Synthesis, Characterization, Covalent Binding, and Degree of Unwinding of Platinum(II) Bipyridine Complexes
作者:Mohan Patel、Deepen S. Gandhi、Pradhuman A. Parmar、Bhupesh S. Bhatt、Anshul P. Patidar
DOI:10.1002/zaac.201100466
日期:2012.4
The binding of the complexes with herring sperm DNA (HS DNA) was investigated by absorption titration and viscosity measurements. It was found that the complexes have ability of interaction with DNA by covalent mode. The intrinsic binding constant Kb of the complexes with HS DNA is 8.76 × 104 (1), 9.89 ×104 (2), 1.52 × 105 (3), and 2.31 × 105 (4) M–1. The slight depression in relative specific viscosity
配合物 [Pt(3''-clpbpy)Cl2] (1) [3''-clpbpy = 4-(3''-chlorophenyl)-6-phenyl-2, 2'-bipyridine], [Pt(4' '-clpbpy)Cl2] (2) [4''-clpbpy = 4-(4''-氯苯基)-6-苯基-2, 2'-联吡啶], [Pt(3''-brpbpy)Cl2] ( 3) [3''-brpbpy = 4-(3''-溴苯基)-6-苯基-2, 2'-联吡啶]和[Pt(4''-brpbpy)Cl2] (4) [4'' -brpbpy = 4-(4''-bromophenyl)-6-phenyl-2, 2'-bipyridine] 合成并表征。通过吸收滴定和粘度测量研究了复合物与鲱鱼精子 DNA (HS DNA) 的结合。发现复合物具有以共价方式与DNA相互作用的能力。与 HS DNA 复合物的内在结合常数