Pressure-induced phase transition in hydrogen-bonded molecular crystal acetamide: combined Raman scattering and X-ray diffraction study
Kang, L; Wang, K; Li, SR; Li, XD; Zou, B; Li XD(李晓东)
刊名RSC ADVANCES
2015
卷号5期号:103页码:84703-84710
学科分类Chemistry
DOI10.1039/c5ra17223c
文章类型Article
英文摘要The structural and vibrational properties of acetamide under high pressure were probed by in situ synchrotron X-ray diffraction (XRD) and Raman scattering up to similar to 10 GPa. Two structural phase transitions are observed at 0.9 and 3.2 GPa, evidenced by the obvious changes in the Raman spectra as well as the discontinuities of peak positions versus pressure. The phase transitions are further confirmed by the significant changes in the XRD patterns. The two phase transitions are proposed to originate from the rearrangements of hydrogen-bonded networks, deduced by the redistribution of intensities and positions of N-H vibrations. Detailed analysis of the XRD patterns indicates that the first high-pressure phase (phase II) possesses a monoclinic structure with a possible space group of C2/c. Moreover, the phase transitions are reversible since the diffraction pattern returns to its initial state upon total decompression. The detailed mechanisms for these phase transitions, the cooperativity of different intermolecular interactions, as well as the high-pressure behaviors of hydrogen bonds are presented and discussed.
类目[WOS]Chemistry, Multidisciplinary
收录类别SCI ; EI
WOS记录号WOS:000362851000046
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228783
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
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Kang, L,Wang, K,Li, SR,et al. Pressure-induced phase transition in hydrogen-bonded molecular crystal acetamide: combined Raman scattering and X-ray diffraction study[J]. RSC ADVANCES,2015,5(103):84703-84710.
APA Kang, L,Wang, K,Li, SR,Li, XD,Zou, B,&李晓东.(2015).Pressure-induced phase transition in hydrogen-bonded molecular crystal acetamide: combined Raman scattering and X-ray diffraction study.RSC ADVANCES,5(103),84703-84710.
MLA Kang, L,et al."Pressure-induced phase transition in hydrogen-bonded molecular crystal acetamide: combined Raman scattering and X-ray diffraction study".RSC ADVANCES 5.103(2015):84703-84710.
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