Pressure-Induced Phase Transition in Hydrogen-Bonded Supramolecular Structure: Ammonium Formate
Kang, L; Wang, K; Li, SR; Liu, J; Yang, K; Liu, BB; Zou, B;刘景
刊名JOURNAL OF PHYSICAL CHEMISTRY C
2014
卷号118期号:16页码:8521-8530
学科分类Chemistry; Science & Technology - Other Topics; Materials Science
DOI10.1021/jp412112g
英文摘要High-pressure behaviors of hydrogen-bonded supramolecular structure, ammonium formate (NH4+COOH-, AF), have been investigated under pressure by in situ synchrotron X-ray diffraction (XRD) and Raman spectroscopy up to 20 GPa. Under ambient conditions, AF exhibits three-dimensional hydrogen-bonded networks with two molecules crystallize in a monoclinic unit cell of space group Pc. A structural phase transition can be identified at around 1.8 GPa, as indicated by the abrupt changes in Raman spectra as well as the pressure dependence of major Raman modes. Furthermore, two new N-H stretching modes emerge, indicative of the construction of new hydrogen bonds. Rearrangement of the hydrogen-bonded networks is also deduced by the obvious changes of N-H stretching modes both in position and intensity. The reversible phase transition is confirmed by in situ synchrotron XRD experiments with the emergence of a new set of diffraction pattern. The high-pressure phase is found to have a structure with a monoclinic unit cell (space group P2(1)) containing two molecules. The structural transformation is proposed to be a result of the rearrangement of the hydrogen-bonded networks. Detailed mechanism for the phase transition, high-pressure behaviors of hydrogen bonds, as well as the cooperativity of different noncovalent interactions are presented and discussed.
收录类别SCI
WOS记录号WOS:000335114200032
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被引频次:6[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/311005/225141
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 Supramolecular Structure: Ammonium Formate[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2014,118(16):8521-8530.
APA Kang, L.,Wang, K.,Li, SR.,Liu, J.,Yang, K.,...&Zou, B;刘景.(2014).Pressure-Induced Phase Transition in Hydrogen-Bonded Supramolecular Structure: Ammonium Formate.JOURNAL OF PHYSICAL CHEMISTRY C,118(16),8521-8530.
MLA Kang, L,et al."Pressure-Induced Phase Transition in Hydrogen-Bonded Supramolecular Structure: Ammonium Formate".JOURNAL OF PHYSICAL CHEMISTRY C 118.16(2014):8521-8530.
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