, Eschborn 1987, p. 437-447.

• 136. Optical Absorption Spectra of the Homocyclic Sulfur Molecules S_n (n = 6,7,8,9,10,12,15,20) in Solution.
  R. Steudel, D. Jensen, P. Göbel, P. Hugo, Ber. Bunsenges. Phys. Chem. 92 (1988) 118-122.

• 135. Raman and ⁷⁷Se NMR Spectroscopic Evidence for Pseudorotation of Seven-Membered Chalcogen Rings in Solution.
  R. Steudel, M. Papavassiliou, D. Jensen, K. Seppelt, Z. Naturforsch. 43b (1988) 245-247.

• 134. Selenium Homocycles and Sulphur-Selenium Heterocycles.
  R. Steudel, E.-M. Strauss, in The Chemistry of Inorganic Homo- and Heterocycles, I. Haiduc, D.B. Sowerby (eds.), Vol. 2, Academic Press, London 1987, p. 769-792.

• 133. Sulfur Homocycles, R. Steudel in The Chemistry of Inorganic Homo- and Heterocycles, I. Haiduc, D.B Sowerby (eds.), Vol. 2, Academic Press, London 1987, p. 737-768.

• 132. Recent Developments in the Chemistry of Elemental Sulfur and Sulfur-Rich Compounds.
  R. Steudel, Int. Symposium Elemental Sulfur in Agriculture, Proceedings, Acropolis, Nice, France, 25-27 Mars 1987, Vol. 1, p. 7-16.

• 131. Sulfur-34 Isotopic Exchange between Liquid Carbondisulfide and Elemental Sulfur.
  R. Steudel, B. Holz, Z. Naturforsch. 42b (1987) 691-694.

• 130. Photolysis of Elemental Sulfur (S₆, S₇, S₈, S₁₀, S₁₂) in Carbondisulfide Solution.
  E.-M. Strauss, R. Steudel, Z. Naturforsch. 42b (1987) 682-690.

• 129. Chromatographic Separation of Higher Polythionates S_nO₆^2- (n = 3...22) and Their Detection in Cultures of Thiobacillus ferrooxidans; Molecular Composition of Bacterial Sulfur Secretions.
  R. Steudel, G. Holdt, T. Göbel, W. Hazeu, Angew. Chem. 99 (1987) 143-146; Angew. Chem. Int. Ed. Engl. 26 (1987) 151-153.

• 128. Low Temperature Raman Spectra of Dichlorosulfane (SCl₂), Tetrachlorosulfurane (SCl₄), Dichlorodisulfane (S₂Cl₂) and Dichlorodiselane (Se₂Cl₂).
  R. Steudel, D. Jensen, B. Plinke, Z. Naturforsch. 42b (1987) 163-168.

• 127. Ab initio Study of Hypervalent Sulfur Hydrides as Model Intermediates in the Interconversion Reactions of Compounds Containing Sulfur-Sulfur Bonds.
  R. Laitinen, T. Pakkanen, R. Steudel, J. Am. Chem. Soc. 109 (1987) 710-714.

• 126. Selenium Content of Naturally Occurring Elemental Sulfur, of Industrially Produced Sulfur and of the Mineral Seleniumsulfur.
  R. Steudel, E.-M. Strauss, M. Papavassiliou, P. Brätter, W. Gatschke, Phosphorus & Sulfur 29 (1987) 17-21.

• 125. Rapid Chromatographic Separation and Determination of Homocyclic Sulfur Molecules S_n (n = 6...28) by HPLC.
  R. Strauss, R. Steudel, Fresenius' Z. Anal. Chem. 326 (1987) 543-546.

• 124. On the Autoxidation of Aqueous Sodium Polysulfide.
  R. Steudel, G. Holdt, R. Nagorka, Z. Naturforsch. 41b (1986) 1519-1522.

• 123. Preparation, Crystal Structure and Vibrational Spectra of cyclo-Undecasulfur (S₁₁) and of cyclo-Tridecasulfur (S₁₃).
  R. Steudel, J. Steidel, T. Sandow, Z. Naturforsch. 41b (1986) 958-970.

• 122. Preparation and Crystal Structure of cis-Tetrachlorobis(cyclooctasulfurmonoxide)tin(IV).
  R. Steudel, J. Steidel, T. Sandow, Z. Naturforsch. 41b (1986) 951-957.

• 121. Ion-Pair Chromatographic Separation of Polythionates S_nO₆^2- with up to Thirteen Sulfur Atoms.
  R. Steudel, G. Holdt, J. Chromatogr. 361 (1986) 379-384.

• 120. Recent Developments in the Chemistry of Sulfur and Selenium.
  R. Steudel, Nova Acta Leopoldina 59 (1985) 231-246.

• 119. Hypervalent Defects in Amorphous Selenium and Similar Lone-Pair Semiconductors.
  R. Steudel, J. Non-Cryst. Solids 83 (1986) 63-79.

• 118. On the Colors of Jupiter's Satellite Io: Irradiation of Solid Sulfur at 77 K.
  R. Steudel, G. Holdt, A.T. Young, J. Geochem. Res. 91 (1986) 4971-4977.

• 117. Preparation of Selenium-rich Chalcogen Rings (Se₅S, Se₅S₂, Se₇) from Titanocenpentaselenide (Cp₂TiSe₅).
  R. Steudel, M. Papavassiliou, E.-M. Strauss, R. Laitinen, Angew. Chem. 98 (1986) 81-83; Angew. Chem. Int. Ed. Engl. 25 (1986) 99-101.

• 116. The Crystal Structure of the Hexachloro Antimonate Salts of (CH₃)₂SS(CH₃)⁺, (CH₃S)₃⁺ and (CH₃Se)₃⁺.
  R. Laitinen, R. Steudel, R. Weiß, J. Chem. Soc., Dalton Trans. 1986, 1095-1100.

• 115. Fundamental Vibrations of Six and Seven-Membered Selenium Sulphide Ring Molecules.
  R. Laitinen, R. Steudel, E.-M. Strauss, J. Chem. Soc., Dalton Trans. 1985, 1869-1875.

• 114. Qualitative and Quantitative HPLC Analysis of Chlorosulfanes S_nCl₂ (n = 1...30) after Derivatisation.
  R. Steudel, R. Strauss, D. Jensen, Chemikerzeitung 109 (1985) 349-350.

• 113.The Lower Oxides of Sulfur and Related Organic Sulfoxides.
  R. Steudel, Phosphorus & Sulfur 23 (1985) 33-64.

• 112. Preparation and Properties of cyclo-Nonasulfuroxide (S₉O) and of cyclo-Decasulfur-oxide (S₁₀O).
  R. Steudel, T. Sandow, J.Steidel, Z. Naturforsch. 40b (1985) 594-600.

• 111. Quantitative HPLC-Analysis and Thermodynamics of the Sulfur Melt.
  R. Steudel, R. Strauss, L. Koch, Angew. Chem. 97 (1985) 58-59; Angew. Chem. Int. Ed. Engl. 24 (1985) 59-60.

• 110. Homocyclic Selenium Molecules and Related Cations.
  R. Steudel, E.-M. Strauss, Adv. Inorg. Chem. Radiochem. 28 (1984) 135-166.

• 109. Convenient Preparation of Cyclo-eicosasulphur (S₂₀) from Bis(cyclopentadienyl)(pentasulphido)titanium(IV).
  R. Steudel, R. Strauss, J. Chem. Soc., Dalton Trans. 1984, 1775-1777.

• 108. Isolation of the First Six- and Seven-Membered Selenium-Sulfur Rings and Mechanisms of their Conversion into other Ring Sizes.
  R. Steudel, E.-M. Strauss, Angew. Chem. 96 (1984) 356-357; Angew. Chem. Int. Ed. Engl. 23 (1984) 362-363.

• 107. Elemental Sulfur and Related Homocyclic Compounds and Ions.
  R. Steudel in Sulfur: Its Significance for Chemistry, for the Geo-, Bio- and Cosmosphere and Technology, A. Müller, B. Krebs, (eds.), Elsevier Science Publ., Amsterdam 1984, p. 3-37.

• 106. Thermal Polymerization and Depolymerization Reactions of 10 Sulfur Allotropes (including Crystex and Crosor), Studied by HPLC and DSC.
  R. Steudel, S. Paßlack-Stephan, G. Holdt, Z. Anorg. Allg. Chem. 517 (1984) 7- 42.

• 105. X-ray Structural Analysis of Cyclodecasulfur (S₁₀) and of a Cyclohexasulfur-Cyclodecasulfur Molecular Addition Compound (S₆^.S₁₀).
  R. Steudel, J. Steidel, R. Reinhardt, Z. Naturforsch. 38b (1983) 1548-1556.

• 104. The Effect of S₆ and S₇ on the Polymerization of Liquid Sulfur.
  R. Steudel, Phosphorus & Sulfur 16 (1983) 251-255.

• 103. Chromatographic Separation of Sulfur Containing Heterocycles of Type (CH₂)_nS_m and Se_nS_8-n by HPLC.
  R. Steudel, E.-M. Strauss, Z. Naturforsch. 38b (1983) 719-725.

• 102. Barrier to Rotation about Sulfur-Sulfur Bonds in Homocyclic Sulfur Molecules.
  R. Steudel, Z. Naturforsch. 38b (1983) 543-545.

• 101. Molecular and Crystal Structure of cyclo-Undecasulfur S₁₁.
  J. Steidel, R. Steudel, J. Chem. Soc., Chem. Commun. 1982, 1312-1313.

• 100. Synthesis of S₁₁ and S₁₃.
  T. Sandow, J. Steidel, R. Steudel, Angew. Chem. 94 (1982) 782; Angew. Chem. Int. Ed. Engl. 10 (1982) 794.

• 99. Equilibria between Sulfur Rings in Carbon Disulfide Solution at Elevated Temperatures.
  R. Steudel, R. Strauss, Z. Naturforsch. 37b (1982) 1219-1220.

• 98. Homocyclic Sulfur Oxides (Review).
  R. Steudel, Comments Inorg. Chem. 1 (1982) 313-327.

• 97. Cyclic Selenium Sulfides (Review).
  R. Steudel, R. Laitinen, Topics Curr. Chem. 102 (1982) 177-197.

• 96. Homocyclic Sulfur Molecules (Review).
  R. Steudel, Topics Curr. Chem. 102 (1982) 149-176.

• 95. Separation of Cyclic Sulfur-Nitrogen Compounds by High-Pressure Liquid Chromatography.
  R. Steudel, D. Rosenbauer, J. Chromatogr. 216 (1981) 399-401.

• 94. Detection of Se₆, Se₇ and Se₈ in Selenium Solutions by High-Pressure Liquid Chromatography.
  R. Steudel, E.-M. Strauss, Z. Naturforsch. 36b (1981) 1085-1088.

• 93. Crystal Structure and Vibrational Analysis of cyclo-Triselenium Pentasulfide Prepared by Reaction of Titanocene Pentasulfide with Dichlorodiselane.
  R. Laitinen, N. Rautenberg, J. Steidel, R. Steudel, Z. Anorg. Allg. Chem. 486 (1982) 116-128.

• 92. On the Vibrational Assignment and Force Constants of Tetrasulfurtetraimide (SNH)₄.
  R. Steudel, J. Mol. Struct. 87 (1982) 97-104.

• 91. Vibrational Spectra and Force Constants of Tetrasulfurtetranitrid S₄N₄.
  R. Steudel, Z. Naturforsch. 36a (1981) 850-858.

• 90. Lower Sulfur Oxides,
  R. Steudel in: Gmelin Handbuch der Anorganischen Chemie, 8. Aufl., Schwefel, Ergänzungsbd. 3, Springer Verlag, Berlin 1980, p. 1-69.

• 89. Cyclo-Octasulfur Monoxide (S₈O).
  R. Steudel, T. Sandow, Inorg. Syntheses 21 (1982) 172.

• 88. Entropies and Heat Capacities of Gaseous Selenium Molecules Se_n (n = 5 - 12).
  R. Steudel, Z. Naturforsch. 36a (1981) 408-409.

• 87. Separation and Determination of Homocyclic Sulfur Molecules by High-Pressure Liquid Chromatography - Detection of New Sulfur Rings.
  R. Steudel, H.-J. Mäusle, D. Rosenbauer, H. Möckel, T. Freyholdt, Angew. Chem. 93 (1981) 402-404; Angew. Chem. Int. Ed. Engl. 20 (1981) 394-395.

• 86. X-ray Structural Analysis of Cyclododecasulfur (S₁₂) and of Cyclododecasulfur-1-Carbon disulfide (S₁₂^.CS₂).
  J. Steidel, R. Steudel, A. Kutoglu, Z. Anorg. Allg. Chem. 476 (1981) 171-178.

• 85. Molecular Composition of Liquid Sulfur, Part III: Quantitative Analysis in the Temperature Region 115-350°C.
  H.-J. Mäusle, R. Steudel, Z. Anorg. Allg. Chem. 478 (1981) 177-190.

• 84. Molecular Composition of Liquid Sulfur, Part II: Qualitative Analysis and Preparation of S₇, S₁₂, a-S₁₈ and S₂₀ from S₈.
  R. Steudel, H.-J. Mäusle, Z. Anorg. Allg. Chem. 478 (1981) 156-176.

• 83. Molecular Composition of Liquid Sulfur, Part I: Critical Review of the Literature.
  R. Steudel, Z. Anorg. Allg. Chem. 478 (1981) 139-155.

• 82. X-ray Structural Analysis of two Allotropes of Cycloheptasulfur (gamma- and delta-S₇).
  R. Steudel, J. Steidel, J. Pickardt, F. Schuster, R. Reinhardt, Z. Naturforsch. 35b (1980) 1378-1383.

• 81. The Crystal Structures and Raman Spectra of 2S₈^.SnI₄ and 2S_nSe_8-n^.SnI₄.
  R. Laitinen, J. Steidel, R. Steudel, Acta Chem. Scand. A34 (1980) 687-693.

• 80. Vibrational Spectroscopic Investigations of S_nSe_8-n Molecules.
  R. Laitinen, R. Steudel, J. Mol. Struct. 68 (1980) 19-32.

• 79. X-ray Structural Analysis and Vibrational Spectra of Trisulfurdinitrogendioxide, S₃N₂O₂.
  R. Steudel, J. Steidel, N. Rautenberg, Z. Naturforsch. 35b (1980) 792-796.

• 78. Liquid Sulfur - A Raw Material of Complicated Molecular Composition.
  R. Steudel, H.-J. Mäusle, Chemie in unserer Zeit 14 (1980) 73-80.

• 77. Reversible Isomerization of Cyclooctasulphur Monoxide: Preparation and X-ray Crystal Structure of S₈O^.SbCl₅.
  R. Steudel, T. Sandow, J. Steidel, J. Chem. Soc., Chem. Commun. 1980, 180-181.

• 76. Dimerization of S₆O to S₁₂O₂: Crystal Structure Analysis of S₁₂O₂^. 2SbCl₅^.3CS₂.
  R. Steudel, J. Steidel, J. Pickardt, Angew. Chem. 92 (1980) 313-314; Angew. Chem. Int. Ed. Engl. 19 (1980) 325.

• 75. Convenient Preparation of Cyclohexasulfur (S₆ ) from Dichlorodisulfane (S₂Cl₂) and Saltlike Iodides.
  H.-J. Mäusle, R. Steudel, Z. Anorg. Allg. Chem. 463 (1980) 27-31.

• 74. Structural Studies on the Sulfur-Selenium Binary System.
  R. Laitinen, L. Niinistö, R. Steudel, Acta Chem. Scand. 33A (1979) 737-747.

• 73. Molecular Composition of the Sulfur from Acidified Sodium Thiosulfate.
  R. Steudel, H.-J. Mäusle, Z. Anorg. Allg. Chem. 457 (1979) 165-173.

• 72. Detection of Large-Ring Sulfur Molecules in Liquid Sulfur: Simple Preparation of S₁₂, a-S₁₈ and S₂₀ from S₈.
  R. Steudel, H.-J. Mäusle, Angew. Chem. 91 (1979) 165-166; Angew. Chem. Int. Ed. Engl. 18 (1979) 152-153.

• 71. Convenient Preparation and Vibrational Spectra of Cyclodecasulfur S₁₀, and of the Adduct S₆^. S₁₀.
  R. Steudel, J. Steidel, T. Sandow, F. Schuster, Z. Naturforsch. 33b (1978) 1198-1200.

• 70. Redetermination of the Crystal and Molecular Structure of Cyclohexasulfur S₆.
  J. Steidel, J. Pickardt, R. Steudel, Z. Naturforsch. 33b (1978) 1554-1555.

• 69. Ring Contracion by Oxidation with Peroxyacid: Preparation of Cycloheptasulfur Dioxide (S₇O₂) from S₈.
  R. Steudel, T. Sandow, Angew. Chem. 90 (1978) 644-645; Angew. Chem. Int. Ed. Engl. 17 (1978) 611-612.

• 68. Vibrational Spectra of the Sulfur Rings S₈, ³⁴S₈, S₁₂ and S₁₂^. CS₂ and Thermodynamic Funtions of the Molecules S_n (n = 2-12).
  R. Steudel, H.-J. Mäusle, Z. Naturforsch. 33a (1978) 951-958.

• 67. Vibrational Spectra, Force Constants and Thermodynamic Functions of Cycloheptasulfur S₇.
  R. Steudel, F. Schuster, J. Mol. Struct. 44 (1978) 143.

• 66. Synthesis of Cyclohexasulfur Oxide, S₆O.
  R. Steudel, J. Steidel, Angew. Chem. 90 (1978) 134-135; Angew. Chem. Int. Ed. Engl. 17 (1978) 134-135.

• 65. Oxidation of Sulfur-Nitrogen Compounds to Sulfoxides by Peroxyacids.
  R. Steudel, F. Rose, Z. Naturforsch. 33b (1978) 122-123.

• 64. X-ray Structure Analysis of Cyclododecasulfur S₁₀.
  R. Reinhardt, R. Steudel, F. Schuster, Angew. Chem. 90 (1978) 55-56; Angew. Chem. Int. Ed. Engl. 17 (1978) 57-58.

• 63. Preparation of Cycloheptasulfur (S₇) from S₈.
  R. Steudel, H.-J. Mäusle, Angew. Chem. 90 (1978) 54-55; Angew. Chem. Int. Ed. Engl. 17 (1978) 56-57.

• 62. Fundamental Vibrations and Rotational Isomers of Polysulfide Anions, S_n^2- (n = 4 to 8).
  R. Steudel, F. Schuster, Z. Naturforsch. 32a (1977) 1313-1319.

• 61. Vibrational Spectra and Force Constants of Tetrasulfur Tetraimide, (SNH)₄ and (SND)₄.
  R. Steudel, F. Rose, Spectrochim. Acta 33A (1977) 979-986.

• 60. Preparation, Properties, X-ray Structure Analysis and Vibrational Spectra of Tris-dimethylamino-phosphine-oxide-2-heptasulfurimide [(CH₃)₂N]₃PO^.2S₇NH.
  R. Steudel, F. Rose, J. Pickardt, Z. Anorg. Allg. Chem. 434 (1977) 99-109 and 465 (1980) 239.

• 59. Bond-Bond Interaction in Sulfur Rings: Crystal and Molecular Structure of Cycloheptasulfur Oxide, S₇O.
  R. Steudel, R. Reinhardt, T. Sandow, Angew. Chem. 89 (1977) 757-758; Angew. Chem. Int. Ed. Engl. 16 (1977) 716.

• 58. Crystal and Molecular Structure of Cycloheptasulfur (delta-S₇).
  R. Steudel, R. Reinhardt, F. Schuster, Angew. Chem. 89 (1977) 756; Angew. Chem. Int. Ed. Engl. 16 (1977) 715.

• 57. Crystal and Molecular Structure of Bis(4-chlorophenyl)trisulfane 2-Oxide (4-ClC₆H₄)₂S₃O.
  R. Steudel, P. Luger, H. Bradaczek, Chem. Ber. 110 (1977) 3553-3560 (now: Eur. J. Inorg. Chem.).

• 56. Synthesis, Vibrational Spectra and X-Ray Structure Analysis of Trifluoro and Trichloroacetyl Trisulfurtrinitride, CX₃CONS₃N₂.
  R. Steudel, R. Reinhardt, H. Bradaczek, Z. Naturforsch. 32b (1977) 488-494.

• 55. Vibrational Spectra and Force Constants of Heptasulfur Imide.
  R. Steudel, J. Phys. Chem. 81 (1977) 343-349.

• 54. Detection of S₆ and S₇ in Molten Cyclooctasulfur.
  R. Steudel, H.-J. Mäusle, Angew. Chem. 89 (1977) 114-115; Angew. Chem. Int. Ed. Engl. 16 (1977) 112-113.

• 53. Synthesis of Cycloheptasulfur Oxide, S₇O.
  R. Steudel, Torsten Sandow, Angew. Chem. 88 (1976) 854-855; Angew. Chem. Int. Ed. Engl. 15 (1976) 772-773.

• 52. Sulfane Oxides R₂S_nO and R₂S_nO₂ (n = 3, 4) by Oxidation of Organic Trisulfanes and Tetrasulfanes.
  R. Steudel, Jörg Latte, Chem. Ber. 110 (1977) 423-429 (now: Eur. J. Inorg. Chem.).

• 51. X-Ray Structural Analysis of Ammonium Tetrasulfur-pentanidride-oxide, NH₄[S₄N₅O].
  Peter Luger, Hans Bradaczek, R. Steudel, Chem. Ber. 109 (1976) 3441-3445 (now: Eur. J. Inorg. Chem.).

• 50. Vibrational Assignment and Force Constants of the Tetrasulfide Ion, S₄^2-.
  R. Steudel, J. Phys. Chem. 80 (1976) 1516.

• 49. Redetermination of the Crystal and Molecular Structure of Heptasulfur Imide, S₇NH.
  H.-J. Hecht, R. Reinhardt, R. Steudel, H. Bradaczek, Z. Anorg. Allg. Chem. 426 (1976) 43-48.

• 48. X-Ray Structural Analysis of Cyclooctasulfuroxide S₈O.
  P. Luger, H. Bradaczek, R. Steudel, M. Rebsch, Chem. Ber. 109 (1976) 180-184 (now: Eur. J. Inorg. Chem.).

• 47. Arsenic, Antimony, Bismuth (and their compounds).
  R. Steudel, P.W. Schenk, in Handbuch der Präparativen Anorganischen Chemie, Vol. 1 (G. Brauer, ed.), Enke-Verlag, Stuttgart 1975, p. 567- 604.

• 46. Nitrogen (and its compounds).
  R. Steudel, Peter W. Schenk, in Handbuch der Präparativen Anorganischen Chemie, Vol. 1, (G. Brauer, ed.), Enke-Verlag, Stuttgart 1975, p. 442-504.
  

• 45. Preparative Methods.
  P.W. Schenk, R. Steudel, G. Brauer, in Handbuch der Präparativen Anorganischen Chemie, Vol. 1 (G. Brauer, ed.), Enke-Verlag, Stuttgart 1975, p. 1-127.

• 44. Vibrational Assignment and Force Constants of Cyclooctaselenium, Se₈ and of the Cyclotetraselenium Cation, Se₄²⁺.
  R. Steudel, Z. Naturforsch. 30a (1975) 1481-1484.

• 43. Synthesis and Properties of Bis(heptasulfurimido) Sulfoxide (S₇N)₂SO.
  R. Steudel, Fritz Rose, Z. Naturforsch. 30b (1975) 810-811.

• 42. Properties of Sulfur-Sulfur Bonds.
  R. Steudel, Angew. Chem. 87 (1975) 683-692; Angew. Chem. Int. Ed. Engl. 14 (1975) 655-664.

• 41. Determination of SS Bond Distances from Vibrational Spectra.
  R. Steudel, Z. Naturforsch. 30b (1975) 281-282.

• 40. Comparison of Vibrational Spectra, Force Contants and Bond Properties of S₆, S₇, S₈, S₈O and S₁₂.
  R. Steudel, Spectrochim. Acta 31A (1975) 1065-1073.

• 39. The Reaction of Thionylchloride with Polysulfanes: Preparation and Properties of S₈O.
  R. Steudel, Michael Rebsch, Z. Anorg. Allg. Chem. 413 (1975) 252-260.

• 38. Vibrational Assignment and Force Constants of S₁₂.
  R. Steudel, D.F. Eggers, Spectrochim. Acta 31A (1975) 879-884.

• 37. Vibrational Assignment and Force Constants of S₈O.
  R. Steudel, D.F. Eggers, Spectrochim. Acta 31A (1975) 871-877.

• 36. Cyclooctasulfur Oxide from Cyclooctasulfur.
  R. Steudel, J. Latte, Angew. Chem. 86 (1974) 648; Angew. Chem. Int. Ed. Engl. 13 (1974) 603.

• 35. Infrared and Raman Spectra of Cyclododecasulfur, S₁₂.
  R. Steudel, M. Rebsch, J. Mol. Spectrosc. 51 (1974) 189-193.

• 34. Infrared and Raman Spectra of Cyclooctasulfur Oxide, S₈O.
  R. Steudel, M. Rebsch, J. Mol. Spectrosc. 51 (1974) 334-340.

• 33. Photoelectron Spectrum of Disulfur Monoxide: SSO versus OSO.
  H. Bock, B. Solouki, P. Rosmus, R. Steudel, Angew. Chem. 85 (1973) 987-988; Angew. Chem. Int. Ed. Engl. 12 (1973) 933.

• 32. Crystal and Molecular Structure of Cyclooctasulfur Oxide, S₈O.
  R. Steudel, P. Luger, H. Bradaczek, M. Rebsch, Angew. Chem. 85 (1973) 452-453; Angew. Chem. Int. Ed. Engl. 12 (1973) 423.

• 31. Crystal and Molecular Structure of NH₄[S₄N₅O] - a New Sulfur Nitrogen Cage Molecule.
  R. Steudel, P. Luger, H. Bradaczek, Angew. Chem. 85 (1973) 307-308; Angew. Chem. Int. Ed. Engl. 12 (1973) 316.

• 30. Existence of Branched Sulfur Chains at Low Temperatures.
  R. Steudel, Z. Naturforsch. 27b (1972) 469-470.

• 29. Synthesis of Cyclooctasulfur Oxide, S₈O.
  R. Steudel, M. Rebsch, Angew. Chem. 84 (1972) 344; Angew. Chem. Int. Ed. Engl. 11 (1972) 302; Z. Anorg. Allg. Chem. 413 (1975) 252.

• 28. Bond Properties of Groups SO and SeO in Thionyl and Seleninyl Compounds.
  R. Steudel, Z. Naturforsch. 26b (1971) 750-756.

• 27. Impact of Substituents on the SeO Stretching Vibration in Seleninyl Compounds X-SeO-Y.
  R. Steudel, Z. Naturforsch. 25b (1970) 645-646.

• 26. The SO Stretching Vibration in Thionyl Compounds.
  R. Steudel, Z. Naturforsch. 25b (1970) 156-165.

• 25. Salts of the Tetrasulfur Tetranitride Imide Oxide, HS₄N₅O.
  R. Steudel, Z. Naturforsch. 24b (1969) 934-935.

• 24. Preparation of New Disulfane and Trisulfane Oxides.
  R. Steudel, Gisela Scheller, Z. Naturforsch. 24b (1969) 351-352.

• 23. Synthesis of Thionylchloridebromide, SOClBr.
  R. Steudel, Dieter Lautenbach, Z. Naturforsch. 24b (1969) 350-351.

• 22. The Combustion of Sulfur.
  R. Steudel, Bild der Wissenschaft 1969, 206.

• 21. Isolation of the Trichloromethyl Radical.
  R. Steudel, Z. Anorg. Allg. Chem. 360 (1968) 143-150.

• 20. The Trichloromethyl Radical as a Reaction Intermediate.
  R. Steudel, Z. Naturforsch. 23b (1968) 1163-1171.

• 19. Oxides of Sulphur.
  P.W. Schenk, R. Steudel in Inorganic Sulphur Chemistry, G. Nickless (ed.),
  Chapt. 11, Elsevier Publ., Amsterdam, 1968, p. 367-418.

• 18. Preparation and Properties of Carbon Monoselenide.
  R. Steudel, Z. Anorg. Allg. Chem. 361 (1968) 195-198.

• 17. Matrix Isolation of the Trichloromethyl Radical.
  R. Steudel, Tetrahedron Lett. 47 (1967) 4699-4701.

• 16. On the Isolation of the Dichlorocarbene.
  R. Steudel, Tetrahedron Lett. 19 (1967) 1845-1847.

• 15. Preparation and Properties of Carbon Monosulfide.
  R. Steudel, Z. Anorg. Allg. Chem. 361 (1968) 180-184.

• 14. Preparation of Compounds with Branched Sulfur Chains.
  P.W. Schenk, R. Steudel, R. Ludwig, J. Bilal, Anales du Genie Chimique (Toulouse) T. III (1967) 82-86.

• 13. Preparation of Bis-2-naphthyltrisulfane-2-oxide and the Structure of Polysulfuroxides.
  R. Steudel, P.W. Schenk, J. Bilal, Z. Anorg. Allg.Chem. 353 (1967) 250-258.

• 12. Reactions of Carbon Monosulfide and Monoselenide with Chalcogens and Halogens.
  R. Steudel, Angew. Chem. 79 (1967) 649-650; Angew. Chem. Int. Ed. Engl. 6 (1967) 635.

• 11. Matrix Isolation and Properties of Carbon Monosulfide.
  R. Steudel, Z. Naturforsch. 21b (1966) 1106.

• 10. Reaction of Sulfur Trioxide with Carbon Disulfide.
  R. Steudel, Z. Anorg. Allg. Chem. 346 (1966) 255.

• 9. Synthesis of Bis(2-naphthyl) Trisulfane 2-Oxide, (C₁₀H₇)₂S₃O.
  P.W. Schenk, R. Steudel, J. Bilal, Angew. Chem. 78 (1966), 717; Angew. Chem. Int. Ed. Engl. 5 (1966) 673.

• 8. Adducts of Disulfur Monoxide (with Amines).
  P.W. Schenk, R. Steudel, Z. Anorg. Allg. Chem. 342 (1966) 263.

• 7. Preparation of Pure Disulfur Monoxide and its Polymerization.
  P.W. Schenk, R. Steudel, Z. Anorg. Allg. Chem. 342 (1966) 253.

• 6. Synthesis of Sulfane Oxides.
  P.W. Schenk, W. Kretschmer, R. Ludwig, R. Steudel, M. Töpert, Angew. Chem. 77 (1965) 1089.

• 5. Recent Investigations on Lower Sulfur Oxides.
  P.W. Schenk, R. Steudel, Angew. Chem. 77 (1965) 437; Angew. Chem. Int. Ed. Engl. 4 (1965) 402.

• 4. Enthalpy of Formation of Disulfur Monoxide.
  R. Steudel, P.W. Schenk, Z. Phys. Chem. (Neue Folge) 43 (1964) 33.

• 3. New Formation Reactions for Disulfur Monoxide.
  P.W. Schenk, R.Steudel, M. Töpert, Z. Naturforsch. 19b (1964) 535-536.

• 2. Preparation of Pure Disulfur Monoxide.
  P.W. Schenk, R. Steudel, Angew. Chem. 76 (1964) 97; Angew. Chem. Int. Ed. Engl. 3 (1964) 61.

• 1. Adducts of Disulfur Monoxide.
  P.W. Schenk, R. Steudel, Angew. Chem. 75 (1963) 793; Angew. Chem. Int. Ed. Engl. 2 (1963) 685.