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化学学报
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化学学报 ›› 1994, Vol. 52 ›› Issue (1): 94-99. 上一篇    下一篇

研究论文

碳-碳键均裂反应的溶剂效应

杨第伦;金;李成贵;高素莲;包青芳;刘有成   

  1. 兰州大学化学系应用有机化学实验室
  • 发布日期:1994-01-15

Solvent effect on the homolytic reaction of carbon-carbon bond

YANG DILUN;JIN;LI CHENGGUI;GAO SULIAN;BAO QINGFANG;LIU YOUCHENG   

  • Published:1994-01-15

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测定了meso-2, 3-二氰基-2, 3-二苯基丁二酸二乙酯分别在乙苯、苯乙醚、氯苯、苯甲酸甲酯、苯甲腈及1, 2-二溴乙烷中, 于90, 100, 110, 120℃的异构化动力学、平衡常数、反应速率常数和活性参数。结果表明, 平衡常数对溶剂和反应温度都不敏感。

关键词: 反应动力学, 乙苯, 平衡常数, 溶剂效应, 聚对苯二甲酰对苯二胺纤维, 苯甲腈, 氯苯, 碳-碳键, 异构化, 均裂反应

The kinetics of the thermal meso/dl isomerization of meso-diethyl 2, 3-dicyano-2, 3-diphenylsuccinate were determined in ethylbenzene, ethylphenyl ether, chlorobenzene, methyl benzoate, phenyl cyanide and 1, 2-dibromoethane at 90, 100, 110 and 120℃ respectively, The equilibrium constants, rate constants and activation parameters of the thermal meso/al isomerization was obtained. The results indicated that the equilibrium constants are not sensitive to both solvents and reaction temperature.

Key words: REACTION KINETICS, ETHYLBENZENE, EQUILIBRIUM CONSTANT, SOLVENT EFFECT, KEVLAR, BENZONITRILE, CHLOROBENZENE, CARBON-CARBON BOND, ISOMERIZATION, HOMOLYTIC REACTION

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