Studies on Zinc(II) Perchlorate Complex with Tripod Ligand Tris(N-methylbenzimidazol-2-ylmethyl)Amine and Salicylate

Abstract

A novel five-coordinate zinc(II) complex with the tripod ligand tris(N-methylbenzimidazol-2-ylmethyl)amine (Mentb) and salicylate, with the composition [Zn(Mentb)(salicylate)](ClO4) · 1.5DMF, was synthesized and characterized by means of elemental analyses, electrical conductivities, thermal analyses, i.r., u.v. and 1H-n.m.r. spectra. The crystal structure of the complex has been determined by a single-crystal X-ray diffraction method, and shows that the Zn II atom is bonded to a tris(N-methylbenzimidazol-2-ylmethyl)amine (Mentb) ligand and a salicylate molecule through four N atoms and one O atom, giving a distorted trigonal-bipyramidal coordination geometry [τ(Zn) = 0.78], with approximate C 3 molecular symmetry.