Synthesis, Solid State Characterization and Thermal Aspects of Coordination Polymers of Some Transition Metal Ions with Sebacoyl bis(isonicotinoylhydrazone)

Abstract

A series of coordination polymers of Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) have been synthesized from sebacoyl bis(isonicotinoylhydrazone) (SEBI) ligand and metal salts. The coordination polymers have been characterized using elemental analyses, magnetic susceptibility measurements, spectral (electronic and infrared) studies, powder XRD and thermal analyses. The IR spectral data suggest that sebacoyl bis(isonicotinoylhydrazone) behaves as an octadentate chelating ligand. On the basis of electronic spectral studies and magnetic moment values, an octahedral geometry has been assigned to Mn(II), Co(II), Ni(II) and Cu(II) coordination polymers while tetrahedral geometry to Zn(II) coordination polymer. The thermogravimetric analyses of parent ligand and its metal chelates have shown remarkable differences in mode of thermal decomposition and their thermal stabilities.