| Pressure-Induced Phase Transition in N-H…O Hydrogen-Bonded Molecular Crystal Oxamide. | |
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MedLine Citation:
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PMID: 22816990 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The effect of high pressure on the structural stability of oxamide has been investigated in a diamond anvil cell by Raman spectroscopy up to ~14.6 GPa and angle-dispersive X-ray diffraction (ADXRD) up to ~17.5 GPa. The discontinuity in Raman shifts around 9.6 GPa indicates a pressure-induced structural phase transition. This phase transition is confirmed by the change of ADXRD spectra with the symmetry transformation from P-1 to P1. On total release of pressure, the diffraction pattern returns to its initial state, implying this transition is reversible. We discuss the pressure-induced variations in N-H stretching vibrations and the amide modes in Raman spectra and propose that this phase transition is attributed to the distortions of the hydrogen-bonded networks. |
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Authors:
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Tingting Yan; Shourui Li; Kai Wang; Xiao Tan; Zhangmei Jiang; Ke Yang; Bingbing Liu; Guangtian Zou; Bo Zou |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-7-20 |
Journal Detail:
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Title: The journal of physical chemistry. B Volume: - ISSN: 1520-5207 ISO Abbreviation: - Publication Date: 2012 Jul |
Date Detail:
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Created Date: 2012-7-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101157530 Medline TA: J Phys Chem B Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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