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Combination and disproportionation of methyl and 2-propyl radicals with 1,1,2-trimethylallyl radicals

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Abstract

The combinations and disproportionations of the CH3 ⊙ and 2-propyl (iP⊙) radicals with the 1,1,2-trimethylallyl (TMA⊙) radical have been studied in the gas phase in the temperature interval of 389–451 K and 490–540 K, respectively. For the ratios of the terminal (t) and non-terminal (n) combinations of the CH3 ⊙ and iP⊙ radicals with the TMA⊙ radical, values of 1.9±0.1 and 2.84±±0.10 were obtained, respectively. The ratios of the tt and tn and nn to tn combinations of the TMA⊙ radical were 1.59 and 0.46, respectively. The disproportionation-combination rations were Δ(CH3 ⊙, TMA⊙)=0.022±±0.012 and Δ(iP⊙, TMA⊙)=0.026±0.011.

Abstract

Реакции соединения и диспропорционирования CH ⊙3 и 2-пропильных (iP⊙) радикалов с 1,1,2-триметилаллильным радикалом (TMA⊙) исследовали в газовои фазе и в двух интервалах температур: 389–451 K и 490–540 K.

Отношение присоединения метильного и изопропильного радикалов по конечному углероду (t) к неконечному углероду (n) TMA⊙ равны 1,9±0,1 и 2,84±0,10, соотвественно. Отношения tt к tn и nn к tn присоединения радикалов TMA⊙ равны 1,59 и 0,46, соответственно. Отношения диспропорционирования к присоединению равны Δ(CH ⊙3 , TMA⊙)=0,022±0,012 и Δ(iP⊙, TMA⊙)=0,026±0,011.

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  1. Attila József University, P.O. Box 105, H-6701, Szeged, Hungary

    T. Körtvélyesi & L. Seres

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  1. T. Körtvélyesi
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  2. L. Seres
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Körtvélyesi, T., Seres, L. Combination and disproportionation of methyl and 2-propyl radicals with 1,1,2-trimethylallyl radicals. React Kinet Catal Lett 46, 293–299 (1992). https://doi.org/10.1007/BF02070948

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