The C4S2 donor set in the title compound, [Pt(C12H8){(C2H5)2S}]2, defines a distorted square-planar geometry about the two PtII atoms, with very small deviations from planarity. The bidentate nature of the biphenyl dianionic ligand results in C—Pt—C bond angles of 80.9 (2) and 81.2 (2)°; the S—Pt—S bond angles are 78.08 (5) and 78.09 (5)°. The average Pt—C bond length is 2.023 Å [range 2.016 (5)–2.028 (6) Å] and the average of Pt—S bond length is 2.3790 Å [range 2.3742 (14)–2.3837 (14) Å].
