SYNTHESIS, SPECTRAL AND STRUCTURAL CHARACTERIZATION OF A MONOMERIC CHLORO COMPLEX OF ZINC(II) WITH PICOLINIC-ACID, [ZN(C5H4NCO2H)(C5H4NCO2)CL]

The title compound of zinc(II) and picolinic acid was synthesized and characterized by X-ray crystallographic and spectroscopic methods. In the structure of [Zn(C5H4NCO2H)(C5H4NCO2)Cl], each zinc atom is coordi nated by two nitrogen atoms at Zn-N distances of 2.040(8) Angstrom and two oxygen atoms, O(1), at Zn-O bond lengths of 2.152(5) Angstrom, be longing to two picolinate ligands. Coordination number five of the zin c atom is completed by a Zn-Cl bond [2.221(3) Angstrom]. The O(2)... O (2) separation between noncoordinated picolinate oxygen atoms of adjac ent polyhedra is 2.41(1) Angstrom. The IR and Raman spectral results c onfirm the existence of neutral picolinic acid as well as the picolina te anion.