Structure of radical pairs in irradiated single crystal of n-eicosane as studied by electron spin resonance

Journal Article · Wed Sep 15 04:00:00 EDT 1976 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.433345· OSTI ID:7356834

Fujimura, T; Tamura, N

The ESR spectra of a single crystal of n-eicosane have been analyzed. The angular dependence of the fine splitting in ..delta..M/sub s/=1 spectra reveals that several different radical pairs are produced in the single crystal of n-eicosane irradiated at 77/sup 0/K. Five different pairs are clearly identified; they are interchain type. Among these five radical pairs four species are produced in the adjacent chains aligned along the b axis; their interspin distances are 4.42, 4.54, 5.22, and 5.33 A. One other is produced in the chains along the a axis and has the interspin distance of 4.25 A. The presence of the intrachain radical pairs (biradical) is also suggested. The structure of radical pair found in n-eicosane was compared with that found in oriented polyethylene. (AIP)

• Research Organization: Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute, Takasaki, Gunma-ken, 370-12, Japan
• OSTI ID: 7356834
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 65:6; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
ALKANES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CRYSTALS
DECOMPOSITION
ELECTRON SPIN RESONANCE
HYDROCARBONS
MAGNETIC RESONANCE
MONOCRYSTALS
ORGANIC COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADICALS
RADIOLYSIS
RESONANCE