13C NMR studies on radical anions. Special solvent effects

The determination of radical ions is crucial in mechanistic studies of reactions in which single electron transfer is suspected. A 13C NMR method based on the interaction of radical anions with tetrahydrofuran (THF) molecules is presented; measurements of the broadening of the THF α‐carbon signal al...

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Detalles Bibliográficos
Autor principal: Doctorovich, Fabio Ariel
Publicado: 1990
Materias:
Aryllithiums
Benzophenone ketyl
Electron transfer
Radical anions
Spin density transfer
Ternary ‘inner sphere’ complex
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07491581_v28_n7_p576_Doctorovich
http://hdl.handle.net/20.500.12110/paper_07491581_v28_n7_p576_Doctorovich
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_07491581_v28_n7_p576_Doctorovich
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spelling paper:paper_07491581_v28_n7_p576_Doctorovich2023-06-08T15:45:29Z 13C NMR studies on radical anions. Special solvent effects Doctorovich, Fabio Ariel Aryllithiums Benzophenone ketyl Electron transfer Radical anions Spin density transfer Ternary ‘inner sphere’ complex The determination of radical ions is crucial in mechanistic studies of reactions in which single electron transfer is suspected. A 13C NMR method based on the interaction of radical anions with tetrahydrofuran (THF) molecules is presented; measurements of the broadening of the THF α‐carbon signal allow determination of the substrate concentration in the range 0.2–1.2 M. The spectacular effect observed on addition of small amounts of benzene greatly improved the method. In addition, studies of the spin‐lattice, T1, and of the transverse nuclear, T2, relaxation times and of the effects of added co‐solvents allow the proposal of the bonding situation and of the degree of coordination in the radical anion‐cation‐THF molecules' complex. Copyright © 1990 John Wiley & Sons, Ltd. Fil:Doctorovich, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1990 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07491581_v28_n7_p576_Doctorovich http://hdl.handle.net/20.500.12110/paper_07491581_v28_n7_p576_Doctorovich
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Aryllithiums
Benzophenone ketyl
Electron transfer
Radical anions
Spin density transfer
Ternary ‘inner sphere’ complex
spellingShingle Aryllithiums
Benzophenone ketyl
Electron transfer
Radical anions
Spin density transfer
Ternary ‘inner sphere’ complex
Doctorovich, Fabio Ariel
13C NMR studies on radical anions. Special solvent effects
topic_facet Aryllithiums
Benzophenone ketyl
Electron transfer
Radical anions
Spin density transfer
Ternary ‘inner sphere’ complex
description The determination of radical ions is crucial in mechanistic studies of reactions in which single electron transfer is suspected. A 13C NMR method based on the interaction of radical anions with tetrahydrofuran (THF) molecules is presented; measurements of the broadening of the THF α‐carbon signal allow determination of the substrate concentration in the range 0.2–1.2 M. The spectacular effect observed on addition of small amounts of benzene greatly improved the method. In addition, studies of the spin‐lattice, T1, and of the transverse nuclear, T2, relaxation times and of the effects of added co‐solvents allow the proposal of the bonding situation and of the degree of coordination in the radical anion‐cation‐THF molecules' complex. Copyright © 1990 John Wiley & Sons, Ltd.
author Doctorovich, Fabio Ariel
author_facet Doctorovich, Fabio Ariel
author_sort Doctorovich, Fabio Ariel
title 13C NMR studies on radical anions. Special solvent effects
title_short 13C NMR studies on radical anions. Special solvent effects
title_full 13C NMR studies on radical anions. Special solvent effects
title_fullStr 13C NMR studies on radical anions. Special solvent effects
title_full_unstemmed 13C NMR studies on radical anions. Special solvent effects
title_sort 13c nmr studies on radical anions. special solvent effects
publishDate 1990
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07491581_v28_n7_p576_Doctorovich
http://hdl.handle.net/20.500.12110/paper_07491581_v28_n7_p576_Doctorovich
work_keys_str_mv AT doctorovichfabioariel 13cnmrstudiesonradicalanionsspecialsolventeffects
_version_ 1768546680678907904

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