Sequential dielectric phase transitions induced by the vibrations of water molecules in an organic–inorganic hybrid halide (N-(2-ammoniumethyl)piperazinium) CuCl5·2H2O

Zhongxia Wang; Yang Lu; Zainab Zafar; Yu-Ling Liu; Hai-Peng Chen; Jia-Zhen Ge

doi:10.1039/C7DT01378G

Sequential dielectric phase transitions induced by the vibrations of water molecules in an organic–inorganic hybrid halide (N-(2-ammoniumethyl)piperazinium) CuCl₅·2H₂O

Zhongxia Wang,^a Yang Lu,^a Zainab Zafar,^a Yu-Ling Liu,^a Hai-Peng Chen^a and Jia-Zhen Ge*^a

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* Corresponding authors

^a Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, College of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
E-mail: gjz@seu.edu.cn

Abstract

Organic–inorganic hybrids represent a new type of material showing promising properties. In this report, sequential dielectric transitions have been studied in an organic–inorganic hybrid halide, (N-2-AP)CuCl₅·2H₂O (N-2-AP = N-(2-ammoniumethyl)piperazinium) (1). The packing structure of 1 displays discrete [CuCl₅]³⁻ rectangular pyramids and N-2-AP cations, which are linked by two water molecules, forming infinite hydrogen bond networks with inorganic and organic components along the b-axis. Characterization studies containing differential scanning calorimetry (DSC) measurements, variable-temperature X-ray diffraction and dielectric measurements were performed to investigate the phase transitions in 1. The deuterated sample of 1 (named 2) also exhibits a similar behavior to that in 1, but shows different phase transition temperatures in dielectric transitions. The arresting deuterated effect strongly confirms that the phase transitions in 1 are attributable to the local vibrations of water molecules resulting from the variation of hydrogen-bonding interactions.

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Publication details

The article was received on 15 Apr 2017, accepted on 16 Jul 2017 and first published on 17 Jul 2017

Article type: Paper

DOI: 10.1039/C7DT01378G

Citation: Dalton Trans., 2017,46, 10462-10468

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Sequential dielectric phase transitions induced by the vibrations of water molecules in an organic–inorganic hybrid halide (N-(2-ammoniumethyl)piperazinium) CuCl₅·2H₂O

Z. Wang, Y. Lu, Z. Zafar, Y. Liu, H. Chen and J. Ge, Dalton Trans., 2017, 46, 10462
DOI: 10.1039/C7DT01378G
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Dalton Transactions

Sequential dielectric phase transitions induced by the vibrations of water molecules in an organic–inorganic hybrid halide (N-(2-ammoniumethyl)piperazinium) CuCl₅·2H₂O

Abstract

Supplementary files

Publication details

Sequential dielectric phase transitions induced by the vibrations of water molecules in an organic–inorganic hybrid halide (N-(2-ammoniumethyl)piperazinium) CuCl₅·2H₂O

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