Synthesis, characterization, and DNA binding studies of a chromium(III) complex containing a tridentate ligand

被引:56
|
作者
Vaidyanathan, VG [1 ]
Nair, BU [1 ]
机构
[1] Cent Leather Res Inst, Chem Lab, Madras 600020, Tamil Nadu, India
关键词
chromium; tridentate ligands; DNA cleavage; radicals;
D O I
10.1002/ejic.200300170
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
[Cr(bzimpy)(2)]Cl, where bzimpy is 2,6-bis(benzimidazol-2-yl)-pyridine, has been synthesized and characterized by ESI-MS, UV/Visible, and fluorescence spectra. Absorption titration and thermal denaturation experiments indicate that the complex binds to DNA with moderate strength, while viscosity measurements show that it may undergo surface binding. The fluorescence intensity of the complex increases with increasing DNA concentration, in contrast to [Cr(phen)(3)](3+) and [Cr(bpy)(3)](3+). The complex cleaves pBR322 DNA in the presence of H2O2. (C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003.
引用
收藏
页码:3633 / 3638
页数:6
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