Preparation of Organic Polysulfanes R2Sn (n = 5, 7, 8, 9) from Sulfenyl Chlorides, RSCl, and Transition Metal Polysulfido Complexes
✍ Scribed by Ralf Steudel; Karin Hassenberg; Vera Münchow; Oliver Schumann; Joachim Pickardt
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 393 KB
- Volume
- 2000
- Category
- Article
- ISSN
- 1434-1948
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✦ Synopsis
The preparation of seven novel organic polysulfanes is reported. Bis(n-octyl)heptasulfane R 2 S 7 1 is formed upon reaction of RSCl with [Cp 2 TiS 5 ], while the corresponding nonasulfane R 2 S 9 2 is obtained by reaction of RSSCl with [Cp 2 TiS 5 ]. The bis(n-octyl)pentasulfane R 2 S 5 3 is obtained from RSCl and [(CpЈ 2 TiCl) 2 S 3 ] by transfer of the S 3 ligand at 20 °C. The new alkyl polysulfanes 1-3 have been obtained in quantitative yields. They are liquids at 20 °C, having freezing points below -50 °C, but do not form mesogenic phases. Reactions of [Cp 2 TiS 5 ] with 2-naphthyl-and 4-chlorophenyl sulfenyl chloride furnish the corresponding heptasulfanes 4 and 5, respectively, which are solids at 20 °C. 1,2-Benzodisulfenyl chloride C 6 H 4 (SCl) 2 reacts with [(CpЈ 2 TiCl) 2 S 3 ] to give the