两个线形三核配合物的晶体结构及性质（英文）  

Crystal Structures and Properties of Two Linear Trinuclear Complexes

作　　者：王丽雯 尚启高 周晶晶[1] 周红[1] 潘志权[1] 程清蓉[1] WANG Li-Wen;SHANG Qi-Gao;ZHOU Jing-Jing;ZHOU Hong;PAN Zhi-Quan;CHENG Qing-Rong(Wuhan Institute of Technology,Wuhan 430074,China)

机构地区：[1]武汉工程大学,武汉430074

出　　处：《无机化学学报》2018年第5期957-966,共10页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21301131);中国地质大学(武汉)国家纳米中心开放基金(No.NGM2016KF013);武汉工程大学科学研究基金(No.10122013)资助项目

摘　　要：合成并表征了2个新的线性三核配合物[Co_2~ⅢCo~ⅡL_2(μ-OAc)_4](1)和[Ni_3L_2(μ-OAc)_2(CH_3OH)_2]·2H_2O(2),其配体L为2-羟基-1,3-丙二胺和5-氟水杨醛缩合的产物。配合物1与DNA的作用通过紫外-可见光谱、荧光光谱、粘度实验和电化学方法进行了研究。紫外-可见光谱的结果表明配合物1与DNA的结合常数为2.43×10^(5 )L·mol^(-1)。荧光光谱的研究结果表明配合物1能取代溴化乙锭和DNA结合,其淬灭常数为4.92×10^(3 )L·mol^(-1)。配合物1和2的变温磁学性质研究表明在2个配合物的三金属中心之间均存在反铁磁性耦合。Two new trinuclear complexes,[CoⅢ2CoⅡL2(μ-OAc)4](1)and[Ni3L2(μ-OAc)2(CH3OH)2]·2H2O(2),were obtained and fully characterized,where L was the condensation product between 2-hydroxy-1,3-propane diamine and 5-fluorosalicylaldehyde.The interaction of complex 1 with DNA has been investigated by spectroscopy,viscosity measurements and electrochemical studies.Absorption spectroscopic investigation reveals intercalative binding of Co complex with DNA,with a binding constant of 2.43×105 L·mol-1.Fluorescence spectroscopy shows that complex 1 can displace ethidium bromide and bind to DNA,with a quenching constant of 4.92×103 L·mol-1.The variable-temperature magnetisms of complexes 1 and 2 show that there are antiferromagnetic couplings among the three metal centers in both complexes.CCDC:1587441,1;1587442,2.

关 键 词：线性三核配合物 晶体结构 DNA切割活性 磁性质 

分 类 号：O614.812[理学—无机化学] O614.813[理学—化学]