期刊
POLYHEDRON
卷 28, 期 16, 页码 3526-3532出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.poly.2009.05.079
关键词
Copper(II) complex; 2,6-Pyridinedicarboxylic acid; 2-Aminopyridine; Crystal structure; Antimicrobial; Radical scavenging; Solid state UV-Vis
资金
- Dumlupmar University Research Fund [2007/2]
- Faculty of Arts and Sciences of Ondokuz Mayis University [F.279]
A novel bridged binuclear Cu(II) complex with mixed ligands, di-mu-(2-aminopyridine(N,N'))-bis[(2,6-pyridinedicarboxylate)aquacopper(II)] tetrahydrate, formulated as [Cu(mu-ap)(dipic)(H2O)](2)center dot 4H(2)O (1) (dipic = 2,6-pyridinedicarboxylate, ap = 2-aminopyridine), has been synthesized and characterized by elemental, spectral (IR and UV-Vis.), thermal analysis, magnetic measurements and single crystal X-ray diffraction analysis. The central Cu(II) ion resides on a centre of symmetry in a distorted square-pyramid coordination environment comprising of two N atoms, one from dipic and one from the ap ring, two carboxylate O atoms from dipic, and one O atom from water. Intermolecular N-H center dot center dot center dot O and O-H center dot center dot center dot O hydrogen bonds and pi-pi stacking interactions seem to be effective in the stabilization of the crystal structure. The free ligands and the complex were also evaluated for their antimicrobial and radical scavenging activities (DPPH = 1,1-diphenyl-2-picrylhydrazyl hydrate) using in vitro microdilution methods. Antimicrobial screening of the free ligands and their complex showed that the free ligands and the complex possess antifungal activity against Candida sp. (c) 2009 Elsevier Ltd. All rights reserved.
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