Pressure-induced isosymmetric phase transition in sulfamic acid: A combined Raman and x-ray diffraction study

	Pressure-induced isosymmetric phase transition in sulfamic acid: A combined Raman and x-ray diffraction study
	Li, Q; Li, SR; Wang, K; Li, XD; Liu, J; Liu, BB; Zou, GT; Zou, B;李晓东; Liu J(刘景)
刊名	JOURNAL OF CHEMICAL PHYSICS
	2013
卷号	138 期号:21 页码:214505
英文摘要	High-pressure behaviors of hydrogen-bonded molecular crystal, sulfamic acid (NH3+SO3-, SA), have been investigated using Raman spectroscopy and synchrotron X-ray diffraction (XRD) techniques up to the pressure of similar to 20 GPa. Under ambient conditions, molecules of SA are arranged in puckered layers and held together by hydrogen bonding and electrostatic interactions. It is proved by the Raman results that SA undergoes the molecular conformation changes in the pressure range 8.1-10.2 GPa. Then between 10.2 and 12.7 GPa, a phase transition is observed in both Raman and XRD patterns. Both the ambient and high-pressure phases of SA crystallize in Pbca symmetry with similar unit-cell dimensions. The mechanism of the phase transition involves relative movements of adjacent hydrogen-bonded molecules, accompanied by the rearrangement of hydrogen bonds and the enhancement of electrostatic interactions. (C) 2013 AIP Publishing LLC.
学科主题	Physics
收录类别	SCI
WOS记录号	WOS:000320138900037
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224674]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Li, Q,Li, SR,Wang, K,et al. Pressure-induced isosymmetric phase transition in sulfamic acid: A combined Raman and x-ray diffraction study[J]. JOURNAL OF CHEMICAL PHYSICS,2013,138(21):214505.
APA	Li, Q.,Li, SR.,Wang, K.,Li, XD.,Liu, J.,...&刘景.(2013).Pressure-induced isosymmetric phase transition in sulfamic acid: A combined Raman and x-ray diffraction study.JOURNAL OF CHEMICAL PHYSICS,138(21),214505.
MLA	Li, Q,et al."Pressure-induced isosymmetric phase transition in sulfamic acid: A combined Raman and x-ray diffraction study".JOURNAL OF CHEMICAL PHYSICS 138.21(2013):214505.