Rate Coefficients for the Gas-Phase Reactions of Chlorine Atoms with Cyclic Ethers at 298 K
作者:H. D. Alwe、M. Walawalkar、A. Sharma、K. K. Pushpa、S. Dhanya、P. D. Naik
DOI:10.1002/kin.20765
日期:2013.5
after correcting for the dark reaction with CH3COCl and assuming no interference from other radical reactions, a relative rate ratio of 0.85 ± 0.16 is obtained with respect to cycloheptene, corresponding to a rate coefficient of (4.52 ± 0.99) × 10−10 cm3 molecule−1 s−1. Unlike cyclic hydrocarbons, there is no increase with increasing number of CH2 groups in these cyclic ethers whereas there is an increase
使用相对速率法在298 K下测量了Cl原子与环醚,四氢吡喃(THP),四氢呋喃(THF)和二氢呋喃(2,5-DHF和2,3-DHF)的反应速率系数。相对速率比率THP和THF是0.80±0.05和0.80±0.08,分别与Ñ己烷作为参考分子。以正戊烷为参比分子的THF和2,5-DHF的相对比率分别为0.95±0.07和1.73±0.06,以1,丁烯为参比的2,5-DHF的相对比率为1.38±0.05。速率系数的平均值为(2.52±0.36),(2.50±0.39)和(4.48±0.59)×10 -10 cm 3分子-1 s -1分别用于THP,THF和2,5-DHF。此处引用的相对比率的误差是不同实验组中统计变化的2σ。这些误差与使用统计误差传播方程式报告的参考比率系数的误差相结合,是比率系数的引用误差。对于2,3-DHF,在校正了与CH 3 COCl的暗反应并假定不受其他自由基反应的干扰后,相对于环庚烯的相对比率为0