14343-69-2Relevant articles and documents
Oxidation of peroxynitrite by inorganic radicals: A pulse radiolysis study
Goldstein, Sara,Saha, Abhijit,Lymar, Sergei V.,Czapski, Gidon
, p. 5549 - 5554 (1998)
Reactivity of the peroxynitrite ion toward a number of inorganic radicals was determined by using the pulse radiolysis technique. The rate constants for the oxidation of the ONOO- ion by CO3·-, ·N3, and ClO2· radicals were determined from their decay kinetics to be (7.7 ± 1.2) x 106 (I = 0.6 M), (7.2 ± 0.9) x 108, and (3.2 ± 0.3) x 104 M-1 s-(l), respectively. For the ·OH radical, the rate constant of (4.8 ± 0.8) x 109 M-1 s-1 was obtained by using competition kinetic analysis. The oxidation potential of the ONOO- ion was estimated as 0.8 V from the kinetic data. Although thermodynamically favorable, oxidation of ONOO- by the °NO2 radical was not observed; an upper limit of 2.5 x 104 M-1 s-1 could be set for this reaction. Contribution from some of these reactions to the decomposition of peroxynitrite in the presence and absence of CO2 is discussed.
Photodetachment of the Azide Anion in the Gas Phase. Electron Affinity of the Azide Radical
Jackson, Robert L.,Pellerite, Mark J.,Brauman, John I.
, p. 1802 - 1805 (1981)
We report the formation of the azide anion, N3-, in the gas phase using azidotrimethylsilane as the source.The azide anion is formed as a product of a fast ion-molecule reaction between the trimethylsilylnitrene anion, (CH3)3SiN-, and azidotrimethylsilane.A photodetachnemt treshold for N3- is obtained which can be equated with the adiabatic electron affinity of the azide radical, N3, giving EA = 62.1 +/- 2.8 kcal/mol.
Kunkely, Horst,Vogler, Arnd
, p. 2731 - 2734 (1989)
Acid-base equilibrium dynamics in methanol and dimethyl sulfoxide probed by two-dimensional infrared spectroscopy
Lee, Chiho,Son, Hyewon,Park, Sungnam
, p. 17557 - 17561 (2015/07/07)
Two-dimensional infrared (2DIR) spectroscopy, which has been proven to be an excellent experimental method for studying thermally-driven chemical processes, was successfully used to investigate the acid dissociation equilibrium of HN3 in methanol (CH3OH) and dimethyl sulfoxide (DMSO) for the first time. Our 2DIR experimental results indicate that the acid-base equilibrium occurs on picosecond timescales in CH3OH but that it occurs on much longer timescales in DMSO. Our results imply that the different timescales of the acid-base equilibrium originate from different proton transfer mechanisms between the acidic (HN3) and basic (N3-) species in CH3OH and DMSO. In CH3OH, the acid-base equilibrium is assisted by the surrounding CH3OH molecules which can directly donate H+ to N3- and accept H+ from HN3 and the proton migrates through the hydrogen-bonded chain of CH3OH. On the other hand, the acid-base equilibrium in DMSO occurs through the mutual diffusion of HN3 and N3- or direct proton transfer. Our 2DIR experimental results corroborate different proton transfer mechanisms in the acid-base equilibrium in protic (CH3OH) and aprotic (DMSO) solvents.
Reactions of laser-ablated osmium and ruthenium atoms with nitrogen. Matrix infrared spectra and density functional calculations of osmium and ruthenium nitrides and dinitrides
Citra, Angelo,Andrews, Lester
, p. 1152 - 1161 (2007/10/03)
Laser-ablated osmium and ruthenium atoms were reacted with nitrogen molecules; the products were isolated in solid argon and nitrogen and identified by infrared spectroscopy. Both MN and NMN nitrides are observed, and estimates for the triatomic bond angles are made using nitrogen and ruthenium isotopic data. The growth of NOsN on annealing in solid argon suggests that osmium atoms insert into the dinitrogen triple bond at cryogenic temperatures, allowing a lower limit of ～473 kJ/mol to be estimated for the average Os-N bond energy in NOsN. The force constants for MN and NMN (M= Fe, Ru, Os) were calculated using all available isotopic data; force constants increase moving down the metal group, and diatomic MN force constants are larger than those for the corresponding NMN triatomic molecules. DFT calculations for the ruthenium and osmium nitrides give reasonable agreement with experiment. Bonding analyses for these molecules show . that the M-N bonds are largely nonpolar with bond orders in the range 2.5-3.0. Several metal dinitrogen complexes are also observed and assignments are proposed.
