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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; kaiwang@jlu.edu.cn; zoubo@jlu.edu.cn
2014
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
Volume118Issue:16Pages:8521—8530
AbstractHigh-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.
KeywordRaman-spectroscopy Crystal-structure Single-crystals Formic-acid Amino-acids Chemistry Temperature Halides Pentaerythritol Hexahydro-1 3 5-trinitro-1 3 5-triazine
Indexed BySCI
Language英语
WOS IDWOS:000335114200032
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/14328
Collection中科院上海应用物理研究所2011-2019年
Corresponding Authorkaiwang@jlu.edu.cn; zoubo@jlu.edu.cn
Recommended Citation
GB/T 7714
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.,...&zoubo@jlu.edu.cn.(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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