The overall rate constants for H‐abstraction (k_H) from tetrahydrofuran and D‐abstraction (k_D) from fully deuterated tetrahydrofuran by chlorine atoms in the temperature range of 298‐547 K were determined. In both cases, very weak negative temperature dependences of the overall rate constants were observed, described by the expressions: k_H = (1.55 ± 0.13) × 10⁻¹⁰ exp(52 ± 28/T) cm³ molecule⁻¹ s⁻¹ and k_D = (1.27 ± 0.25) × 10⁻¹⁰exp(55 ± 62/T) cm³ molecule⁻¹ s⁻¹. The experimental results show that the value of the kinetic isotope effect (k_H/k_D), amounting to 1.21 ± 0.10, is temperature independent at 298‐547 K.

中文翻译：

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氯原子与四氢呋喃和完全氘代的四氢呋喃反应动力学的实验研究

确定了在298-547 K的温度范围内，四氢呋喃的H吸收（k _H）和完全氘化的四氢呋喃中的D-吸收（k _D）的总速率常数。在这两种情况下，均观察到总速率常数的非常弱的负温度依赖性，其表达式如下：k _H  =（1.55±0.13）×10 ^-10 exp（52±28 / T）cm ³分子^-1 s ^-1和k _D  =（1.27±0.25）×10 ^-10 exp（55±62 / T）cm ³分子^-1s ^-1。实验结果表明，动力学同位素效应的值（k _H / k _D）为1.21±0.10，在298-547 K时与温度无关。