Palladium(II) Chloride Interaction with Chelating BIS(Phosphine Sulfides). Effect of the Ligand Structure on the Complex Geometry

Abstract

Interaction of PdCl₂ in chloroform with bis(phosphine sulfides) Ph₂P(S)?X?P(S)Ph₂ (X?CH₂, C(CH₃)₂, CH₂CH₂, NH, S, and SCH₂S) has been studied. Mechanism of the reaction has been found to vary dramatically with the identity of X. The structures of the resultant complexes were evaluated by UV and IR spectroscopy. Crystal structures were were determined by X-ray diffraction for two of the compounds (A: Ph₂P(S)?(CH₂)₂?P(S)Ph₂]PdCl₂ · CH₃CN, P2₁/n, Z = 4, a = 10.104(2), b = 20.939(4), c = 14.034(3) Å, γ = 102.54(2)· B: Ph₂P(S)?N?P(S)Ph₂]₂Pd · 2CHCl₃, Pl, Z = 1, a = 9.539(1), b = 12.333(3), c = 12.866 Å, α = 111.83(2)°, β = 96.70(3)° γ = 99.84(3)°).