CRYSTAL AND MOLECULAR-STRUCTURE OF P,P-DIPHENYL-N-METHYL-THIOPHOSPHINYLTHIOFORMAMIDE

The crystal structure of the title compound [Ph(2)P(S)C(S)N(H)Me], C14 H14NPS2, has been determined at room temperature. The yellow crystals are monoclinic, space group P2(1)/n with unit cell dimensions a = 12.9 03(1) Angstrom, b = 7.9719(7) Angstrom, c = 14.493(1) Angstrom, beta = 96.380(7)degrees, Z = 4 and D-x = 1.306 Mg m(-3). The structure was s olved by direct-methods and refined by a full-matrix least-squares pro cedure to final R = 0.046 using 1853 reflections. The molecule feature s a central P(S)C(S)N chromophore with important parameters: P-S 1.959 (1) Angstrom, P-C 1.847(4) Angstrom, C-S 1.642(4) Angstrom, and C-N 1. 326(5) Angstrom; the conformation about the C = N bond is Z.