Spectral studies of copper(II) complexes of tridentate acylhydrazone ligands with heterocyclic compounds as coligands: X-ray crystal structure of one acylhydrazone copper(II) complex
作者:Nancy Mathew、Maheswaran Sithambaresan、M.R. Prathapachandra Kurup
DOI:10.1016/j.saa.2011.04.036
日期:2011.9
Six copper(II) complexes of 2-hydroxy-4-methoxybenzaldehyde nicotinoylhydrazone (H(2)hmbn), 2-hydroxy-4-methoxyacetophenone nicotinoylhydrazone (H(2)hman), 2-hydroxy-4-methoxybenzaldehyde benzoylhydrazone (H(2)hmbb) and 2-hydroxy-4-methoxyacetophenone benzoylhydrazone (H(2)hmab) have been synthesized. The complexes viz. [Cu(hmbn)](2)center dot 2H(2)O (1). [Cu(hman)](2) (2), [Cu(hmbb)](2)center dot 2H(2)O (3), [Cu(hmbb)phen]center dot 1(1/2)H2O (4). [Cu(hmbb)(bipy)center dot H2O] (5) and [Cu(hmab)phen] (6) were characterized by different physicochemical techniques. The crystal structure of [Cu(hman)phen] is obtained and it has a distorted square pyramidal geometry with pi-pi stacking interactions and significant C-H pi interactions. (C) 2011 Elsevier B.V. All rights reserved.