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Single‐crystal Raman studies on Sr(ClO 3 ) 2 and BrO 3 − and IO 3 − ions matrix isolated in Sr(ClO 3 ) 2
Author(s) -
Lutz H. D.,
Alici E.,
Kellersohn Th.
Publication year - 1990
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.1250210702
Subject(s) - raman spectroscopy , ion , chemistry , isostructural , analytical chemistry (journal) , infrared spectroscopy , crystallography , single crystal , crystal structure , ionic bonding , crystal (programming language) , infrared , physics , optics , programming language , organic chemistry , computer science , chromatography
Single‐crystal Raman spectra of Sr(ClO 3 ) 2 and Sr(ClO 3 ) 2 crystals with matrix isolated BrO 3 − and IO 3 − guest ions are presented and discussed in terms of TO/LO splitting and distortion of the XO 3 − ions. Because of the large distortion of these ions in the structure (site symmetry C 1 ), no intra‐ionic vibrational coupling of the XO vibrations to symmetric (ν 1 ) and asymmetric (ν 3 ) stretching modes occurs. This is proved by oriented gas model calculations of the intensities of the guest ion Raman bands. The infrared and Raman spectra of polycrystalline samples of the isostructural compounds Ba(ClO 3 ) 2 , Ba(BrO 3 ) 2 II, Pb(ClO 3 ) 2 and Pb(BrO 3 ) 2 are also reported.