Alkylamine-Templated Niccolite Frameworks of [(GaMII)-M-III(HCOO)(6)](-) (M = Fe, Ni): Structure, Magnetism, and Dielectricity
Alkylamine-Templated Niccolite Frameworks of [(GaMII)-M-III(HCOO)(6)](-) (M = Fe, Ni): Structure, Magnetism, and Dielectricity
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[(GaMII)-M-III(HCOO)(6)](-) (M = Fe, Ni) 的烷基胺模板镍钴矿框架：结构、磁性和介电性
DOI：
10.1021/acs.inorgchem.8b00124
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发表时间：
2018
影响因子：
4.6
通讯作者：
Gao Song
中科院分区：
文献类型：
--
作者：
Wang Kai;Xiong Jian-Bo;Xia Bin;Wang Qing-Lun;Tong Yu-Zhang;Ma Yue;Wang Zhe-Ming;Gao Song
采用溶剂热法合成了五种异金属甲酸骨架[EtA][GaIIIFeII(HCOO)6] （1; EtA = CH3CH2NH3+）、[DMA][GaIIIFeII(HCOO)6] （2; DMA = (CH3)2NH2+）、[DEtA][GaIIIFeII(HCOO)6] （3; DEtA = (CH3CH2)2NH2+）、[MA][GaIIINiII(HCOO)6] （4; MA = CH3NH3+）和[DMA][GaIIINiII(HCOO)6](5)。配合物1 - 5是结构上的，均在三角p3空间群中结晶。每个金属中心为6连，每个hco -桥接配体呈反-反模式，构建三维niccolite状结构。所有配合物在低温下都表现出弱铁磁性。一项变温（VT）介电研究表明，介电异常是由质子化胺在冻结过程中的运动冻结引起的。
The five heterometallic formate frameworks [EtA][GaIIIFeII(HCOO)6] (1; EtA = CH3CH2NH3+), [DMA][GaIIIFeII(HCOO)6] (2; DMA = (CH3)2NH2+), [DEtA][GaIIIFeII(HCOO)6] (3; DEtA = (CH3CH2)2NH2+), [MA][GaIIINiII(HCOO)6] (4; MA = CH3NH3+), and [DMA][GaIIINiII(HCOO)6] (5) were synthesized through solvothermal methods. Complexes1–5are isotructural, and all crystallize in the trigonalP3̅1cspace 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.