Synthesis and characterization of methylammonium tetrachlorocuprate (II) dihydrate crystals

被引：10

作者：

Amirthaganesan, G. ^{[1
]}

Kandhaswamy, M. A. ^{[1
]}

Dhandapani, M. ^{[1
]}

机构：

[1] Sri Ramakrishna Mission Vidyalaya Coll Arts & Sci, Coimbatore 641020, Tamil Nadu, India

来源：

CRYSTAL RESEARCH AND TECHNOLOGY | 2007年 / 42卷 / 07期

关键词：

crystal growth; thermal studies; phase transitions; FTIR spectra;

D O I：

10.1002/crat.200610889

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Single crystals of methylammonium tetrachlorocuprate (II) dihydrate were obtained by slow evaporation method at room temperature. The crystals were characterized through powder XRD, thermogravimetric (TG-DTA), low temperature DSC studies and FTIR and far IR spectra. While the powder XRD confirms the crystallinity of the compound, the TG and DTA studies confirm the formation of the compound in the stoichiometric ratio and the presence of two water molecules of crystallization. The low temperature DSC study indicates a thermal anomaly at -3 degrees C. The ordering of CH3NH3 group at low temperature causes phase transitions in the compound. The IR spectra characterize the various chemical bonding and water molecules in the compound. Laser Raman spectral studies under progress would help understand the mechanism of phase transitions at low temperatures. (C) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：684 / 687

页数：4

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