Abstract
Abstract The earlier and more recent results obtained in the author's laboratory in the field of the C4 and C3 thioxocarbon dianions are presented. Several preparative routes, some of the interesting chemical reactions as well as relevant spectrocopic data of the dianion tetrathiosquarate C4S4 2- are summarized and compared with those of other uniformly substituted C4 pseudo-oxocarbon dianions. Concerning the C3 series, syntheses of novel sulfur-bridged three-membered ring compounds such as dication sulfides, thiocarbonylylides and dianion sulfides are described. Finally, the first synthesis of the aromatic dianion trithiodeltate C3S3 2- is reported, together with some spectroscopic data and an X-ray crystal structure determination.
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