新型铜 (II) 和锌 (II) 与双(吡咯-2-基-甲胺)配体配合物的合成、表征、DNA 结合特性和抗氧化活性
摘要:
在元素分析、摩尔电导率、1H NMR、UV/Vis 和 IR 光谱的基础上制备和表征了三种新型配体 H4Ln(n = 1-3)及其铜(II)和锌(II)配合物以及质谱。通过吸收光谱、溴化乙锭置换实验和粘度测量研究了配体及其复合物的 DNA 结合特性。实验结果表明,新配体及其配合物可与DNA结合,且配合物的结合亲和力高于配体。此外,配体和配合物的抗氧化活性通过体外超氧化物和羟基自由基清除方法测定,表明配合物比单独的配体表现出更有效的抗氧化活性。
Synthesis, characterization and DNA-binding properties of four Zn(II) complexes with bis(pyrrol-2-yl-methyleneamine) ligands
摘要:
A novel series of bis(pyrrol-2-yl-methyleneamine) ligands H2Ln (n = 1-4) were synthesized via condensation of diamines with two equivalents of 2-formyl-pyrrole (2). Their Zn(II) complexes were characterized by elemental analyses, mass spectra and IR spectra. The crystal structures of [ZnL1](2) and [ZnL4](2) obtained from ethanol solution was determined by X-ray diffraction analysis, each of them possesses a double-stranded helical geometry. In addition, the DNA-binding properties of the compounds have been fully investigated by absorption, fluorescence and viscosity measurements. (C) 2007 Elsevier Ltd. All rights reserved.