Conclusions
The reaction of Br -2 with Fe 2+solv in a mixture of methanol with diethyl ether occurs according to a intrasphere mechanism with the primary product being the FeBr2+ complex. The rate constant (5.9 ± 0.5)-107 dm3/mole·sec at 298 K is greater by a factor of 15–20 than in the reaction of Br -2 with Fe 2+aq , despite the slower rate of exchange of the solvent molecules for Fe -2 . In the latter case the reduced permittivity considerably increases the lifetime of partners in the contact pair state.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1247–1250, June, 1988.
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Khmelinskii, I.V., Plyusnin, V.F. & Grivin, V.P. Investigation of the reaction of Br -2 and Fe(II) using laser pulsed photolysis. Russ Chem Bull 37, 1095–1097 (1988). https://doi.org/10.1007/BF00961907
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DOI: https://doi.org/10.1007/BF00961907