2,2'-联吡啶-3,3'-二羧酸锰(Ⅱ)配合物的合成、晶体结构及性能研究

摘要

以2,2’-联吡啶-3,3’-二羧酸(H2L)和1,10-邻菲啰啉(Phen)为配体合成了一个新的锰(Ⅱ)配合物[Mn(H2O)(L)(Phen)2]· (H2O)3.该配合物晶体属单斜晶系,空间群P21/c.在配合物中,中心锰(Ⅱ)离子的配位数是6,处于变形的八面体配位环境中.还测定了标题配合物的磁性,荧光和电化学性能,结果表明:在低温下,配合物有反铁磁性；当激发波长为656 nm时,配合物在682 nm附近有一个宽的荧光发射峰;在循环伏安过程中配合物的电子转移是准可逆的,对应的电极反应是Mn(Ⅲ)/Mn(Ⅱ).%A new Mn(Ⅱ) complex [Mn(H2O)(L)(Phen)2]· (H2O)3 (1)with 2,2'-bipyridine-3,3'-dicarboxylic acid (H2L)and 1,10-Phenanthroline (Phen) as ligands has been synthesized.Crystal data for 1 are as follows:monoclinic,space group P21/c.In 1,the central Mn(Ⅱ) ion is located in a distorted octahedral coordination environment.The magnetic,fluorescence and electrochemical properties of 1 are studied.The results show that 1 has weak antiferromagnetic property at low temperatures,and when the exciting radiation is set at 656 nm,1 can give off one broad emission band at around 682 nm.The electron transfer is quasi reversible in the electrode reaction,corresponding to Mn(Ⅲ)/Mn(Ⅱ).CCDC:874919.