An Experimental and Theoretical Study of the Reaction Between NH(X-3 Sigma(-)) + SO(X-3 Sigma(-))

作者：Blitz Mark A; Shannon Robin J; Marshall Paul; Pilling Michael J^*

来源：Zeitschrift fur Physikalische Chemie-International Journal of Research in Physical Chemistry & Chemical Physics, 2010, 224(7-8): 1009-1024.

DOI：10.1524/zpch.2010.6138

• NH(X-3 Sigma(-))
• SO(X-3 Sigma(-))
• Reaction

The kinetics of the reaction between NH(X-3 Sigma(-)) + SO(X-3 Sigma(-)) have been studied over the range 295-703 K using pulsed laser photolysis / laser induced fluorescence in 100 Torr He The rate coefficient is (50 +/- 2 0) X 10(-11) cm(3) molecule(-1) s(-1) and is independent of temperature within experimental scatter Electronic structure calculations show that reaction proceeds via bound intermediates to form NS + OH and NO + SH as the major biomolecular products An RRKM / master equation analysis shows that stabilization of the intermediates is negligible at the pressures investigated (<10(4) Torr) so that the overall rate coefficient is independent of pressure The calculations show that the main product channel under combustion conditions is NS + OH Attempts to observe NS under the experimental conditions were unsuccessful The experimental decay data are consistent with the occurrence of the reaction NH2 + Cl -> NH + HCl at temperatures above 500 K approximate Arrhenius parameters are provided

• 出版日期2010