Crystal structures of (Z)-(ethene-1,2-diyl)bis(diphenylphosphine sulfide) and its complex with PtII dichloride

Abstract

The crystal structures of (Z)-(ethene-1,2-diyl)bis(diphenylphosphine sulfide), C26H22P2S2 (I), along with its complex with PtII dichloride, dichlorido[(Z)-(ethene-1,2-diyl)bis(diphenylphosphine sulfide)-κ2 S,S′]platinum(II), [PtCl2(C26H22P2S2)] (II), are described here. Compound I features P=S bond lengths of 1.9571 (15) and 1.9529 (15) Å, with a torsion angle of 166.24 (7)° between the two phosphine sulfide groups. The crystal of compound I features both intramolecular C—H...S hydrogen bonds and π–π interactions. Molecules of compound I are held together with intermolecular π–π and C—H...π interactions to form chains that run parallel to the z-axis. The intermolecular C—H...π interaction has a H...Cg distance of 2.63 Å, a D...Cg distance of 3.573 (5) Å and a D—H...Cg angle of 171° (where Cg refers to the centroid of one of the phenyl rings). These chains are linked by relatively long C—H...S hydrogen bonds with D...A distances of 3.367 (4) and 3.394 (4) Å with D—H...A angles of 113 and 115°. Compound II features Pt—Cl and Pt—S bond lengths of 2.3226 (19) and 2.2712 (19) Å, with a P=S bond length of 2.012 (3) Å. The PtII center adopts a square-planar geometry, with Cl—Pt—Cl and S—Pt—S bond angles of 90.34 (10) and 97.19 (10)°, respectively. Molecules of compound II are linked in the crystal by intermolecular C—H...Cl and C—H...S hydrogen bonds.