Fürderer, Peter ; Gerson, Fabian ; Hafner, Klaus (1978)
Radical Ions in the Pentalene Series. Part. I. 1,3,5-tri-t-butylpentalene.
In: Helvetica Chimica Acta, 61 (8)
doi: 10.1002/hlca.19780610822
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
The ESR. spectra of the radical anion and cation of 1, 3, 5-tri-t-butylpentalene (II) have been reexamined under higher resolution. With the assistance of the ENDOR. technique, the coupling constants of all protons in II⁻. and II⁺. could be determined. The experimental data agree satisfactorily with the values predicted by the simple MO model which suggests that the π-spin distributions in II⁻. and II⁺. should not strongly differ from those in the corresponding radical ions of parent pentalene (I). As in the case of other non-alternant hydrocarbons, the proton coupling constants for II⁻. are very sensitive to experimental conditions, due to the association of the radical anion with its counterion. Spectra of II⁻. taken at low temperatures (down to 133 and 163 K for ESR. and ENDOR., respectively) have not revealed specific line-broadening which could arise from the bond shift between the two Kekulé-structures of pentalene.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 1978 |
| Autor(en): | Fürderer, Peter ; Gerson, Fabian ; Hafner, Klaus |
| Art des Eintrags: | Bibliographie |
| Titel: | Radical Ions in the Pentalene Series. Part. I. 1,3,5-tri-t-butylpentalene |
| Sprache: | Englisch |
| Publikationsjahr: | 1978 |
| Ort: | Darmstadt |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Helvetica Chimica Acta |
| Jahrgang/Volume einer Zeitschrift: | 61 |
| (Heft-)Nummer: | 8 |
| DOI: | 10.1002/hlca.19780610822 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | The ESR. spectra of the radical anion and cation of 1, 3, 5-tri-t-butylpentalene (II) have been reexamined under higher resolution. With the assistance of the ENDOR. technique, the coupling constants of all protons in II⁻. and II⁺. could be determined. The experimental data agree satisfactorily with the values predicted by the simple MO model which suggests that the π-spin distributions in II⁻. and II⁺. should not strongly differ from those in the corresponding radical ions of parent pentalene (I). As in the case of other non-alternant hydrocarbons, the proton coupling constants for II⁻. are very sensitive to experimental conditions, due to the association of the radical anion with its counterion. Spectra of II⁻. taken at low temperatures (down to 133 and 163 K for ESR. and ENDOR., respectively) have not revealed specific line-broadening which could arise from the bond shift between the two Kekulé-structures of pentalene. |
| Zusätzliche Informationen: | Auf Verlagsseite steht statt Fabian Gerson "Fabina" Gerson |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Clemens-Schöpf-Institut 07 Fachbereich Chemie > Clemens-Schöpf-Institut > Fachgebiet Organische Chemie |
| Hinterlegungsdatum: | 02 Aug 2024 12:45 |
| Letzte Änderung: | 23 Sep 2024 06:16 |
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Radical Ions in the Pentalene Series. Part. I. 1,3,5-tri-t-butylpentalene. (deposited 28 Nov 2022 09:19)
- Radical Ions in the Pentalene Series. Part. I. 1,3,5-tri-t-butylpentalene. (deposited 02 Aug 2024 12:45) [Gegenwärtig angezeigt]
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