TRIPHENYLPHOSPHINE - A REDETERMINATION

C18H15P, M(r) = 262.3, monoclinic, P2(1)/a, a = 11.329 (3), b = 14.915 (4), c = 8.440 (1) angstrom, beta = 92.12 (2)-degrees, V = 1 425 (1) angstrom 3, Z = 4, D(x) = 1.22 g cm-1, Mo K-alpha, lambdaBAR = 0.71069 angstrom, mu = 1.70 cm-1, T = 200 K, F(000) = 552, R = 0.038 for 2135 unique observed reflections. The crystal structure of the title compound has been redetermined, to improved precision, using diffractometer data at reduced temperature. The average P-C distance is 1.831 angstrom, and C-P-C angle is 102.8-degrees (e.s.d.'s on individual parameters being 0.002 angstrom and 0.1-degrees, respectively). The improved precision allows identification of several distortions, such as C-C bond-length variations, in the phenyl rings.