CHLORO[DIPHENYL(DIPHENYLPHOSPHINO-KAPPA-P-METHYL)PHOSPHINE SELENIDE]GOLD(I) DICHLOROMETHANE HEMISOLVATE AT 178-K

[AuCl(C25H22P2Se)].1/2 CH2Cl2, M(r) = 738.2, monoclinic, P2(1)/c, a = 9.790 (3), b = 18.050 (4), c = 15.118 (4) angstrom, beta = 105.86 (3)-degrees, V = 2570 angstrom, Z = 4, D(x) = 1.91 Mg m-3, lambda(Mo Kalpha) = 0.71069 angstrom, mu = 7.49 mm-1, F(000) = 1412, T = 178 K. The structure was refined to R = 0.046 for 3339 unique observed reflections. The title compound crystallizes with two disordered dichloromethane molecules per unit cell. The coordination geometry at Au is linear. A distorted tetrahedral geometry is observed at P. The P substituents, Se and AuICl, display a cis configuration with a short non-bonded Au...Se contact of 3.277 angstrom.