Electron Transfer Reactions of Singlet and Triplet Pyrene in Micelles with Various Radical Anions in Aqueous Solution

An investigation of electron attachment reactions of cluster metal carbonyls is presented. In general, alkyl and organometallic halides react rapidly with metal carbonyl cluster radical anions at ambient temperatures to give the neutral cluster molecule. Halide ion and alkyl or organometallic radicals are also produced, which indicate that these are dissociative electron attachment reactions analogous to those of organic radical anions. The rate of dissociative electron attachment in reactions of PhCCo3(CO)9- was found to depend on the R-X bond energy, the size of the alkyl group and the nature of the counter-ion. In particular, (Ph3P)2N+ retarded some electron transfer reactions to the extent that the bimolecular decay of PhCCo3(CO)9- effectively competed with the electron transfer process in determining the reaction path.

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Temperature dependence of excited-state electron-transfer reactions. Quenching of RuL32+ emission by copper(II) and europium(III) in aqueous solution

The Journal of Physical Chemistry ◽

10.1021/j100460a008 ◽

1980 ◽

Vol 84 (23) ◽

pp. 3012-3019 ◽

Cited By ~ 17

Author(s):

J. E. Baggott ◽

M. J. Pilling

Keyword(s):

Aqueous Solution ◽

Electron Transfer ◽

Excited State ◽

Temperature Dependence ◽

Transfer Reactions ◽

Electron Transfer Reactions ◽

State Electron

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The Reaction of the Hydrated Electron with Amino Acids, Peptides, and Proteins in Aqueous Solution: II. Formation of Radicals and Electron Transfer Reactions

Radiation Research ◽

10.2307/3574226 ◽

1975 ◽

Vol 62 (2) ◽

pp. 347 ◽

Cited By ~ 26

Author(s):

M. Faraggi ◽

Y. Tal

Keyword(s):

Aqueous Solution ◽

Amino Acids ◽

Electron Transfer ◽

Hydrated Electron ◽

Transfer Reactions ◽

Electron Transfer Reactions

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Electron transfer reactions. Reaction of nitrones with potassium

Canadian Journal of Chemistry ◽

10.1139/v87-339 ◽

1987 ◽

Vol 65 (9) ◽

pp. 2039-2049 ◽

Cited By ~ 5

Author(s):

Konda Ashok ◽

Pallikkaparambil M. Scaria ◽

Prashant V. Kamat ◽

Manapurathu V. George

Keyword(s):

Electron Transfer ◽

Transfer Reactions ◽

Radical Anions ◽

Cyclic Voltammetric ◽

Electron Transfer Reactions ◽

Reduction Potentials ◽

Dimeric Product ◽

Voltammetric Studies ◽

Electron Transfer Processes ◽

Cyclic Voltammetric Studies

Treatment of nitrones (1a–d, 26a,b, 34, 49) with potassium in tetrahydrofuran (THF) gives rise to radical anion (2a–d, 27a,b, 35, 50) and dianion intermediates (3a–d, 28a,b, 36) through electron transfer reactions. These intermediates undergo further transformations to give a variety of products. Thus, the aldehydonitrones (1a–d) give the corresponding aldehydes (10a–c), carboxylic acids (25a–c), and azobenzenes (19a,d), whereas the ketonitrones (26a,b) give deoxygenation products (31a,b). The nitrone 34 gave a mixture of products consisting of benzoic acid (25a), dibenzyl (48), the dimeric product 38, and tetraphenylpyrazine (46), whereas 49 did not give any isolable product. Cyclic voltammetric studies have been employed to measure the reduction potentials for both one-electron and two-electron transfer processes, leading to the radical anions and dianions respectively. These intermediates have been characterized through their electronic spectra and they were quenched by oxygen. Pulse radiolysis of the nitrones 1a–d, 26a,b, 34, and 49 also gave the corresponding radical anions 2a–d, 27a,b, 35, and 50, characterized by their spectra.

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