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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)
2015
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume5Issue:103Pages:84703-84710
SubtypeArticle
AbstractThe 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.
Subject AreaChemistry
DOI10.1039/c5ra17223c
Indexed BySCI ; ADS ; EI
Language英语
WOS Research AreaChemistry, Multidisciplinary
WOS SubjectChemistry
WOS IDWOS:000362851000046
ADS Bibcode2015RSCAd...584703K
ADS URLhttps://ui.adsabs.harvard.edu/abs/2015RSCAd...584703K
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2015RSCAd...584703K/citations
Citation statistics
Cited Times:3 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/228783
Collection多学科研究中心
Recommended Citation
GB/T 7714
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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