期刊
IONICS
卷 17, 期 6, 页码 545-553出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-011-0558-y
关键词
Crystal structure; Chlorobismuthate(III); Phase transition; Infrared; Dielectric properties
Synthesis, crystal structure, and dielectric properties of [C6H4(NH3)(2)](2)ClBiCl6.H2O are reported. The compound crystallizes in the monoclinic system with space group P2(1)/n. The unit cell dimensions are a = 9.836(5), b = 19.582(5), c = 13.082(5) , beta = 104.731(5)A degrees with Z = 4. The atomic arrangement can be described by an alternation of organic and inorganic layers. The anionic layer is built up of octahedral of [BiCl6](3-) arranged in sandwich between the organic layers. The crystal packing is governed by means of the ionic N-H center dot center dot center dot Cl hydrogen bonds, forming a three-dimensional network. The dielectric properties have been investigated at temperature range from 297 to 410 K at various frequencies (10 Hz-100 kHz). Dielectric studies were performed to confirm results obtained with thermal analysis. The evolution of dielectric constant as a function of temperature and frequency of single crystal has been investigated in order to determine some related parameters.
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