Cobalt-induced activation of hydrogen peroxide for the direct ketonization of methylenic carbons [c-C6H12 .fwdarw. c-C6H10(O)], the oxidation of alcohols and aldehydes, and the dioxygenation of aryl olefins and acetylenes
POLAROGRAPHIC behaviour of the ions Co(dipy)33+ and Co(dipy)32+ shows that they are reversibly reduced at the dropping mercury electrode to a compound of univalent cobalt which does not decompose in neutral aqueous or ethanolic solutions.
Electron self-exchange, oxidation, and reduction reactions of bis(2,9-dimethyl-4,7-diphenyl- 1,10-phenanthroline)copper(II/I) and bis(6,6<i>'</i>-dimethyl-2,2<i>'</i>-bipyridine)copper(II/I) couples in acetonitrile: gated ET for the reduction, oxidation, and self-exchange processes
作者:Nobuyoshi Koshino、Yoshio Kuchiyama、Shigenobu Funahashi、Hideo D Takagi
DOI:10.1139/v99-171
日期:1999.9.1
The electron self-exchangerate constant for the Cu(dmbp)22+/+ couple (dmbp = 6,6'-dimethyl-2,2'-bipyridine) was measured in acetonitrile by the NMR method (kex = 5.5 × 103 kg mol-1 s-1, ΔH* = 35.0...
alkylcobalt(III) complexes to cobalt(III) porphyrin has also been shown to proceed via electron transfer, followed by the cleavage of cobaltcarbon bonds of alkylcobalt(IV) complexes and the subsequent bond formation between alkyl radical and cobalt(II) porphyrin to yield alkylcobalt(III) porphyrins. The rate constants of the overall carbanion transfer from alkylcobalt(III) complexes to cobalt(III) porphyrin