联苯-2,4,4′,6-四甲酸银、咪唑-菲啰啉-苯氧乙酸镉配位聚合物的合成、结构及与DNA的相互作用（英文）

Syntheses, Structures, DNA Interaction of Ag(Ⅰ) and Cd(Ⅱ) Coordination Polymers Based on Biphenyl-2,4,4′,6-tetracarboxylic Acid and Imidazo-phenanthrolin-phenoxy Acetic Acid

由联苯-2,4,4′,6-四甲酸(H_4BPTC,C_(16)H_(10)O_8)和2-4-(1H-咪唑-2-[4,5-f][1,10]菲啰啉基)苯氧乙酸(HPIMPHC,C_(21)H_(14)N_4O_3),水热合成了2种新型配位聚合物[Ag_4(BPTC)]_n(1),[Cd(PIMPHC)_2]_n(2)。用元素分析、红外光谱、热重分析和X射线单晶衍射对配合物进行了表征和结构分析。配合物1属三斜晶系,空间群为P1;Ag(Ⅰ)的配位数分别为4、3、2,配位构型为变形四面体、平面三角形和V型。配合物2属正交晶系,空间群为Pbcn;Cd(Ⅱ)的配位数为6,配位构型为变形的八面体,Cd(Ⅱ)离子间通过三齿配体PIMPHC-桥连,形成2D网状结构。用EtBr荧光探针法研究了配体及配合物与ct-DNA的相互作用。

Two novel coordination polymers[Ag4（BPTC）]n （1） and[Cd（PIMPHC）2]n （2） were synthesized under hydrothermal reactions by using biphenyl-2,4,4＇,6-tetracarboxylic acid （H4BPTC, C16H10O8） and 2-（4-（1H-imidazo-2-[4,5-f] [1,10]phenanthrolinyl）phenoxy） acetic acid （HPIMPHC, C21H14N4O3）. They were characterized by elemental analysis, IR spectra, TGA, single crystal X-ray diffraction. Complex 1 crystallizes in triclinic system with space group P1, the coordination numbers of Ag（Ⅰ） are four, three and two, forming distorted tetrahedron, flat triangular and V-type coordination geometry. Complex 2 crystallizes in orthorhombic system with space group Pbcn, Each Cd（Ⅱ） is bridged by the PIMPHC- anions, forming a distorted octahedral coordination geometry. The interaction of complexes, ligands and ct-DNA were studied by EtBr fluorescence probe.