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- W4246348512 abstract "2,2′-Bipyridine is reduced by electrolysis at constant potential at a Hg electrode in the pH range 12<pH<14. A reversible 2e−-, 2 H+-step was found. The first product Y is transformed in a fast irreversible reaction into a substance A, which undergoes slow consecutive reactions according to the scheme A agB agC. The mechanism was simulated by a computer program and the rate constants optimized. B is further reducible in a 2 e−-, 2 H+-step, forming D. Therefore at long times of electrolysis only D remains. The substances Y, A, B, C are isomeric dihydrobipyridines. D is a tetrahydrobipyridine. The substances A, B, C and D could be isolated in solution, and partially identified by u.v.-spectroscopy, but polymerized if they were concentrated. The stable substance C is 2,5-dihydrobipy, Y probably N,N′-dihydrobipy. A reaction mechanism is proposed and it is shown that only two reaction paths remain possible, A being either the 1,4- or the 1,6-dihydrobipy." @default.
- W4246348512 created "2022-05-12" @default.
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- W4246348512 date "1977-08-10" @default.
- W4246348512 modified "2023-10-16" @default.
- W4246348512 title "Kinetics and mechanism of the electrochemical reduction of 2,2′-bipyridine Part II. Consecutive isomerization processes of dihydrobipyridine" @default.
- W4246348512 doi "https://doi.org/10.1016/0368-1874(77)80285-2" @default.
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