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The Photooxidation Of Hexabromorhenate(Iv) In Ethyl Bromide, Jessica L. Cohen, Patrick Hoggard
The Photooxidation Of Hexabromorhenate(Iv) In Ethyl Bromide, Jessica L. Cohen, Patrick Hoggard
Chemistry and Biochemistry
Irradiation at 254 or 313 nm of solutions of (Bu4N)2[ReBr6] in ethyl bromide exposed to air causes complete conversion of the hexabromorhenate(IV) to perrhenate ion. The rate of the reaction is linearly dependent on the incident light intensity and on a combination of the fraction of light absorbed by the rhenium complex and the fraction absorbed by the ethyl bromide. The experimental results are consistent with a mechanism in which the peroxy radical CH3CH(Br)OO, produced in both the solvent-initiated and metal-initiated pathways, oxidizes [ReBr6]2− by electron transfer.