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  Electronic Excitation Energies, Three-State Intersections, and Photodissociation Mechanisms of Benzaldehyde and Acetophenone

Cui, G., Lu, Y., & Thiel, W. (2012). Electronic Excitation Energies, Three-State Intersections, and Photodissociation Mechanisms of Benzaldehyde and Acetophenone. Chemical Physics Letters, 537, 21-26. doi:10.1016/j.cplett.2012.04.008.

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 Urheber:
Cui, Ganglong1, Autor           
Lu, You1, Autor           
Thiel, Walter1, Autor           
Affiliations:
1Research Department Thiel, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445590              

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 Zusammenfassung: We report a theoretical study on the electronically excited states and the mechanisms of photodissociation of C6H5CHO and C6H5COCH3. For both molecules, we find an S1/T2/T1 three-state intersection region, which allows for an efficient S1 → T1 intersystem crossing via the T2 state that acts as a relay. Consequently, T1 reactions become the major radical photodissociation channels. According to the computed energy profiles, T1 photodissociation mainly yields phenyl and formyl radicals in the case of benzaldehyde, and benzoyl and methyl radicals in the case of acetophenone, with different C–C bonds being cleaved preferentially. The computational results agree well with the available experimental data.

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Sprache(n): eng - English
 Datum: 2012-06-01
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1016/j.cplett.2012.04.008
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Titel: Chemical Physics Letters
  Andere : Chem. Phys. Lett.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 537 Artikelnummer: - Start- / Endseite: 21 - 26 Identifikator: ISSN: 0009-2614
CoNE: https://pure.mpg.de/cone/journals/resource/954925389241
DOI: 10.1016/j.cplett.2012.04.008