Bulletin of the Chemical Society of Japan · 1962 · 35 citations · 13 references
Natural SciencesChemistryOrganic ChemistrySpectroscopic AnalysisSpectroscopyAbsorption SpectroscopyMolecular SpectroscopyOptical SpectroscopyUltraviolet-visible SpectroscopyAbsorption Band AssignmentAbsorption SpectraMolecular Absorption LinesMolecular ChromophoresSolvent Effects On Absorption SpectraSpectral Absorption BandsTemperature Dependence Of Absorption Spectra
Abstract The very weak absorption bands at the long wavelength sides of the n→π* singlet-singlet absorption bands of p-benzoquinone and its derivatives were examined with regard to the solvent effect, the substitution effect and the temperature - dependency. From the obtained results, this absorption band is reasonably assigned to the n→π* singlet-triplet absorption band. As for its absorption curve, a distinct difference between the structure where the two carbonyl groups of p-benzoquinone are equivalent and that where the two carbonyl groups are not equivalent is observed.
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