Addition Reactions of the Novel Mononuclear Dithio-o-carboranylcobalt(III) Complex (η⁵-C₅H₅)Co(η²-S₂C₂B₁₀H₁₀)

The mononuclear 16-electron dithio- o -carboranylcobalt(III) complex CpCo(S 2 C 2 B 10 H 10 ) ( 2 ) was obtained by the reaction of CpCo(CO)I 2 with dilithium dithio- o -carborane, Li 2 [S 2 C 2 B 10 H 10 ] ( 1 ). Complex 2 reacts with a variety of substrates such as CpCo(C 2 H 2 ) 2, alkynes, and a diazoalkane, generating a new class of dithio- o -carboranylcobalt(III) compounds incorporating a CpCo unit and alkene and alkylidene ligands.