Dissociation of 1,3-hexadiene and the resonance energy of the pentadienyl radical
作者:Antony B. Trenwith
DOI:10.1039/f19807600266
日期:——
Measurements of the rate at which methane is formed in the pyrolysis of 1,3-hexadiene at temperatures over the range 694–759 K and pressures between 25 and 200 Torr show that the dissociation reaction CH3CH2CHCHCHCH2→ CH3·+·CH2CHCHCHCH2(1) is a homogeneous, first-order reaction under these conditions and the rate expression is log (k1/s–1)=(15.92 ± 0.17)–(66 390 ± 840)/θ where θ= 2.303RT/cal mol–1(1
在其上形成甲烷1,3-己二烯的热分解在温度超过所述范围694-759 K和25至200托的压力显示速率的测量值,该离解反应CH 3 CH 2 CH CHCH CH 2 →CH 3 ·+·CH 2 CH CHCH CH 2(1)在这些条件下是均相的一级反应,速率表达式为log(k 1 / s –1)=(15.92±0.17)–(66 390±840) / θ,其中θ= 2.303 R T / cal mol –1(1 cal = 4.18 J)。
Dissociation of 3-methylpenta-1, 4-diene and the resonance energy of the pentadienyl radical
作者:Antony B. Trenwith
DOI:10.1039/f19827803131
日期:——
= 4.18 J) and this leads to D[H—CH(C2H3)2]= 76.4 kcal mol–1, which by comparison with the value of 95.0 for the secondary C—H bond dissociationenergy in alkanes leads to a figure of 18.6 ± 1.5 kcal mol–1 for the resonance stabilisation energy of the pentadienyl radical.
通过测量在653–716 K范围内的温度和15至200 Torr的压力下3-甲基戊-1、4-二烯热解过程中甲烷的初始形成速率,已证明甲烷是由均相形成的,一阶过程。对其他热解产物的检查表明,形成伯甲烷的最合理方式是[省略图示],然后是[省略图示]。反应(i)的速率表达式为log(k i / s –1)=(15.36±0.1)–(65040±300)/ θ,其中θ = 2.303 R T / cal mol –1(1 cal = 4.18 J)这导致D [H-CH(C 2 H 3)2 ] = 76.4 kcal mol –1,与烷烃中二级CH键离解能的95.0相比,戊二烯基的共振稳定能为18.6±1.5 kcal mol –1。
Reaction of cumene with ozone to form cumyl hydrotrioxide and the kinetics of decomposition of cumyl hydrotrioxide
作者:William A. Pryor、Norio Ohto、Daniel F. Church
DOI:10.1021/ja00349a044
日期:1983.6
Roth, Wolfgang R.; Staemmler, Volker; Neumann, Martin, Liebigs Annalen, 1995, # 6, p. 1061 - 1118
作者:Roth, Wolfgang R.、Staemmler, Volker、Neumann, Martin、Schmuck, Carsten
DOI:——
日期:——
Generation of sulphonyl radicals from sulphonate esters