Raman scattering from the peroxide ion in Cs 2 O 2 | Zendy

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Raman scattering from the peroxide ion in Cs 2 O 2

Author(s) -

Livneh Tsachi,

Band Alisa,

Tenne Reshef

Publication year - 2002

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.900

Subject(s) - anharmonicity , wavenumber , raman spectroscopy , raman scattering , ion , excited state , chemistry , analytical chemistry (journal) , peroxide , curvature , atomic physics , physics , optics , condensed matter physics , geometry , mathematics , organic chemistry , chromatography

The Raman spectrum of Cs 2 O 2 excited at 632.8 nm shows a single O 2 −2 fundamental band at wavenumber of 742.5 cm −1 and second and third overtones at 1468.5 and 2176.8 cm −1 , respectively. The harmonic wavenumber ω e = 759.5 ± 0.7 cm −1 and anharmonicity constant ω e x e = 8.4 ± 0.3 cm −1 were calculated directly from the measurements. These results are compared with ω e = 1151.0 ± 1.5 cm −1 and ω e x e = 9.6 ± 0.5 cm −1 recently found for O 2 − ion in CsO 2 by others. The lower ω e x e of O 2 −2 relative to that of O 2 − indicates a broader (smaller curvature) anharmonic oscillator potential well. Copyright © 2002 John Wiley & Sons, Ltd.

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