- Electron irradiation of solid nitrous oxide
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We report the results of chemical processing induced by 1 keV electron irradiation of a solid N2O ice sample formed at 25 K. Ozone and several oxides of nitrogen (NO2, N2O2, N2O3, N2O4 and N2O5) were observed to form during the irradiation period. Such reactions have important implications for the ice chemistry of outer solar system planets/satellites and interstellar ices.
- Sivaraman,Ptasinska,Jheeta,Mason
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p. 108 - 111
(2009/02/04)
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- On the behaviour of nitrogen oxides in liquefied argon and krypton. Dimerisation of nitric oxide
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Solutions containing several nitrogen oxide species have been investigated in liquefied argon in the temperature range 84-105 K, and in liquefied krypton in the temperature range 116-150 K, using infrared spectroscopy.The following nitrogen oxide species were characterised in these solutions: NO, cis-ONNO, trans-ONNO, the asymmetric dimer ONON, asymmetric ONNO2, symmetric ONONO and N2O4 with D2h symmetry.The enthalpy of dimerisation of NO to cis-ONNO has been determined in liquefied argon to be -14.3 +/- 1 kJ mol-1.
- Sluyts, E. J.,Veken, B. J. Van der
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p. 249 - 268
(2007/10/02)
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- A Matrix-Isolation-Infrared Spectroscopic Study of the Reactions of Nitric Oxide with Oxygen and Ozone
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The oxidation of nitric oxide to NO2 has been studied by trapping the products of the gas-phase reactions of nitric oxide with excess oxygen and ozone in argon matrices at 10 K.The subsequent transitient species were identified and characterized by their infrared spectra.The primary products of the NO + O2 reactions were NO2, N2O3(A), N2O3(B), N2O4, and peroxy nitrate (OONO).The primary products of the NO + O3 reactions were NO2 and peroxy NO3 with the higher nitric oxides (N2O3, N2O4) formed in low concentrations relative to the NO + O2 reactions.Isotopic oxygen and ozone were employed to identify the infrared absorption frequency of peroxy nitrate.On the basis of our observations, reaction mechanisms are proposed for the oxidation of NO to NO2.
- Bhatia, Subhash C.,Hall, John H.
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p. 3255 - 3259
(2007/10/02)
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