Resonance Raman Spectra of the Transient Cl2 and Br2 Radical Anions

Robert Walter Wilbrandt, Niels-Henrik Jensen, Alfred Hegaard Sillesen, Knud Bent Hansen

    Research output: Contribution to journalJournal articleResearchpeer-review


    The resonance Raman spectra of the short-lived radical anions ClImage 2− and BrImage − in aqueous solution are reported. The observed wavenumbers of 279 cm−1 for ClImage − and 177 cm−1 for BrImage − are about 10% higher than those published for the corresponding species isolated in solid argon matrices. Under the assumption of a Morse potential. harmonic frequencies and anharmonicity constants are calculated to be 286.4 and 3.83 cm−1 for ClImage − and 187.2 and 5.17 cm−1 for BrImage −. These values lead to extrapolated dissociation energies of 0.66 and 0.21 eV, respectively. These results are compared with those from matrix-isolation studies at low temperatures and work in the gas phase.
    Original languageEnglish
    JournalChemical Physics Letters
    Issue number6
    Pages (from-to)503 -507
    Publication statusPublished - 1984


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