Solvent effect on reductive bond cleavage of 1-chloro-10-methyltribenzotriquinacene: Change from the concerted to the stepwise mechanism

Jaworski JS, Cembor M, Kuck D (2007)
ELECTROCHIMICA ACTA 52(5): 2196-2202.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
Electrochemical reduction of 1-chloro-10-methyltribenzotriquinacene in benzonitrile, acetonitrile and NN-dimethylformamide (DNIF) is compared. A two-electron DISP1 mechanism was found in C6H5CN at glassy carbon and mercury electrodes with C-Cl bond cleavage as the rate determining step. In CH3CN and DNIF the hydrogen atom abstraction from solvent molecules by a radical formed in bond cleavage results in the one-electron process. In the above-mentioned solvents an analysis of a potential dependence of the transfer coefficient, obtained from convoluted voltammetric curves at mercury electrode, showed the concerted mechanism. A change from the stepwise process in C6H5CN to the concerted one in CH3CN and DNIF is explained by acceleration of bond cleavage in the radical anion due to stronger solvation of product chloride anions by CH3CN and DMF. (c) 2006 Elsevier Ltd. All rights reserved.
Erscheinungsjahr
Zeitschriftentitel
ELECTROCHIMICA ACTA
Band
52
Zeitschriftennummer
5
Seite
2196-2202
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Jaworski JS, Cembor M, Kuck D. Solvent effect on reductive bond cleavage of 1-chloro-10-methyltribenzotriquinacene: Change from the concerted to the stepwise mechanism. ELECTROCHIMICA ACTA. 2007;52(5):2196-2202.
Jaworski, J. S., Cembor, M., & Kuck, D. (2007). Solvent effect on reductive bond cleavage of 1-chloro-10-methyltribenzotriquinacene: Change from the concerted to the stepwise mechanism. ELECTROCHIMICA ACTA, 52(5), 2196-2202. doi:10.1016/j.electacta.2006.08.036
Jaworski, J. S., Cembor, M., and Kuck, D. (2007). Solvent effect on reductive bond cleavage of 1-chloro-10-methyltribenzotriquinacene: Change from the concerted to the stepwise mechanism. ELECTROCHIMICA ACTA 52, 2196-2202.
Jaworski, J.S., Cembor, M., & Kuck, D., 2007. Solvent effect on reductive bond cleavage of 1-chloro-10-methyltribenzotriquinacene: Change from the concerted to the stepwise mechanism. ELECTROCHIMICA ACTA, 52(5), p 2196-2202.
J.S. Jaworski, M. Cembor, and D. Kuck, “Solvent effect on reductive bond cleavage of 1-chloro-10-methyltribenzotriquinacene: Change from the concerted to the stepwise mechanism”, ELECTROCHIMICA ACTA, vol. 52, 2007, pp. 2196-2202.
Jaworski, J.S., Cembor, M., Kuck, D.: Solvent effect on reductive bond cleavage of 1-chloro-10-methyltribenzotriquinacene: Change from the concerted to the stepwise mechanism. ELECTROCHIMICA ACTA. 52, 2196-2202 (2007).
Jaworski, Jan S., Cembor, Marek, and Kuck, Dietmar. “Solvent effect on reductive bond cleavage of 1-chloro-10-methyltribenzotriquinacene: Change from the concerted to the stepwise mechanism”. ELECTROCHIMICA ACTA 52.5 (2007): 2196-2202.