KINETIC STUDY OF REACTION CHI3+HI-]]-CH2I2+I2 . A SUMMARY OF THERMOCHEMICAL PROPERTIES OF HALOMETHANES AND HALOMETHYL RADICALS
KINETIC STUDY OF REACTION CHI3+HI-]]-CH2I2+I2 . A SUMMARY OF THERMOCHEMICAL PROPERTIES OF HALOMETHANES AND HALOMETHYL RADICALS
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DOI：
10.1021/ja50001a003
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发表时间：
1969-01-01
影响因子：
15
通讯作者：
BENSON, SW
中科院分区：
文献类型：
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作者：
FURUYAMA, S;GOLDEN, DM;BENSON, SW
抽象的;用分光光度法测定了ch3 + HI CH2I2+ I2的反应速率从158.1到206.1。反应i + CHI3<=±CHI2+ I2的反应速率常数为log fci (Ai-1 sec-1)=(11.75±0.17)-（9.63±0）。36) / 0。这个值，结合假设£2= 0±1千卡/摩尔，得到（CHI2）。= 79.9±2.3，Z) f 298 (CHI2-I)= 45.7±1.2，Z) f 298 (CHI2-H)= 102.7±2.5 kcal/mol。用Bernstein相互作用格式和Pauling键能方程对（未混合）卤甲烷和卤甲基自由基的生成热进行了总结和讨论。
Abstract; The rate of the reaction CHI3+ HI CH2I2+ I2 has been followed spectrophotometrically from 158.1 to 206.1. The rate constant for the reactionI+ CHI3<=±CHI2+ I2 fits the equation, log fci (Ai-1 sec-1)=(11.75±0.17)—(9.63±O. 36)/0. This value, combined with the assumption that£ 2= 0±1 kcal/mole, leads to (CHI2.)= 79.9±2.3, Z) tf 298 (CHI2-I)= 45.7±1.2, and Z)/f 2 98 (CHI2-H)= 102.7±2.5 kcal/mole, respectively. The heats of formation of (unmixed) halomethanes and halomethyl radicals are summarized and discussed in terms of Bernstein’s interaction scheme and Pauling’s bond-energy equations.