Incorporation of Three Phenylacetylene Molecules into an RhMo₂S₄ Trinuclear Sulfido Cluster Core, Forming Bridging Metallathiacyclobutene and Dithiolene Moieties

The trinuclear sulfido cluster [{Rh(PPh3)2}(μ3-S)(μ2-S)3{Mo(S2CNEt2)}2(μ2-Cl)] (2a) reacted readily with three PhC⋮CH molecules to afford [{Rh(SCPhCH)Cl(PPh3)}{Mo(SCPhCH)(S2CNEt2)}{Mo(S2C2HPh)(S2CNEt2)}], the structure of which, as well as that of the PMePh2 analogue of 2a, have been determined by X-ray analyses.