Palladium(II) chloride interaction with chelating bis(phosphine sulfides).Effect of the ligand structure on the complex geometry

Interaction of PdCl2 in chloroform with bis(phosphine sulfides) Ph2P(S)-X-P (S)Ph-2 (X-CH2, C(CH3)(2), CH2CH2, NH, S, and SCH2S) has been studied. Mech anism of the reaction has been found to vary dramatically with the identity of X. The structures of the resultant complexes were evaluated by UV and I R spectroscopy. Crystal structures were determined by X-ray diffraction for two of the compounds (A: [Ph2P(S)-(CH2)(2)-P(S)Ph-2]PdCl2. CH3CN, P2(1)/n, Z = 4, a = 10.104(2), b = 20.939(4), c = 14.034(3) Angstrom, gamma = 102.5 4(2)degrees; B: [Ph2P(s)-N-P(s)Ph-2](2)Pd . 2CHCl(3), P (1) over bar, Z = 1 , a = 9.539(1), b = 12.333(3), c = 12.866 Angstrom, alpha = 111.83(2)degree s, beta = 95.70(3)degrees gamma = 99.84(3)degrees).