Chemistry of NO_x and HNO₃ Molecules with Gas-Phase Hydrated O^.- and OH^- Ions.

ABSTRACT: The gas-phase reactions of O^{. -} (H₂ O)_n and OH^- (H₂ O)_n , n=20-38, with nitrogen-containing atmospherically relevant molecules, namely NO_x and HNO₃ , are studied by Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry and theoretically with the use of DFT calculations. Hydrated O^{. -} anions oxidize NO^. and NO₂ ^. to NO₂ ^- and NO₃ ^- through a strongly exothermic reaction with enthalpy of -263±47 kJ mol^-1 and -286±42 kJ mol^-1 , indicating a covalent bond formation. Comparison of the rate coefficients with collision models shows that the reactions are kinetically

SUBMITTER: Lengyel J 

PROVIDER: S-EPMC7384111 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature