Methylidyne + nitrogen .dblarw. HCN2: kinetic study of the addition channel from 300 to 1100 K
作者:Laura J. Medhurst、Nancy L. Garland、H. H. Nelson
DOI:10.1021/j100149a030
日期:1993.11
The reaction CH + N2 reversible HCN2 has been studied using laser-induced-fluorescence detection of CH from 298 to 1075 K at 100 Torr total pressure. The experimental rate coefficient is fit by k = 44.0 x T-5.3 cm3 s-1 exp(-664.6/7). The pressure dependence was measured at 750 K, and the observed rate coefficient shows an increase from (3.2 +/- 1.8) x 10(-15) cm3 s-1 at 25 Torr to (8.0 +/- 1.8) x 10(-15) cm3 s-1 at 100 Torr. Transition-state-theory modeling indicates that recent calculations of the structure of HCN2 [Manaa, M. R.; Yarkony, D. R. Chem. Phys. Lett. 1992,188, 352; Martin, J. M. L.; Taylor, P. R. Chem. Phys. Lett. 1993, 209, 143], which is datively bonded and stabilized by approximately 29 kcal mol-1, are consistent with the data.