New sulfur derivatives of carboranes and metallacarboranes

A series of new closo- and nido-carborane based thioethers with exo-polyhedral carbon-sulfur bond 1-X(CH2)(n)S-1,2-C2B10H11 (X = COOH, N-3, CH(NH2)COOH) and [7-X(CH2)(n)S-7,8-C2B9H11](-) (X = COOH, N-3, NH2, CH(NH2)COOH) was prepared by alkylation of 1-mercapto-1,2-carborane. Dialkylsulfonium derivatives of nido-carborane 9-R(Me)S-7,8-C2B9H11 and 10-R(Me)S-7,8-C2B9H11 with exo-polyhedral boron-sulfur bond were prepared by alkylation of the corresponding methyl-carboranyl thioether. Isomeric MeS derivatives of transition metal bis(dicarbollide) complexes [X,Y-(MeS)(2)-3,3'-M(1,2-C2B9H10)(2)](-) were prepared starting from the corresponding methylcarboranyl thioethers. [GRAPHICS] .