Triplet-triplet absorption of coumarin and 7-hydroxycoumarin

  • Crozet P
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Triplet-triplet absorption spectra of coumarin and 7-hydroxycoumarin in rigid alcoholic solutions at 117°K were recorded. Measurement of ground state depletion allowed the determination of the molar extinction coefficients of the triplet bands, for both compounds. CNDO/S calculations of the triplet-triplet transitions were performed and an assignment of the observed bands was attempted. © 1974.

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  • P. Crozet

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