Temperature controlled formation of polar copper phosphonates showing large dielectric anisotropy and a dehydration-induced switch from ferromagnetic to antiferromagnetic interactions

Chemical Communications : Chem Comm
Peng-Fei WangLi-Min Zheng

Abstract

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.

References

May 1, 1993·Molecular Microbiology·D Kahn
Aug 7, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Jin-Tang LiLi-Min Zheng
Jan 7, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Peng-Fei WangLi-Min Zheng
Apr 1, 2011·Chemical Society Reviews·Cyrille TrainMichel Verdaguer
Aug 30, 2011·Journal of the American Chemical Society·Guan-Cheng XuSong Gao
Sep 24, 2011·Chemical Reviews·Wen Zhang, Ren-Gen Xiong
Aug 7, 2012·Chemistry : a European Journal·Jian HuangLi-Min Zheng
Oct 11, 2017·Journal of the American Chemical Society·Zhao PanXianran Xing

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Citations

Nov 16, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Ge-Hua WenLi-Min Zheng

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