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The flash photolysis and laser resonance absorption technique was used for the determination of the rate constants of reactions of NH2 with acetylene in the temperature range 340–510 K, NH2 with 1,3‐butadiene from 298 to 500 K and HCO with 1,3‐butadiene from 298 to 522 K. The Arrhenius expressions for the rate constants are the following (in cm3 · molecule−1 · s−1 units): The rate expressions for k1, and k2 are compared to previous results reported in the literature. The determination of k4 represents the first data concerning the reactivity of HCO with an unsaturated hydrocarbon. A tentative evaluation of the reactivity of HCO with olefins is also given. Product analysis shows that reaction (4) proceeds essentially via an addition process rather than a hydrogen atom transfer from HCO.
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Lesclaux et al. (1985) studied this question.
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