| Abstract: | Three Pd(II) complexes Pd2(μ-Cl)2{7,8-(PPh2)2-7,8-C2B9H10}2] · 0.25CH2Cl2 (1), Pd{7,8-(PPh2)2-7,8-C2B9H10}2] · 4CHCl3 (2) and PdCl2(1,2-(PPh2)2-1,2-C2B10H10)] (3) have been synthesized by the reactions of 1,2-(PPh2)2-1,2-C2B10H10 with PdCl2 in acetonitrile, cyanophenyl and dichloromethane, respectively. A fourth complex, PdI2(1,2-(PPh2)2-1,2-C2B10H10)] (4), was obtained by a ligand exchange reaction through the substitution of the Cl− of complex 3 with I−. All four complexes have been characterized by elemental analysis, FT-IR, 1H and 13C NMR spectroscopy and X-ray structure determination. Single crystal X-ray determination showed that the carborane cage, nido for 1, 2 and closo for 3, 4, was coordinated bidentately to the Pd atom through the two P atoms, and the geometry at the Pd atom was square-planar in all the complexes. |
