Matrix Study of the HNNO Intermediate Formed From the
The reaction between the imidogen radical, NH, and nitric oxide is of interest in the combustion of nitrogen-containing fuels, astrophysical systems and atmospheric chemistry. Matrix isolation is used for studying transient or unstable molecules because the very cold temperature eliminates most of the energy in the system. The unpaired electrons in both species when they are in their ground electronic states allows the reaction of NH with NO to occur with little or no activation energy, making it ideal for examination by matrix isolation techniques. The infrared spectrum provides preliminary experimental evidence of the existence of the transient HNNO intermediate molecule produced by this reaction. New infrared absorptions appear when the matrix containing nitric oxide and imidogen radicals, which are produced by UV photolysis, is warmed to 40K and disappear upon further UV photolysis.