Reactions of [Os3(CO)10(μ-H)2] and [Os3(CO)8{µ3-Ph2PCH2P(Ph)C6H4}(μ-H)] with pymS‒SnPh3 (pymS = pyrimidine-2-thiolate): Synthesis and Structure of Triosmium Clusters Containing pymS Ligand

Abstract

Reactivity of pymS‒SnPh3 (pymS = pyrimidine-2-thiolate) towards two unsaturated triosmium clusters [Os3(CO)10(μ-H)2] and [Os3(CO)8{µ3-Ph2PCH2P(Ph)C6H4}(μ-H)] are investigated. Reaction of pymS‒SnPh3 with [Os3(CO)10(μ-H)2] affords [Os3(CO)10(µ-pymS)(µ-H)] (1) and [Os3(CO)9(µ3-pymS)(µ-H)] (2), while with [Os3(CO)8{µ3-Ph2PCH2P(Ph)C6H4}(μ-H)] leads to the isolation of only [Os3(CO)8(μ-pymS)(μ-H)(μ-dppm)] (3). In both reactions, the products are formed via incorporation of the thiolate part (pymS) of pymS‒SnPh3 into the parent clusters through Sn‒S bond cleavage. Clusters 1–3 have been characterized by a combination of analytical and spectroscopic data together with single crystal X-ray diffraction analysis. Reactions of pymS‒SnPh3 with two unsaturated triosmium clusters have been investigated which resulted in the isolation and characterization of three triosmium clusters containing a pymS ligand.