Abstract
Abstract Titanocene pentasulfide reacts with Ph3CCl and CCl3SCl to give (Ph3C)2S5 and (CCl3)2S7, respectively, the molecular structures of which show helical CSnC backbones. (Ph3C)2S6 and (CN)2S9 possess non-helical structures. C2H4(SCl)2, C6H4(SCl)2, C6H4(SSCl)2 and CH3C6H3(SCl)2 react with Cp2TiS5 to give the corresponding sulfur-rich heterocycles with up to nine sulfur atoms. Dicyclopentadiene trisulfane is used to prepare the dicyclopentadiene tetra-, penta-, hexa- and octa-sulfanes by (a) derivatization to SCl or SH compounds followed by sulfur transfer reactions using Cp2TiS5, (Cp′2ClTi)2S3 or S2Cl2 as reagents. Several cyclic, bicyclic and tricyclic organosulfur heterocycles are obtained from Cp4Ti2C2S4 or from Cp2TiS2C3H6 by reactions with SCl2, S2Cl2, C2H4(SCl)2, COCl2 or C6H4(SCl)2.
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