Fürderer, Peter ; Gerson, Fabina ; Hafner, Klaus (2022)
Radical Ions in the Pentalene Series. Part. I. 1,3,5-tri-t-butylpentalene.
In: Helvetica Chimica Acta, 61 (8)
doi: 10.26083/tuprints-00022407
Artikel, Zweitveröffentlichung, Verlagsversion
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: | 2022 |
| Autor(en): | Fürderer, Peter ; Gerson, Fabina ; Hafner, Klaus |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Radical Ions in the Pentalene Series. Part. I. 1,3,5-tri-t-butylpentalene |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Ort: | Darmstadt |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Helvetica Chimica Acta |
| Jahrgang/Volume einer Zeitschrift: | 61 |
| (Heft-)Nummer: | 8 |
| DOI: | 10.26083/tuprints-00022407 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/22407 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichungsservice |
| 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. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-224072 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Clemens-Schöpf-Institut > Fachgebiet Organische Chemie |
| Hinterlegungsdatum: | 28 Nov 2022 09:19 |
| Letzte Änderung: | 29 Nov 2022 06:24 |
| PPN: | |
| Zugehörige Links: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum