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Structural phase transitions and Raman spectra of pyridinium perrhenate at high pressures
- Source :
-
Journal of Molecular Structure . Mar2009, Vol. 921 Issue 1-3, p68-71. 4p. - Publication Year :
- 2009
-
Abstract
- Abstract: The crystal structure and vibrational spectra of deuterated pyridinium perrhenate (d5PyH)ReO4 (C5D5NHReO4) have been studied by means of X-ray diffraction and Raman spectroscopy at high pressures up to 15 and 9.5GPa, respectively. Two phase transitions, from orthorhombic phase II with Cmc21 symmetry to phase I with Cmcm symmetry at P =0.7GPa and to new monoclinic phase IV with P21 symmetry at P =5GPa were observed. The internal vibrational modes frequencies, lattice parameters and unit cell volume as functions of pressure were obtained for different phases. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00222860
- Volume :
- 921
- Issue :
- 1-3
- Database :
- Academic Search Index
- Journal :
- Journal of Molecular Structure
- Publication Type :
- Academic Journal
- Accession number :
- 36779836
- Full Text :
- https://doi.org/10.1016/j.molstruc.2008.12.034