Halogenation and alkylation at a MoIII2(μ-S) site. Crystal structure of the metal - sulfenyl halide complex [Mo2(η5-C5 Me5)2(μ-SMe)2(μ-SI) (CO)2]I5

Abstract : Halogens I2, Br2, and Cl2 react with the neutral bridging sulfur site within the Mo2(SMe)2(S) core of the complex [Mo2(η5-C5 Me5)2(μ-S)(μ-SMe)2(CO)2](1) to give covalent halosulfide ligands. The stability of the halosulfide complexes decreases in the order iodine > bromine ≫ chlorine. The stable iodo derivative [Mo2(η5-C5 Me5)2(μ-SMe)2(μ-SI) (CO)2]I5 (2) is the first molydenum(III) compound containing an iodosulfide bridge to be crystallographically characterized.