Synthesis and characterization of complexes with Pt3(µ3-SnX3) groups including the first SnF3– complex; possible models for heterogeneous Pt–Sn catalysts

Abstract

Novel complexes containing Pt₃(µ₃-SnX₃) groups have been prepared by reaction of [Pt₃(µ₃-CO)(µ-dppm)₃][PF₆]₂(dpmm = Ph₂PCH₂PPh₂) with organotin hydrides or with SnX₃^– and are of intrest as possible models for heterogeneous Pt–Sn/support catalysts; the structures of [Pt₃{µ₃-SnMe₂(PO₂F₂)}(µ-dppm)₃]⁺ and disordered {[Pt₃(µ₃-SnF₃)(µ₃-CO)(µ-dppm)₃][PF₆]}_0.75[Pt₃(µ₃-SnF₃)(µ₃-Cl)(µ-dppm)₃]_0.25 are determined, the latter being the first SnF₃^– complex to be crystallographically characterized.