| Abstract |
Heterobimetallic complexes of the form [M(eta (5)-C5H5)(2)(mu -SR)(2)CuLn][BF4] where M = Mo, R = Ph, L = PPh3, n = 2 (1); M = W, R = Ph, L = PPh3, n = 2 (2); M = Mo, R = Ph, L = PPh3, n = 1 (3); M = W, R = Ph, L = PPh3, n = 1 (4); m = Mo, R = Ph, L = py, n = 1 (5). M = Mo, R = Bu-t, L = PPh3, n = 1 (6), [Mo(eta (5)-C5H5)(2)(mu -SPh)(2)CuNCMe](2)[BF4](2) (7): and the trinuclear compound [\Mo(eta (5)-C5H5)(2)(mu -SPh)(2)\(2)Cu][BF4] (8) have been prepared and characterised. The molecular structures of 1, 3 and 7 have been determined by single-crystal X-ray diffraction studies. The molybdenum atoms exhibit the usual bent metallocene structure with a distorted tetrahedron around each metal atom, similar to that of the free metalloligand. The coordination around the copper is tetrahedral in 1 and in the dimer 7, and trigonal distorted in 3. The MoS2Cu core is almost planar in 1, with an angle of 177.3 degrees between the MOS2 and the CuS2 planes, this angle is 154.2 degrees for 3 146.2 and 149.4 degrees for 7, and in the Cu2S2 core of the dimer the folding angle is 166.1 degrees. The large angles at the sulphur atoms, the acute angles at the metals, the Mo-Cu distances of 4.011 Angstrom (1), 3.664 Angstrom (3), 3.653 and 3.649 Angstrom (7) and the Cu-Cu distance of 3.147 Angstrom are consistent with the absence of direct metal-metal interactions. (C) 2001 Elsevier Science BN. All rights reserved. |
