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The hydrogen‐bond effect on the high pressure behavior of hydrazinium monochloride
Author(s) -
Jiang Shuqing,
Duan Defang,
Li Fangfei,
Huang Xiaoli,
Yang Xue,
Li Wenbo,
Huang Yanping,
Bao Kuo,
Zhou Qiang,
Liu Bingbing,
Cui Tian
Publication year - 2015
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.4623
Subject(s) - raman spectroscopy , chemistry , diamond anvil cell , phase transition , hydrogen bond , crystallography , ion , hydrogen , rietveld refinement , x ray crystallography , diffraction , phase (matter) , analytical chemistry (journal) , crystal structure , molecule , thermodynamics , physics , organic chemistry , optics , chromatography
The first high pressure study of solid hydrazinium monochloride has been performed by in situ Raman spectroscopy and synchrotron X‐ray diffraction (XRD) experiments in diamond anvil cell (DAC) up to 39.5 and 24.6 GPa, respectively. The structure of phase I at room temperature is confirmed to be space group C 2/ c by the Raman spectral analysis and Rietveld refinement of the XRD pattern. A structural transition from phase I to II is observed at 7.3 GPa. Pressure‐induced position variation of hydrogen atoms in NH 3 + unit during the phase transition is attributed to the formation of N―H…Cl hydrogen‐bonds, which play a vital role in the stability and subsequent structural changes of this high energetic material under pressure. This inference is proved from the abnormal pressure shifts and obvious Fermi resonance in NH stretching mode of N 2 H 5 + ion in the Raman experiment. Finally, a further transition from phase II to III accompanied with a slight internal distortion in the N 2 H 5 + ions occurs above 19.8 GPa, and phase III persists up to 39.5 GPa. Copyright © 2015 John Wiley & Sons, Ltd.