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Spectres de diffusion Raman et structure des monocristaux de Mg(H 2 PO 2 ) 2 6H 2 O et Co (H 2 PO 2 ) 2 6H 2 O
Author(s) -
Abénoza Michel,
Martin Louis
Publication year - 1975
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.1250040207
Subject(s) - raman spectroscopy , chemistry , crystal structure , crystallography , crystal (programming language) , single crystal , diffusion , analytical chemistry (journal) , physics , optics , thermodynamics , chromatography , computer science , programming language
Single crystal Raman spectra of Mg (H 2 PO 2 ) 2 6 H 2 O, Mg (H 2 PO 2 ) 2 and Co (H 2 PO 2 ) 2 6 H 2 O) were recorded. A complete assignment of the bands to the zero wave vectors modes is proposed. The comparison between calculated and experimental Raman intensities shows the individuality of the H 2 PO 2 −ions in the crystal. Various structure hypotheses are discussed: only the Lopez de Lerma's hypothesis and the 4 site symmetry for the magnesium (or cobalt) atom are compatible with the Raman spectra data of the three single crystals.