Synthesis and Characterization of Mono and Mixed Ligand, Ni(II), Pd(II) and Pt(II) Complexes of S-5-Phenyl -1, 3, 4-Oxadiazole-2-yl Benzothioate with some Tertiary Diphosphines Ligands

摘要

Mixed ligand transition metal Ni(II), Pd(II) and Pt(II)) complexes containing two sorts of ligands: S-5-phenyl -1,3,4-oxadiazole-2-yl benzothioate (phozbt) and terteiary diphosphines, have been prepared. Ni(II) complex have a tetrahedral geometry and all Pd and Pt complexes are square planer geometry. The diphosphines ligands act as a bidentate chelates that bonded to metal center (Ni, Pd and Pt) through both phosphorous atoms. On the other hand (phozbt) ligand bound to Ni(II) metal via carbonyl oxygen atom, while in palladium and platinum complexes it was bound at oxadiazole sulfur atom. The prepared ligand and complexes were characterized on the basis of FT-IR, ~1H, ~(31)P and ~(13)C -NMR spectra as well as molar conductivity, magnetic susceptibility measurements, UV-visible and X-ray diffraction.