3017-23-0Relevant academic research and scientific papers
Product channels in the 193-nm photodissociation of HCNO (fulminic acid)
Feng, Wenhui,Hershberger, John F.
, p. 18 - 23 (2016/04/05)
IR diode laser spectroscopy was used to detect the products of HCNO (fulminic acid) photolysis at 193 nm. Six product channels are energetically possible at this photolysis wavelength: O + HCN, H + NCO/CNO, CN + OH, CO + NH, NO + CH and HNCO. In some experiments, isotopically labeled 15N18O, C2D6 or C6H12 reagents were included into the photolysis mixture in order to suppress and/or redirect possible secondary reactions. HCN, OC18O, 15N15NO, CO, DCN and HNCO molecules were detected upon laser photolysis of HCNO/reagents/buffer gas mixtures. Analysis of the yields of product molecules leads to the following photolysis quantum yields: φ1a (O + HCN) = 0.38 ± 0.04, φ1b (H + (NCO)) = 0.07 ± 0.02, φ1c (CN + OH) = 0.24 ± 0.03, φ1d (CO + NH(a1Δ)) 1e (HNCO) = 0.02 ± 0.01 and φ1f (CH + NO) = 0.21 ± 0.1, respectively.
Quantification of the 248 nm photolysis products of HCNO (fulminic Acid)
Feng, Wenhui,Hershberger, John F.
, p. 829 - 837 (2014/03/21)
IR diode laser spectroscopy was used to detect the products of HCNO (fulminic acid) photolysis at 248 nm. Five product channels are energetically possible at this photolysis wavelength: O + HCN, H + (NCO), CN + OH, CO + NH, and HNCO. In some experiments, isotopically labeled 18O2, 15N18O and C2D6 reagents were included into the photolysis mixture in order to suppress and/or isotopically label possible secondary reactions. HCN, OC18O, C18O, NCO, DCN, and NH molecules were detected upon laser photolysis of HCNO/reagents/buffer gas mixtures. Analysis of the yields of product molecules leads to the following photolysis quantum yields: 1a (O + HCN) = 0.39 ± 0.07, 1b (H + (NCO)) = 0.21 ± 0.04, 1c (CN + OH) = 0.16 ± 0.04, 1d (CN + NH(a1Δ)) = 0.19 0.03, and 1e (HNCO) = 0.05 ± 0.02, respectively. The uncertainties include both random errors (1σ) and consideration of major sources of systematic error. In conjunction with the photolysis experiment, the H + HCNO reaction was investigated. Experimental data demonstrate that this reaction is very slow and does not contribute significantly to the secondary chemistry.
Kinetics of reactions of CN with chlorinated methanes
Samant, Vaishali,Hershberger, John F.
experimental part, p. 64 - 67 (2009/02/04)
The kinetics of reactions of CN with the chlorinated methanes CH3Cl, CH2Cl2, CHCl3 and CCl4 were investigated over the temperature range 298-573 K, using laser induced fluorescence (LIF) spectroscopy. At 298 K, rate constants of 9.0 ± 0.3 × 10-13, 8.8 ± 0.4 × 10-13, 9.0 ± 0.5 × 10-13 and 4.3 ± 0.6 × 10-13 cm3 molecule-1 s-1 were measured, respectively. A small positive temperature dependence was observed, as well as kinetic isotope effects of kH/kD ～ 2.14-2.25. These data along with product detection experiments strongly suggest that hydrogen abstraction dominates these reactions.
Gas-phase chemistry of bare transition-metal ions in comparison
Eller,Zummack,Schwarz
, p. 621 - 627 (2007/10/02)
Some basic principles of gas-phase organometallic chemistry are demonstrated, exemplified for the model compound 2-methylbutanenitrile (5). The reactions of first-row transition-metal ions with 5 and its deuterated isotopomers 5a-5c reveal a distinct infl
Branching ratios in the N + CH3 reaction: Formation of the methylene amidogen (H2CN) radical
Marston, G.,Nesbitt, F. L.,Stief, L. J.
, p. 3483 - 3491 (2007/10/02)
The branching ratios for the reaction N + CH3 -> Products, have been determined in a discharge-flow system coupled with mass-spectrometric detection of both reactants and products.The major products are H2CN + H, with about 10percent of the reaction proce
Mass Spectrometric Investigation of Nitrogen Compounds, XXXV. Phenyl-substituted 2-Azaallenium Ions in the Gas Phase
Wuerthwein, Ernst-Ullrich,Halim, Herman,Schwarz, Helmut,Nibbering, Nico M. M.
, p. 2626 - 2634 (2007/10/02)
The gas phase chemistry of metastable phenyl-substituted 2-azaallenium ions (2a, b, c) is characterized by intramolecular electrophilic substitution reactions; these processes are energetically favoured in comparison with various phenyl and hydrogen migrations, in spite of the fact that the latter may give rise to the formation of more stable intermediates (nitrilium ions).As a direct consequence of the electrophilic substitution, 2a, c decompose via loss of HCN, whereas from 2b PhCN is eliminated unimolecularly.The combination of experimental investigations, employing - and -labelled precursors, and MNDO calculations allows to give a detailed description of the chemistry of isolated 2a, b, c cations.
