Chlorido{[2-(dicyclohexylphosphanoyl)ethyl]bis[2-(dicyclohexylphosphanyl)ethyl]phosphane}platinum(II) chloride dichloromethane hemisolvate tetrahydrate

The title compound, [PtCl(C42H78OP4)]Cl center dot 0.5CH(2)Cl(2 center dot)4H(2)O, crystallizes as a contact ion-pair with two close intermolecular C-H center dot center dot center dot Cl- contacts between CH acidic alpha H atoms of the phosphane ligand and the chloride anion. A chloride ligand together with three coordinating P ligand atoms create a slightly distorted square-planar coordination environment around the Pt-II center. An intermolecular water O-H center dot center dot center dot Cl- and water O-H center dot center dot center dot OP hydrogen-bond network completes the coordination around the anion. In addition, a disordered CH2Cl2 solvent molecule cocrystallized within a hydrophobic cavity spanned by the dicyclohexylphosphane ligands.