Electron spin resonance of transient radicals during pyrolysis and photolysis. Benzyl ether

Journal Article · Thu Mar 17 04:00:00 EST 1983 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100229a030· OSTI ID:6107633

Livingston, R; Zeldes, H

Benzyl ether has been pyrolyzed at 452, 474, and 497/sup 0/C at a pressure of 20.7 MPa. Benzyl has been observed by ESR, and product analyses have been made. The reaction C/sub 6/H/sub 5/CHOCH/sub 2/C/sub 6/H/sub 5/ ..-->.. C/sub 6/H/sub 5/CHO + C/sub 6/H/sub 5/CH/sub 2/ is part of a proposed scheme. This reaction was separately studied photolytically by preparing the reactant radical with benzyl ether and an initiator in benzene solution. Measurements from 105 to 155/sup 0/C at 6.9 MPa gave an activation energy of 15.5 kcal/mol (+-15%) and an estimate of the Arrhenius A factor of 1 x 10/sup 12/ s/sup -1/. The various results are discussed in terms of a free-radical chain reaction. Methylcyclohexadienyl was also prepared, and ESR parameters are given.

• Research Organization: Oak Ridge National Lab., TN
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6107633
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 87:6; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400500* -- Photochemistry
ALKANES
AROMATICS
ARYL RADICALS
BENZYL RADICALS
CHEMICAL REACTIONS
CYCLOALKANES
CYCLOHEXANE
DATA
DECOMPOSITION
DIENES
ELECTROMAGNETIC RADIATION
ELECTRON SPIN RESONANCE
ETHERS
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
POLYENES
PYROLYSIS
RADIATIONS
RADICALS
RESONANCE
SPECTRA
TEMPERATURE DEPENDENCE
THERMOCHEMICAL PROCESSES
ULTRAVIOLET RADIATION