摘要
合成了以乙二胺四乙酸为配体的单核铜配合物Cu(H2EDTA)(H2O).用X射线衍射单晶分析法测定了配合物的结构,晶体为单斜晶系,属于P21/c晶群,晶胞参数为a=11.633(3),b=7.019 7(15),c=16.562(4),β=92.019(4)°,晶胞数为Z=4.相邻Cu离子之间通过氢键相连进行磁超交换作用,变温磁化率显示配合物为弱的反铁磁交换作用,拟合结果为g=2.14,zj′/k=-1.3 K.
An ethylenediamine tetraacetic acid(EDTA)-bridged coordination complex Cu(H2EDTA)(H2O) has been synthesized and characterized by X-ray crystal structure determination and magnetic studies. The complex crystallizes in the monoclinic system, P2,/c, with α=11. 633(3) A, b=7. 019 7(15) /k, c=16. 562 (4) .A, β= 92. 019(4) °, and Z=4. The magnetic behavior in the temperature range (2-300K) reveals the antiferromagnetic interactions in the two complexes. The magnetic exchange passway is through the hydrogen bonds formed with the neighbor two moleculae. The best fitted parameters for the complex are g=2.14, zj'/ k=-1. 3K.
出处
《三峡大学学报(自然科学版)》
CAS
2006年第4期381-384,共4页
Journal of China Three Gorges University:Natural Sciences
关键词
乙二胺四乙酸
单核铜配合物
单晶结构
磁化率
ethylenediamine tetraacetate acid
Cu( Ⅱ ) coordination complexes
single crystal structure
magnetic susceptibility