complexes 1 and 2 based on the Bp4mT ligand presented dimeric structures in which the Cu(II) ions were located in a five-coordinated distorted square-pyramidal geometry, whereas both 3 and 4 complexes were mononuclear with the Cu(II) ions exhibiting a tetracoordinated square planar configuration. Their interactions with calf thymus DNA (CT-DNA) were investigated using viscosity measurements and fluorescence
四种新型
铜(II)配合物[Cu II(Bp4mT)(μ-Cl)] 2(1),[Cu II(μ-Bp4mT)Br] 2(2),[Cu II(HBpT)Cl](3) ,和[Cu II(HBpT)Br](4)(Bp4mT = 2-苯甲酰基
吡啶-4-甲基
硫代半碳酰胺,HBpT = 2-苯甲酰基
吡啶硫代半碳酰胺)的合成和表征,采用单晶X射线衍射,元素分析,红外光谱,和紫外可见光谱。X射线分析表明,基于Bp4mT
配体的配合物1和2呈现二聚结构,其中Cu(II)离子位于五坐标畸变的方形-锥体几何形状中,而3和4个络合物都是单核的,而Cu(II)离子则表现出四坐标的方形平面构型。使用粘度测量和荧光光谱法研究了它们与小牛胸腺DNA(CT-DNA)的相互作用。多光谱证据显示这些复合物与人
血清白蛋白(H
SA)之间存在相互作用。所有这些复合物在
过氧化氢存在下均显示出超螺旋DNA的有效氧化裂解,大概是通过一种氧化机