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Time-resolved Raman observation of the aqueous O3−

✍ Scribed by Yali Su; G.N.R. Tripathi

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
472 KB
Volume
188
Category
Article
ISSN
0009-2614

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✦ Synopsis

A Raman study of the O-+ O2-,O5-reaction in aqueous solution is reported. The reaction half-period was measured as ~ 200 ns in oxygen saturated solution at room temperature. Spectroscopic evidence for the 03-solvent coupled vibrations has been found. The harmonic frequency (cue) of the O~-symmetric stretch in aqueous solution, 1058 cm-t, is 30-40 cm ~ higher, and the anharmonicity constant (to e x~), 9 +_ 2 cm-t, about twice as large as compared to the 03 inbedded in crystalline matrices or bonded to a counter ion. The O5-~20+O-dissociation energy is drastically lowered on hydration.

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