ESR evidence for the cation radicals of tetrahydrofurans and dimethyl ether produced in a. gamma. -irradiated frozen matrix of trichlorofluoromethane

Journal Article · Thu Sep 03 00:00:00 EDT 1981 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j150618a001· OSTI ID:6293205

Kubodera, H ^[1]; Shida, T; Shimokoshi, K

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1. Kyoto Univ., Japan

Cation radicals of tetrahydrofuran, methyltetrahydrofuran, cis- and trans-dimethyltetrahydrofuran, and dimethyl ether have been produced for the first time in ..gamma..-irradiated solid solutions of trichlorofluoromethane. The hyperfine splitting constants of axial protons adjacent to the ethereal oxygen are found to be as large as 90 to 100 G for the cyclic ethers. The spectral changes observed on temperature elevation toward the melting point of the freon matrix are accounted for in terms of ring puckering, and the activation energy is estimated as 1.65 kcal/mol. The cation radicals undergo ion-molecule reactions to produce neutral radicals of the parent ether molecules.

• OSTI ID: 6293205
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 85:18; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
CATIONS
CHARGED PARTICLES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CHLORINATED ALIPHATIC HYDROCARBONS
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ELECTRON SPIN RESONANCE
ETHERS
FLUORINATED ALIPHATIC HYDROCARBONS
FURANS
GAMMA RADIATION
HALOGENATED ALIPHATIC HYDROCARBONS
HETEROCYCLIC COMPOUNDS
IONIZING RADIATIONS
IONS
LOW TEMPERATURE
MAGNETIC RESONANCE
MATERIALS
MATRIX MATERIALS
METHYL ETHER
MTHF
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADICALS
RADIOLYSIS
RESONANCE
TETRAHYDROFURAN