Complexes of some 3d metal ions of the Schiffʹs base, N,N′-di-4-(4′-pentyloxybenzoate) salicylidene-1″, 3″-diamino-2″-propanol: Synthesis and spectral studies

A nematogenic Schiffʹs base, N,N′-di-4-(4′-pentyloxybenzoate)salicylidene-l″, 3″-diamino-2″-propanol, (abbreviated as H2L6), was synthesized and its structure studied by elemental analyses, mass, NMR and IR spectra. The Schiffʹs base behaves as a dinegative hexa/tetradentate species in its metal complexes of the general formula, [ML6]n where MII═Mn, Co, Ni, Cu and Zn. Their structural characterizations were made by various spectroscopic techniques.