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Temperature controlled formation of polar copper phosphonates showing large dielectric anisotropy and a dehydration-induced switch from ferromagnetic to antiferromagnetic interactions†
Chemical Communications ( IF 4.9 ) Pub Date : 2018-05-23 00:00:00 , DOI: 10.1039/c8cc02819b
Peng-Fei Wang 1, 2, 3, 4, 5 , Song-Song Bao 1, 2, 3, 4, 5 , Xin-Da Huang 1, 2, 3, 4, 5 , T. Akutagawa 6, 7, 8, 9 , Li-Min Zheng 1, 2, 3, 4, 5
Affiliation  

The reaction of copper(II) chloride with 2-carboxyphenylphosphonic acid (2-cppH3) under hydrothermal conditions at 100 °C results in the formation of a polar compound, Cu3(2-cpp)2(H2O)5 (1), which shows large dielectric anisotropy. A similar reaction at 140 °C results in a centrosymmetric phase, Cu3(2-cpp)2(H2O)2 (2). Compound 1 can convert into 2 upon increasing the reaction temperature under hydrothermal conditions, and further to Cu3(2-cpp)2 (3) upon thermal treatment at 240 °C. This process is accompanied by a switch from ferromagnetic in 1 to antiferromagnetic interactions in 2 and 3.

中文翻译:

极性膦酸铜的温度控制形成,显示出大的介电各向异性和脱水诱导的从铁磁相互作用到反铁磁相互作用的转变

氯化铜(II)与2-羧苯基膦酸(2-cppH 3)在水热条件下于100°C的反应导致形成极性化合物Cu 3(2-cpp)2(H 2 O)51),其显示出大的介电各向异性。在140°C时,类似的反应会导致中心对称相Cu 3(2-cpp)2(H 2 O)22)。在水热条件下提高反应温度,化合物1可以转化为2,然后进一步转化为Cu 3(2-cpp)2 3)在240°C下进行热处理。该过程伴随着从1中的铁磁相互作用转换为23中的反铁磁相互作用。
更新日期:2018-05-23
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