SYNTHESIS AND CHARACTERIZATION OF SOME COBALT(II), NICKEL(II), ZINC(II) AND CADMIUM(II) HYDRAZINE AZIDES

A series of metal(II) hydrazine-azides of the type M(N2H4)(x)(N-3)(y)C l-2-y, where x = y = perpendicular to or 2; M = Co(II), Ni(II), Zn(II) and Cd(II), have been prepared and characterized by elemental analyse s, magnetic susceptibility data, electronic and infrared spectra. The cobalt(II), nickel(II), zinc(II) and cadium(II) complexes are stable s olid powders at room temperature but explode or give sparks on heating . Attempts to isolate the manganese(II), iron(II) and copper(II) compl exes were unsuccessful. All the complexes are insoluble in common orga nic solvents as well as in DMF and DMSO. Electronic spectral bands for the cobalt(II) complexes between 8500-19050 cm(-1) and nickel(II) com plexes between 10300- 16400 cm(-1) and their mu(eff) values around 4.9 adn 3.3 B.M, respectively, correspond to those observed for octahedra l geometry. IR spectra of the complexes indicate a monodentate bonding or bridging character for both N2H4 and N-3(-) groups depending on th e composition and the metal.