Synthesis, characterization and thermal properties of palladium(II) complexes containing phenyltetrazole.: Crystal structure of trans-[C40H64N8O2PdCl2]

The new 5-(n-alkoxyphenyl)-2-n-alkyltetrazole (L-1) and alpha,omega-bis-[5-(4-Dentoxyphenyl)-2-alkanetetrazoles] (L-2) ligands and their Pd(II) complexes have been synthesized. The X-ray diffraction study of the palladium complex with L-1 reveals a mononuclear structure in which the geometry of the Pd(L-1)(2)Cl-2 chromophore is planar as required by the inversion center at the palladium atom, where each molecule of phenyltetrazole binds to the metal ion in a monodentate fashion via a Pd-N1 sigma-bond. For the palladium complex with L-2, a dinuclear structure ([Pd-2(L-2)(2)Cl-4]) has been proposed on the basis of NMR and IR spectroscopy.