Kinetics and Products of the Reactions of OH Radicals with Cyclohexene, 1-Methyl-1-cyclohexene, <i>cis</i>-Cyclooctene, and <i>cis</i>-Cyclodecene
作者:Sara M. Aschmann、Janet Arey、Roger Atkinson
DOI:10.1021/jp307217m
日期:2012.9.27
compound 1,3,5-trimethylbenzene. In addition, a rate constant of (4.8 ± 1.3) × 10–11 cm3 molecule–1 s–1 was derived for the reaction of OH radicals with 1,6-hexanedial, relative to our measured rate constant for OH + cyclohexene. Analyses of products of the OH + cyclohexene, 1-methyl-1-cyclohexene, and cis-cyclooctene reactions by direct air sampling atmospheric pressure ionization mass spectrometry and/or
OH自由基与四种C 6 -C 10环烯烃反应的速率常数已使用相对速率技术在297±2 K下测量。速率常数(以10 –11 cm 3分子–1 s –1为单位)为环己烯,6.35±0.12;顺式-环辛烯,5.16±0.15; 顺式-环癸烯,4.18±0.06; 和1-甲基-1-环己烯,9.81±0.18,其中所示误差为两个最小二乘方标准偏差,并且不包括参考化合物1,3,5-三甲基苯的速率常数的不确定性。此外,速率常数为(4.8±1.3)×10 –11 cm 3分子–1相对于我们测得的OH +环己烯的速率常数,得出s –1是OH自由基与1,6-己二醛反应的结果。通过直接空气采样大气压电离质谱和/或通过气相色谱-质谱联用分析OH +环己烯,1-甲基-1-环己烯和顺式-环辛烯反应的产物,结果表明存在归因于环1的产物,2-羟基硝酸盐和二羰基的1,6-己二醛,6-氧杂庚醛和1,8-辛二醛。这些二羰基产物是在中间体环状1