单斜晶系
拉曼光谱
粉末衍射
衍射
相变
化学
半导体
结晶学
相(物质)
蒸发
带隙
分析化学(期刊)
材料科学
光学
晶体结构
凝聚态物理
光电子学
有机化学
热力学
物理
作者
I. Mbarek,M. Ben Gzaiel,A. Oueslati,M. Gargouri
标识
DOI:10.1016/j.vibspec.2022.103370
摘要
The single crystals of bi-tetrabutylphosphonium hexachlorostannate were grown by solvent evaporation method and characterized by X-ray powder diffraction, Raman spectroscopy, and optical study. The X-ray powder diffraction indicates that it was crystallized in the monoclinic system, with the C2/c space group. Besides, temperature-controlled X-ray diffraction shows that the [P(C4H9)4]2SnCl6 compound indicates the presence of two-phase transitions detected at 388 and 403 K. The evolution of Raman line shifts, “ν”, and the half-width “Δν”, versus temperature show some singularities associated with the transitions, suggesting the important role of the anionic parts ((SnCl6)2-). Besides, the results of the Raman study confirm the conclusion drawn from the X-ray powder diffraction measurements that the phase transitions are located near 388 K and 403 K. Furthermore, an optical absorption measurement confirms the semiconductor nature with a band gap equal to 3.46 eV.
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