μ-Oxalato-bis[bis(triphenylphosphine)copper(I)] dichloromethane disolvateATR dedicates this paper to the honor of Professor S. Peter Tanner for rekindling a love of inorganic chemistry.

The dinuclear molecule of the title compound, [Cu2(C2O4)(C18H15P)4]·2CH2Cl2, lies across an inversion center with a strictly planar bridging oxalate ligand coordinating two CuI ions via two pairs of O atoms. Two triphenylphosphine ligands also coordinate each symmetry-related CuI ion, resulting in a distorted tetrahedral geometry [O—Cu—O = 80.57 (5)° and P—Cu—P = 125.72 (2)°]. In the crystal, there are two dichloromethane solvent molecules for each dinuclear complex.