Abstract
Rates of the fast proton-deuteron exchange between CH3OD and C6H5OH (1), and CH3OD and CH3COOH (2) in dilute CCl4 solutions have been measured by a kinetic IR spectroscopy technique. Under an imposed external electric field (10 V/m), the exchange rate in system (2) increases, which is not observed in (1). The effect is interpreted assuming that, in the second case, a cyclic ion pair with a high dipole moment is formed as a reaction intermediate.
Abstract
Методом кинетической ИК-спектроскопии измерены скорости быстрого дейтерообмена между молекулами CH3OD и C6H5OH (1), CH3OD и CH3COOH (2) в разбавленных растворах в CCl4. При наложении внешнего электрического роля (IO7 B/м) скорость обмена в системе (2) возрастает, чего не наблюдается для процесса (1). Эффект интерпретирован в предположении промежуточного образования в случае (2) циклической ионной пары, обладающей высоким дипольным моментом.
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Bureiko, S.F., Golubev, N.S. & Lange, I.Y. Influence of external electric field on the rate of hydrogen isotope exchange between hydroxyl-containing molecules in CCl4 . React Kinet Catal Lett 16, 321–324 (1981). https://doi.org/10.1007/BF02066583
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DOI: https://doi.org/10.1007/BF02066583