摘要
使六水合氯化钴与多功能有机配体2-(间溴)苯基-4,5-咪唑二羧酸(m-BrPhH3IDC)在溶剂热条件下反应,制得了网状金属有机框架{[Co3(m-BrPhIDC)2(H2O)7]·H2O}n(配合物1).采用元素分析、红外光谱、粉末X射线衍射以及X射线单晶衍射表征了其组成和结构.结果表明:钴离子在配体m-BrPhIDC^3-的桥联作用下,形成了新颖的复杂三维固态结构.研究了配合物1在空气气氛下的热稳定性以及在2~300K范围内的变温磁化率,发现相邻的钴离子间存在着弱的反铁磁耦合作用.
A 3D metal-organic framework( MOF),{ [Co3( m-BrPhIDC)2( H2O)7]·H2O}n( polymer1) was solvothermally prepared through the reaction of 2-( m-bromophenyl)-1H-imidazole-4,5-dicarboxylic acid( m-BrPhH3IDC) with CoCl2·6H2O. Its molecular structure was characterized by infrared spectroscopy,elemental analysis,PXRD and X-ray single crystal diffraction. The results showed that Co^2+atoms were connected by m-Br Ph IDC^3-ligands to form a complicated 3D solid-state structure. The thermal and magnetic properties of polymer 1 were investigated as well. Magnetic measurement showed that the antiferromagnetic coupling between the Co( Ⅱ) ions in polymer 1 could be observed.
出处
《郑州大学学报(理学版)》
CAS
北大核心
2014年第4期68-72,共5页
Journal of Zhengzhou University:Natural Science Edition
基金
国家自然科学基金资助项目
编号21341002
J1210060