ChemInform Abstract: Free-Radical Carbonylation. Efficient Trapping of Carbon Monoxide by Carbon Radicals.

ChemInform ◽  
1990 ◽  
Vol 21 (19) ◽  
Author(s):  
I. RYU ◽  
K. KUSANO ◽  
A. OGAWA ◽  
N. KAMBE ◽  
N. SONODA
Keyword(s):  
Carbon Monoxide ◽  
Free Radical ◽  
Carbon Radicals

Free radical carbonylation. Efficient trapping of carbon monoxide by carbon radicals

1990 ◽  
Vol 112 (3) ◽  
pp. 1295-1297 ◽  
Author(s):  
Ilhyong Ryu ◽  
Kazuya Kusano ◽  
Akiya Ogawa ◽  
Nobuaki Kambe ◽  
Noboru Sonoda
Keyword(s):  
Carbon Monoxide ◽  
Free Radical ◽  
Carbon Radicals

THE LUMINOUS MANTLE OF FUEL-RICH OXYACETYLENE FLAMES: II. FREE RADICAL AND CONTINUUM INTENSITIES, AND THEIR INFLUENCE ON C3 EMISSIONS

1957 ◽  
Vol 35 (11) ◽  
pp. 1275-1283 ◽  
Author(s):  
G. V. Marr
Keyword(s):  
Carbon Monoxide ◽  
Free Radical ◽  
Reaction Mechanisms ◽  
Experimental Error ◽  
Carbon Particle ◽  
Black Body ◽  
Reaction Scheme ◽  
Band Head ◽  
Ultraviolet Continuum ◽  
Background Continuum

The spectroscopic emissions from the luminous mantle of the oxyacetylene flame have been examined over a range of burning mixtures from 2.3 to 4.2 times stoichiometric. Plots of the band-head intensities for the radicals C2, C3, CH, and CN for different burning mixtures and for vertical traverses through the flame are reported. From a study of the variation of the background continuum from 3000 Å to 5200 Å with burning mixtures, the over-all continuum may be considered to consist of (a) a black-body carbon particle continuum having an energy distribution corresponding to a temperature of 2900 ± 200° K., (b) a continuum associated with the C3 radical emissions extending from 3500 Å to 4600 Å with a maximum at 4000 Å, and (c) an ultraviolet continuum extending from below 3000 Å to 5000 Å which appears similar to the carbon-monoxide flame continuum. Within the limits of experimental error the variation of the C3 bands and their associated continuum are identical. Possible reaction mechanisms for the production of the C3 emissions are considered and they probably may be accounted for by the reaction scheme[Formula: see text]

FREE RADICAL RECOMBINATION IN THE PHOTOLYSIS OF ACETONE

1955 ◽  
Vol 33 (5) ◽  
pp. 750-754 ◽  
Author(s):  
S. N. Naldrett
Keyword(s):  
Carbon Monoxide ◽  
Free Radical ◽  
Quantum Efficiency ◽  
Room Temperature ◽  
Methyl Groups ◽  
Carbon 14 ◽  
Radical Recombination

(CH3CO)2-1-C14 (I) was prepared by irradiating (CH3)2CO in the presence of CH3I-C14. Acetone was then irradiated at room temperature with light of 2537 Å in the presence of (I). Radioactivity was found in all products which contained methyl groups but not in any carbon monoxide product. The amount of carbon-14 ultimately found in acetone confirms that the quantum efficiency of the primary photolytic process is nearly unity and that extensive recombination of methyl and acetyl radicals to form acetone is responsible for the low over-all quantum efficiency of decomposition.

Molecular rearrangements. Part XVI. Thermolysis and photolysis of N-benzyldiphenylamine and N-phenylacetyldiphenylamine

1980 ◽  
Vol 58 (12) ◽  
pp. 1229-1232 ◽  
Author(s):  
M. Z. A. Badr ◽  
M. M. Aly ◽  
A. M. Fahmy
Keyword(s):  
Carbon Monoxide ◽  
Free Radical ◽  
Radical Mechanism ◽  
Molecular Rearrangements ◽  
Free Radical Mechanism

Heating N-phenylacetyldiphenylamine in a sealed tube at 360 °C gave rise to carbon monoxide, bibenzyl, toluene, stilbene, diphenylmethane, aniline, carbazole, N-benzylcarbazole, acridine, 9-phenylacridine, 4-aminotriphenylmethane, diphenylamine, p-benzyldiphenylamine, and o-aminodiphenylmethane. A similar result was also obtained on heating N-benzyldiphenylamine, with the exception of carbon monoxide. Such results in addition to those obtained from photolysis of N-phenylacetyldiphenylamine are interpreted in terms of a free-radical mechanism.

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