Synthesis and Structures of [LCu(I)(SSi^<i>i</i>Pr₃)] (L = triphos, carbene) and Related Compounds

The mononuclear Cu­(I) complexes [LCuI­(SSiiPr3)] (L = 1,1,1-tris­(diphenylphosphinomethyl)­ethane (triphos), 1,3-bis­(2,4,6-trimethylphenyl)­imidazol-2-ylidene (IMes)) have been prepared by ligand displacement from [LCuICl] with iPr3SiS–. Both compounds are colorless, diamagnetic species and have been characterized structurally by X-ray crystallography. The compounds [(IMes)­Cu­(η1κS-SC­(O)­CH3)] and [(triphos)­Cu­(η1κS-SC­(S)­OCH3)] have been prepared in the context of synthesis aimed at [LCu­(η1κS-SCOS)] and [LCu­(η1κS-SCS2)] complexes, which are intended as synthons toward an analogue of the Mo­(μ-OSCO)Cu intermediate proposed as occurring in the catalytic cycle of carbon monoxide dehydrogenase (CODH).