Laser flash photolysis of pyridine N-oxide: kinetic studies of atomic oxygen [O (3P)] in solution

G Bucher, JC Scaiano

Index: Bucher, Goetz; Scaiano, J. C. Journal of Physical Chemistry, 1994 , vol. 98, # 48 p. 12471 - 12473

Full Text: HTML

Citation Number: 37

Abstract

Laser flash photolysis of pyridine N-oxide in acetonitrile yields atomic oxygen, O (3P), in modest quantum yield. The reactivity of O (3P) could be probed by monitoring the product of its reaction with the solvent, assigned to acetonitrile oxide (CH3CNO). For example, reactions with dioxygen, 1-octene, and cyclopentane take place with rate constants of 4.1 x lo9, 8.7 x lo9, and 3.8 x lo8 M-'sl, respectively, at room temperature. Isotope effects are cu. ...