Bis[O-isopropyl (4-eth­oxy­phen­yl)dithio­phospho­nato-κ(2) S,S′]lead(II)

The title compound, [Pb(C(11)H(16)O(2)PS(2))(2)], is a neutral four-coordinate mononuclear complex with a distorted square-pyramidal geometry of the PbS(4) core. The apical Pb(II) atom of each pyramid is 1.33059 (3) Å above the basal S(4) plane. The metal atom is surrounded by two chelating dithio­phospho­nate ligands binding through the S-donor atoms. The ligands are anisobidentate as the pyramid is comprised of Pb—S bond lengths that vary substanti­ally [2.6999 (7), 2.7128 (6), 2.8877 (7) and 2.9472 (7) Å], clearly indicating two short and two longer bond lengths. The P—S bond lengths are also paired as shorter [1.9959 (9) and 1.9877 (8) Å] and slightly longer [2.0115 (9) and 2.0245 (9) Å], indicating an anisobidentate nature of the ligand whereby the shorter P—S bond has more double-bond character than the other. The S—Pb—S (chelating) bond angles range from 71.841 (18) to 72.692 (19)°, whilst the Pb—S—P bond angles range from 84.70 (3) to 90.51 (3)°.