THERMODYNAMIC PROPERTIES OF BENZYL RADICALS - ENTHALPY OF FORMATION FROM TOLUENE, BENZYL IODIDE, AND DIBENZYL DISSOCIATION EQUILIBRIA

被引：90

作者：

HIPPLER, H ^{[1
]}

TROE, J ^{[1
]}

机构：

[1] UNIV GOTTINGEN,INST PHYS CHEM,TAMMANNSTR 6,W-3400 GOTTINGEN,GERMANY

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1990年 / 94卷 / 09期

关键词：

D O I：

10.1021/j100372a083

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Measurements of the dissociation and reverse recombination rates of toluene, benzyl iodide, and dibenzyl in shock waves have provided a direct access to the dissociation equilibria. A third-law analysis of these data is made, providing a new value of the enthalpy of formation of benzyl of ΔHf°298 = 210.5 ± 4 kJ mol-1 which is higher than that given by earlier evaluations. On the basis of this value, thermodynamic properties of benzyl are tabulated over the range 0-3000 K. Revised values of the bond energies of toluene, benzyl iodide, dibenzyl, and ethylbenzene of ΔH°298 = 378.4, 190.0, 277.2, and 328.8 kJ mol-1, respectively, are also given. © 1990 American Chemical Society.

引用

页码：3803 / 3806

页数：4

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