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Normal coordinate analysis of the Raman and infrared vibrations of the alpha phases of RE 2 O 3 (RELa, Pr, Nd) and RE 2 O 2 S (RELa and Yb)
Author(s) -
Gopinath C. R.,
Brown I. D.
Publication year - 1982
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.1250120315
Subject(s) - force constant , raman spectroscopy , infrared , chemistry , metal , force field (fiction) , analytical chemistry (journal) , vibration , physics , molecule , optics , quantum mechanics , organic chemistry , chromatography
A normal coordinate analysis of the spectra of the title compounds shows that they can be matched with a 6 force field. Metal‐O(S) force constants correlate approximately with bond length and range from 0.2 to 1.8 mdynes Å −1 . OO(S) force constants are less than 0.1 mdynes Å −1 but for a satisfactory fit a metal‐metal force constant of 0.5 mdynes Å −1 must be introduced. The infrared spectrum of Pr 2 O 3 is reported for the first time.