Отправить статью по E-mail Kinetic isotope effects in oxidation reaction of C2H4 and C2D4 by p-benzoquinone in the Pd2+—HClO4—CH3CN—H2O system
- Авторы: Martynov I.V.1, Efremov G.E.1, Temkin O.N.1
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Учреждения:
- Institute of Fine Chemical Technology, Moscow Technological University
- Выпуск: Том 66, № 5 (2017)
- Страницы: 922-923
- Раздел: Brief Communications
- URL: https://journals.rcsi.science/1066-5285/article/view/240644
- DOI: https://doi.org/10.1007/s11172-017-1830-8
- ID: 240644
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Аннотация
Kinetic isotope effects (KIE) have been measured for oxidation reactions of ethylene by p-benzoquinone in Pd2+—MeCN—H2O—HClO4 system. Under the conditions of preferred formation of complex Pd(MeCN)(H2O)32+ the ratio between the initial reaction rates \(R_{{C_2}{H_4}} 0/R_{{C_2}{D_4}} 0\) is equal to 1.14±0.06 and is close to the KIE for classical chloride systems. Based on the obtained results and previous data for C2H4—C2D4 and H2O—D2O (0.97±0.12) systems, the slow step was proposed in the reaction mechanism–a trans-addition of water molecule to the cationic p-complex LPd(H2O)2(CH2CH2)2+ with formation of metalcarben-ium ion solvated by water molecule (LPd(H2O)2(CH2CH2O+H2)+).
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I. Martynov
Institute of Fine Chemical Technology, Moscow Technological University
Email: olegtemkin@mail.ru
Россия, 86 prosp. Vernadskogo, Moscow, 119571
G. Efremov
Institute of Fine Chemical Technology, Moscow Technological University
Email: olegtemkin@mail.ru
Россия, 86 prosp. Vernadskogo, Moscow, 119571
O. Temkin
Institute of Fine Chemical Technology, Moscow Technological University
Автор, ответственный за переписку.
Email: olegtemkin@mail.ru
Россия, 86 prosp. Vernadskogo, Moscow, 119571
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