51060-05-0Relevant 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.
Product channels of the HCCO + NO reaction
Meyer, Justin P.,Hershberger, John F.
, p. 8363 - 8366 (2008/10/09)
The product branching ratio of the HCCO + NO reaction was investigated using the laser photolysis/infrared absorption technique. Ethyl ethynyl ether (C2H5OCCH) was used as the HCCO radical precursor. Transient infrared detection of CO, CO2, and HCNO products was used to determine the following branching ratios at 296 K: ??(CO+HCNO) = 0.78 ?± 0.04 and ??(CO2+HCN) = 0.22 ?± 0.04. These values are in good agreement with some recent ab initio calculations. ? 2005 American Chemical Society.
Pyrolysis nozzles coupled to a microwave spectrometer with stark modulation for the detection of transients species in a supersonic expansion
McNaughton, Don,Evans, Corey J.
, p. 1313 - 1327 (2007/10/03)
Two types of pyrolysis nozzles have been constructed and coupled to a new Stark modulated microwave spectrometer. The nozzles were tested on their ability to generate rotationally cooled transient species through a supersonic expansion. The transients species vinylamine, thioketene and ketene were generated and detected using nozzle temperatures ranging from 400-800°C. Pyrolysis temperatures were generally lower than those used in normal flow pyrolysis experiments and rotational temperatures of ca. 10 K were achieved. A preliminary investigation of the jet nozzle pyrolysis of 3-methyl-4-hydroxyiminoisoxaline-5-one was carried out and showed a different distribution of CHNO pyrolysis products to that observed in previous low pressure studies. by Oldenbourg Wissenschaftsverlag, Muenchen.
Two-Dimensional Penning Ionization Electron Spectroscopy of NNO, HCNO, and HNNN: Electronic Structure and the Interaction Potential with He*(23S) Metastable and Li(22S) Ground State Atoms
Pasinszki, Tibor,Kishimoto, Naoki,Ohno, Koichi
, p. 6746 - 6756 (2007/10/03)
The electronic structure and Penning ionization of NNO, HCNO, and HNNN upon collision with He*(23S) metastable atoms were studied using He I photoelectron and two-dimensional Penning ionization electron spectroscopies (2D-PIES). From the peak s
An FTIR study of the products of the reaction between CH2(X3B1) and NO
Grussdorf,Temps,Gg Wagner
, p. 134 - 138 (2007/10/03)
The product channels were investigated of the reaction between CH2(X3B1) and NO in the gas phase at room temperature and near ambient pressure. Mixtures of CH2CO/NO/Ar were photolyzed at λ = 312 nm in a static reactor. The reaction products were analyzed by Fourier transform infrared (FTIR) spectroscopy. The main product (≈84%) was found to be fulminic acid, HCNO. A second channel (≈15%) was found to lead to HCN. Other products which were detected include CO, N2O, H2O, HONO, H2CO, and CO2. These are formed (except for the CO from the CH2CO photodissociation) in consecutive reactions of the accompanying H atoms and OH radicals from the HCNO and HCN reaction channels. VCH Verlagsgesellschaft mbH, 1997.
Heterocumulenes, 9. Ethenedione oxime: Photochemical generation and matrix-spectroscopic identification
Maier, Guenther,Reisenauer, Hans Peter,Roether, Bernd,Eckwert, Juergen
, p. 303 - 306 (2007/10/03)
The title compound 2, a very close derivative of the still elusive ethenedione (1), was generated by photocleavage of the three different precursor molecules 7-9 in an argon matrix at 10 K. The structure elucidation of monoxime 2 is based on the comparison of the experimental and calculated IR spectrum. VCH Verlagsgesellschaft mbH, 1996.
Thermal decomposition of isomeric nitropropenes: A photoelectron spectroscopic study
Chin,Mok,Huang
, p. 2053 - 2056 (2007/10/02)
The thermal decomposition of the three isomers of nitropropene has been investigated in a flow system at low pressures, by using the characteristic bands of the photoelectron spectra of the products for their identification. Of the three isomers, 1- and 2-nitropropene decomposed to give products analogous to those found in the thermolysis of nitrostyrenes, implying some similarities in mechanism. On the other hand, 3-nitropropene gave similar products as 3-propenyl nitrite, indicating the isomerization of the nitro compound to the nitrite form as a probable first step for decomposition.
