Kinetics Study of the Reaction of NO with FO, ClO, BrO, and IO at 298 K

Article abstract of DOI:10.1021/j150620a022

The reactions of nitric oxide with halogen oxide radicals (XO = FO, ClO, BrO, IO) have been studied at 298 K by utilizing the discharge flow/mass spectrometric technique.The pseudo-first-order decays of XO radicals were measured in the presence of large excess concentrations of nitric oxide.The bimolecular rate coefficients and their associated 2? uncertainties are as follows (cm³ molecule^-1 s^-1): k(NO + FO) = (2.60 +/-0.50) x 1E-11, k(NO + ClO) = (1.72 +/- 0.18) x 1E-11, k(NO + BrO) = (2.15 +/- 0.18) x 1E-11, k(NO + IO) = (1.67 +/- 0.16) x 1E-11.In addition, the rate coefficient for the reaction of atomic oxigen with molecular iodine was determined at 289 K by observing the pseudo-first-order decay of I2 in the presence of a large excess concentration of atomic oxygen.The result is k(O +I2) = (1.38 +/- 0.44) x 1E-10 cm³ molecule^-1 s^-1.These results are compared to previous measurements.