Reactivity of CpCo 16e Half-Sandwich Complexes Containing a Chelating 1,2-Dicarba-closo-dodecaborane-1,2-dichalcogenolate Ligand toward Phenylacetylene

The reaction of the 16e half-sandwich complex CpCo[S2C2B10H10] (1S) with phenylacetylene at ambient temperature led to 2S, 3S, and 4S. In 3S the alkyne is twofold inserted into one of the Co−S bond...