Wang, Kai Xiong, Jian-Bo Xia, Bin Wang, Qing-Lun Tong, Yu-Zhang Ma, Yue Wang, Zhe-Ming Gao, Song Alkylamine-Templated Niccolite Frameworks of [Ga<sup>III</sup>M<sup>II</sup>(HCOO)<sub>6</sub>]<sup>−</sup> (M = Fe, Ni): Structure, Magnetism, and Dielectricity The five heterometallic formate frameworks [EtA]­[Ga<sup>III</sup>Fe<sup>II</sup>(HCOO)<sub>6</sub>] (<b>1</b>; EtA = CH<sub>3</sub>CH<sub>2</sub>NH<sub>3</sub><sup>+</sup>), [DMA]­[Ga<sup>III</sup>Fe<sup>II</sup>(HCOO)<sub>6</sub>] (<b>2</b>; DMA = (CH<sub>3</sub>)<sub>2</sub>NH<sub>2</sub><sup>+</sup>), [DEtA]­[Ga<sup>III</sup>Fe<sup>II</sup>(HCOO)<sub>6</sub>] (<b>3</b>; DEtA = (CH<sub>3</sub>CH<sub>2</sub>)<sub>2</sub>NH<sub>2</sub><sup>+</sup>), [MA]­[Ga<sup>III</sup>Ni<sup>II</sup>(HCOO)<sub>6</sub>] (<b>4</b>; MA = CH<sub>3</sub>NH<sub>3</sub><sup>+</sup>), and [DMA]­[Ga<sup>III</sup>Ni<sup>II</sup>(HCOO)<sub>6</sub>] (<b>5</b>) were synthesized through solvothermal methods. Complexes <b>1</b>–<b>5</b> are isotructural, and all crystallize in the trigonal <i>P</i>3̅<sub>1</sub><i>c</i> space group. Each metal center is 6-connected, with each HCOO<sup>–</sup> 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. 2 NH 2;dielectric study;Alkylamine-Templated Niccolite Frameworks;DMA;protonated amines;MA;CH 3 NH 3;niccolite-like architecture;complexes exhibit;CH 3;solvothermal methods;Fe;anti-anti mode;dielectric anomaly;CH 3 CH 2 NH 3;Ga III M II;VT;heterometallic formate frameworks;HCOO;CH 3 CH 2;metal center 2018-03-12
    https://acs.figshare.com/articles/journal_contribution/Alkylamine-Templated_Niccolite_Frameworks_of_Ga_sup_III_sup_M_sup_II_sup_HCOO_sub_6_sub_sup_sup_M_Fe_Ni_Structure_Magnetism_and_Dielectricity/5973031
10.1021/acs.inorgchem.8b00124.s001