TETRA-N-PROPYL-1,2-DITHIOXODI-LAMBDA-5-PHOSPHANE

C12H28P2S2, M(r) = 298.42, monoclinic, P2(1)/n, a = 6.491 (2), b = 10. 152 (1), c = 13.358 (1) angstrom, beta = 100.74 (1)degrees, V = 864.8 (4) angstrom3, Z = 2, D(m) = 1.135 (4), D(x) = 1. 146 g cm-3, lambda(M o Kalpha) = 0.71069 angstrom, mu = 4.58 cm-1, F(000) = 324, T = 296 K, R = 0.033 for 1137 unique reflections. The molecule lies on a crystal lographic centre of symmetry. The geometry around the P atom is slight ly distorted tetrahedral with the three angles involving the S atom la rger than the other three angles. This distortion can be attributed to the bulk of the S atom and P=S being a double bond. Both the P-C(1)-C (2)-C(3) chain and P-C(4)-C(5)-C(6) chain are essentially planar.