Hydrido-sulfido-bridged triangular Os₃cluster compounds with different phosphine ligand substitution patterns

Abstract

In the course of our studies of trinuclear osmium cluster complexes with bridging sulfido and hydrido ligands, the new compounds Os3(μ‐H)(μ‐SR)(CO)9(PHCy2) (Cy = cyclo­hexyl) with R = phenyl, (I) (nona­carbonyl‐1κ3C,2κ3C,3κ3C‐di­cyclo­hexyl­phosphine‐3κP‐μ‐hydrido‐1:2κ2H‐μ‐phenyl­thio‐1:2κ2S‐triangulo‐triosmium), [Os3H(C6H5S)(C12H23P)(CO)9], and R = naphthyl, (II) [nona­carbonyl‐1κ3C,2κ2C,3κ4C‐di­cyclo­hexyl­phosphine‐2κP‐μ‐hydrido‐1:2κ2H‐μ‐(2‐naphthyl­thio)‐1:2κ2S‐triangulo‐triosmium], [Os3H(C10H7S)(C12H23P)(CO)9], were prepared. We report on these two phosphine‐substituted complexes, which exhibit perceptible changes of the Os—Os bond parameters due to the ligand‐substitution pattern.