Crystal and molecular structure of five coordinate copper(II) complex with 2,6-bis[1-(methoxycarbonylmethyl-hydrazono)ethyl] pyridine

The title compound was obtained by a template synthesis from 2,6-diacetylpyridine, ethylhydrazinoacetate and CuCl2 . 2H(2)O (molar ratio 1 : 2 : 1, in methanol), and its structure has been determined by single-crystal X-ray diffraction: monoclinic space group P2(1)/c, a = 13.906(5), b = 18.199(6), c = 16.641(6) Angstrom, beta = 107.18(3)degrees and z = 4. The ligand was found to be tridentate in a trigonal-bipyramidal coordination geometry with two chloride ligands. There are two independent complex molecules, one of which is hydrogen bonded to the water of crystallization