Novel palladium(II)-Tin and palladium(II)-germanium complexes

Abstract

Novel palladium(II) derivatives containing metal-metal bonds of the type trans-[Pd(RNC)2(M′X3)2] and [Pd(C6H5NC)(L)(M′Cl3)Cl] (RNC = phenyl, cyclohexyl- and p-nitrophenylisocyanide; L = triphenylphosphine and triphenylarsine; M′ = Sn and Ge; X = Cl and Br) have been prepared. These compounds have been characterized by elemental analysis, molecular weight measurements, i.r. spectra, X-ray powder diffraction patterns and cleavage of PdSn and PdGe bonds by reaction with iodine. Their structure was assigned, where possible, on the basis or i.r. data. An attempt to identify the PdSn and PdGe stretching frequencies has been made: the ν(PdSnCl3) appears to fall in the range 199–226 cm−1; ν(PdSnBr3) in the range 156–180 cm−1, and ν(PdGeCl3) in the range 228–240 cm−1.