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Bioinorganic Chemistry and Applications
Volume 2012 (2012), Article ID 609796, 7 pages
http://dx.doi.org/10.1155/2012/609796
Research Article

Synthesis, Crystal Structure, and DNA-Binding Studies of a Nickel(II) Complex with the Bis(2-benzimidazolymethyl)amine Ligand

School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

Received 20 May 2011; Revised 7 June 2011; Accepted 8 June 2011

Academic Editor: Santiago Gómez-Ruiz

Copyright © 2012 Huilu Wu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A V-shaped ligand Bis(2-benzimidazolymethyl)amine (bba) and its nickel(II) picrate (pic) complex, with composition [Ni(bba)2](pic)2⋅3MeOH, have been synthesized and characterized on the basis of elemental analyses, molar conductivities, IR spectra, and UV/vis measurements. In the complex, the Ni(II) ion is six-coordinated with a N2O4 ligand set, resulting in a distorted octahedron coordination geometry. In addition, the DNA-binding properties of the Ni(II) complex have been investigated by electronic absorption, fluorescence, and viscosity measurements. The experimental results suggest that the nickel(II) complex binds to DNA by partial intercalation binding mode.