THERMOCHEMISTRY AND KINETICS OF THE CL+O-2 ASSOCIATION REACTION

被引：50

作者：

NICOVICH, JM

KREUTTER, KD

SHACKELFORD, CJ

WINE, PH

机构：

[1] Physical Sciences Laboratory, Georgia Tech Research Institute, Georgia Institute of Technology, Atlanta

来源：

CHEMICAL PHYSICS LETTERS | 1991年 / 179卷 / 04期

关键词：

D O I：

10.1016/0009-2614(91)85168-V

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：

Laser flash photolysis of Cl2/O2 mixtures has been employed in conjunction with Cl(2P3/2) detection by time-resolved resonance fluorescence spectroscopy to investigate equilibration kinetics for the reactions Cl+O2+O2 half arrow right over half arrow left ClOO+O2 at temperatures of 181-200 K and O2 pressures of 15-40 Torr. The third-order rate coefficient for the association reaction at 186.5 +/- 5.5 K is (8.9 +/- 2.9) x 10(-33) cm6 molecule-2 s-1 and the equilibrium constant (K(p)) at 185.4 K is 18.9 atm-1 (factor of 1.7 uncertainty). A third law analysis of our data leads to a value for the Cl-OO bond dissociation energy of 4.76 +/- 0.49 kcal mol-1.

引用

页码：367 / 373

页数：7

共 36 条

[11] COLLISIONAL QUENCHING OF ELECTRONICALLY EXCITED CHLORINE ATOMS, CL[3P5(2P1/2)], BY ATMOSPHERIC GASES STUDIED BY TIME-RESOLVED ATOMIC RESONANCE-ABSORPTION SPECTROSCOPY IN THE VACUUM ULTRAVIOLET [J].