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Abstract:

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.

Registro:

Documento: Artículo
Título:13C NMR studies on radical anions. Special solvent effects
Autor:Doctorovich, F.; Nudelman, N.S.
Filiación:Departamento Quimica Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellon II, P. 3, Buenos Aires, 1428, Argentina
Palabras clave:Aryllithiums; Benzophenone ketyl; Electron transfer; Radical anions; Spin density transfer; Ternary ‘inner sphere’ complex
Año:1990
Volumen:28
Número:7
Página de inicio:576
Página de fin:579
DOI: http://dx.doi.org/10.1002/mrc.1260280704
Título revista:Magnetic Resonance in Chemistry
Título revista abreviado:Magn. Reson. Chem.
ISSN:07491581
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07491581_v28_n7_p576_Doctorovich

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Citas:

---------- APA ----------
Doctorovich, F. & Nudelman, N.S. (1990) . 13C NMR studies on radical anions. Special solvent effects. Magnetic Resonance in Chemistry, 28(7), 576-579.
http://dx.doi.org/10.1002/mrc.1260280704
---------- CHICAGO ----------
Doctorovich, F., Nudelman, N.S. "13C NMR studies on radical anions. Special solvent effects" . Magnetic Resonance in Chemistry 28, no. 7 (1990) : 576-579.
http://dx.doi.org/10.1002/mrc.1260280704
---------- MLA ----------
Doctorovich, F., Nudelman, N.S. "13C NMR studies on radical anions. Special solvent effects" . Magnetic Resonance in Chemistry, vol. 28, no. 7, 1990, pp. 576-579.
http://dx.doi.org/10.1002/mrc.1260280704
---------- VANCOUVER ----------
Doctorovich, F., Nudelman, N.S. 13C NMR studies on radical anions. Special solvent effects. Magn. Reson. Chem. 1990;28(7):576-579.
http://dx.doi.org/10.1002/mrc.1260280704