Binuclear complexes of rhodium (I) bridged by 1,2-dicarba-closo-dodecaborane-1,2-dichalcogenolato ligands: molecular structures of the complexes [Rh2(COD)2(μ2-E2C2(B10H10))] [E = S, Se] and [Rh2(CO)4(μ2-S2C2(B10H10))]

The complexes [Rh2(COD)2(μ2-E2C2(B10H10))] [E = S (2a), Se (2b)] and [Rh2(CO)4(μ2-E2C2B10H10)] [E = S (3a), Se (3b)] have been synthesized from the reactions of [Rh(COD)Cl]2 and [Rh(CO)2Cl]2 with Li2E2C2(B10H10) (E = S, Se). The molecular structures of 2a, 2b and 3a have been determined by X-ray crystallography.