Kinetic study of the reaction of Fe(a5DJ) with N2O from 398 to 720 K

The gas phase reactivity of Fe(a 5DJ) with N2O in the temperature range 398–620 K is reported. Iron atoms were produced by the photodissociation of ferrocene and detected by laser-induced fluorescence. The reaction rates of the a 5DJ states are very slow and temperature dependent. The bimolecular rate constant is described in Arrhenius form by (1.41 ± 0.29) × 10−10 exp(−44.4 ± 1.0 kJ/mol/RT) cm3 s−1 where the uncertainties are ±2σ. The disappearance rates in the presence of N2O are independent of buffer gas identity (Ar or N2) and total pressure. The removal rate constants for the a 5DJ states are independent of J.