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Excited states of isoxazole molecules studied by electron energy-loss spectroscopy

Abstrakt

Electron energy-loss spectra were measured in isoxazole in the excitation energy range 3.5−10 eV to investigate the valence excited states. Spectra recorded at different scattering conditions enabled the identification of the singlet and triplet states and the determination of their vertical excitation energies. The two lowest energy triplet bands, ππ* 13A' and ππ* 23A' at 4.20 and 5.30 eV, respectively show vibrational progressions. The first triplet state, 15a'π* 13A” that involves excitation from the nitrogen lone-pair orbital is observed at 5.68 eV. The three singlet valence states, ππ* 11A', nNπ* 11A” and ππ* 21A' are observed at 5.96, 6.49 and 6.88 eV, respectively in accord with the absorption measurements. Resonance excitation of the triplet and singlet states was noticed.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA nr 243,
ISSN: 0368-2048
Język:
angielski
Rok wydania:
2020
Opis bibliograficzny:
Linert I., Zubek M.: Excited states of isoxazole molecules studied by electron energy-loss spectroscopy// JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA -Vol. 243, (2020), s.146981-
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.elspec.2020.146981
Weryfikacja:
Politechnika Gdańska

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