质子化乙脒模板的钙钛矿型甲酸盐框架的合成及温度依赖性研究。
Synthesis and temperature-dependent studies of a perovskite-like manganese formate framework templated with protonated acetamidine.
机构信息
Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Box 1410, 50-950 Wrocław 2, Poland.
Department of Experimental Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland.
出版信息
Dalton Trans. 2017 Jul 4;46(26):8476-8485. doi: 10.1039/c7dt01251a.
We report the synthesis, crystal structure, thermal, dielectric, phonon and magnetic properties of the [CHC(NH)][Mn(HCOO)] (AceMn) compound. Our results show that this compound crystallizes in the perovskite-like orthorhombic structure, space group Imma. It undergoes a structural phase transition at 304 K into a monoclinic structure, space group P2/n. X-ray diffraction, dielectric, IR and Raman studies show that the ordering of the acetamidinium cations triggers the phase transition. Low-temperature magnetic studies show that this compound exhibits weak ferromagnetic properties below 9.0 K.
我们报告了 [CHC(NH)][Mn(HCOO)]（AceMn）化合物的合成、晶体结构、热学、介电、声子和磁性性质。我们的结果表明，该化合物结晶为类钙钛矿的正交相结构，空间群为 Imma。它在 304 K 经历了一个结构相变，变成了单斜相结构，空间群为 P2/n。X 射线衍射、介电、IR 和拉曼研究表明，乙酰胺阳离子的有序排列引发了相变。低温磁性研究表明，该化合物在 9.0 K 以下表现出弱铁磁性。
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