摘要
在溶剂热条件下,以噻吩-2,5-二羧酸(H_2TDC)和2,6-二(1-咪唑基)吡啶(BIP)为混合配体,与Co(NO_3)_2·6H_2O反应合成新型配位聚合物Co(BIP)(TDC)·2H_2O(化合物1).通过X-射线单晶衍射、元素分析、红外分析、X-射线粉末衍射和热重分析对化合物进行表征.经X-射线单晶衍射分析得到晶体解析结果:化合物1属于单斜晶系,C2/m空间群,a=1. 668 0(3) nm,b=1. 839 0(4) nm,c=0. 682 00(14) nm,β=99. 20(3)°,Z=4.化合物通过双配体桥联形成Co(Ⅱ)离子为节点的锁链状一维结构,通过氢键作用进一步形成三维超分子结构.磁性研究表明,相邻Co(Ⅱ)离子之间存在反铁磁耦合作用.
Coordination polymer Co (BIP) (TDC). 2H20 ( 1 ) was prepared by a mixture of thiophene- 2,5 -dicarboxylic acid ( H2 TDC ), 2,6-bis ( imidazole-1 -yl ) pyridine ( B IP ) and Co ( NOB ) 2· 6H2Ounder the solvothermal conditions, and characterized by single-crystal X-ray diffraction, elemental analysis, infrared spectra analysis, powder X-ray diffraction and TG analysis. The single-crystal X-ray diffraction analysis showed that compound 1 crystallized in monoclinic system, C2/m space group with a = 1. 668 0 (3) nm, b = 1. 839 0 (4) nm, c = 0. 682 00 ( 14 ) nm,β = 99.20 (3) °, Z = 4. For compound 1, Co ( Ⅱ ) ions were bridged by H2TDC and BIP ligands to form a one-dimensional chain structure, which further extended to three-dimensional framework by hydrogen bonds. Study of the magnetic property showed that there was antiferromagnetic interaction in compound 1.
作者
朱文丽
王淑菊
熊刚
由立新
ZHU Wen-li, WANG Shu-ju, XIONG Gang, YOU Li-xin(Shenyang University of Chemical Technology, Shenyang 110142, China)
出处
《沈阳化工大学学报》
CAS
2018年第3期213-217,共5页
Journal of Shenyang University of Chemical Technology
基金
辽宁省博士启动基金项目(201501075)
关键词
配位聚合物
晶体结构
磁性
钴(Ⅱ)
coordination polymers
crystal structure
magnetism
Co( Ⅱ )