Wang Kai, Xiong Jian-Bo, Xia Bin, Wang Qing-Lun, Tong Yu-Zhang, Ma Yue, Wang Zhe-Ming, Gao Song
College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) , Nankai University , Tianjin 300071 , People's Republic of China.
College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , People's Republic of China.
Inorg Chem. 2018 Apr 2;57(7):3941-3947. doi: 10.1021/acs.inorgchem.8b00124. Epub 2018 Mar 12.
The five heterometallic formate frameworks [EtA][GaFe(HCOO)] (1; EtA = CHCHNH), [DMA][GaFe(HCOO)] (2; DMA = (CH)NH), [DEtA][GaFe(HCOO)] (3; DEtA = (CHCH)NH), [MA][GaNi(HCOO)] (4; MA = CHNH), and [DMA][GaNi(HCOO)] (5) were synthesized through solvothermal methods. Complexes 1-5 are isotructural, and all crystallize in the trigonal P3̅ c space group. Each metal center is 6-connected, with each HCOO bridging ligand in an anti-anti mode to build a three-dimensional niccolite-like architecture. All of the complexes exhibit weak ferromagnetism at low temperature. A variable-temperature (VT) dielectric study indicates that the dielectric anomaly is induced by the freezing of motions from the protonated amines during the freezing process.
通过溶剂热法合成了五种异金属甲酸盐骨架化合物[EtA][GaFe(HCOO)]（1；EtA = CHCHNH）、[DMA][GaFe(HCOO)]（2；DMA = (CH)NH）、[DEtA][GaFe(HCOO)]（3；DEtA = (CHCH)NH）、[MA][GaNi(HCOO)]（4；MA = CHNH）和[DMA][GaNi(HCOO)]（5）。配合物1 - 5是同构的，均结晶于三方晶系P3̅ c空间群。每个金属中心都是六配位的，每个HCOO桥联配体以反 - 反模式连接，构建了三维镍黄铁矿型结构。所有配合物在低温下均表现出弱铁磁性。变温（VT）介电研究表明，介电异常是由质子化胺在冷冻过程中的运动冻结引起的。
