TETRAKIS(TRIPHENYLSTIBINE)GOLD(I) PERCHLORATE

[Au(C18H15Sb)4]ClO4, M(r) = 1708.6, rhombohedral, R3BAR, a = 14.5860 C = 52.351 (4) angstrom (hexagonal axes), V = 9646 angstrom3, Z = 6, D(x) = 1.765 Mg m-3, lambda(Mo K-alpha) = 0.71069 angstrom, mu = 4.0 mm-1, F(000) = 4944, T = 293 K, R = 0.038 for 3404 reflections. The Au atom and one Sb atom lie on the crystallographic threefold axis 2/3, 1/3, z; the coordination at the Au is almost exactly tetrahedral, with Au-Sb bond lengths of 2.658 (2) and 2.656 (2) angstrom, and Sb-Au-Sb bond angles of 108.8 (1) and 110.1 (1)-degrees. The Cl atoms of the two independent perchlorate anions lie on special positions 1/3, 2/3, 1/6 and 0,0,0 respectively; the site symmetry 3BAR is impossible for ordered perchlorate, and the O atoms are severely disordered.