Synthesis and Characterization of Thiolato-Bridged Titanium-Platinum and -Palladium Heterobinuclear Complexes. Molecular Structure of [(.eta.5-C5H4SiMe3)2Ti(.mu.-SPh)2Pd(C6F5)2]

A series of titanium-platinum and -palladium heterobinuclear compounds with double thiolato bridges, [(5-C5H4R) 2Ti(-SR)2M(C6F5)2] (R = H, SiMe3; R = Ph, C6F5; M = Pd, Pt), has been prepared. The crystal structure of [(5-C5H4SiMe3) 2Ti(-SPh)2Pd(C6F5)2] has been established by single-crystal X-ray crystallography: the complex crystallizes in the monoclinic system in space group P21lc; a= 10.237 (2) Å; b = 14.635 (3) Å; c = 27.651 (6) Å; = 90.83 (2)°; Z = 4; and R = 0.056. The titanium atom is in pseudotetrahedral coordination environment, whereas the palladium is square-planar. The phenyl groups on the sulfur atoms adopt an endo (syn) arrangement with respect to the central Ti-S2-Pd core.