Geometric model of trapped electrons in trehalose single crystals x-ray irradiated at 3 K. An EPR study

Journal Article · Sun May 01 00:00:00 EDT 1983 · J. Chem. Phys.; (United States)

OSTI ID:6158263

Samskog, P; Kispert, L D; Lund, A

Three different radicals were identified by EPR in x-ray irradiated single crystals of trehalose at 3 K. The species are the trapped electron, a hydroxy alkyl radical, and an alkoxy radical. The electron is trapped in an intermolecular site formed by two hydroxyl groups, one on the carbohydrate and the other on a water molecule as evidenced by the anisotropic proton hyperfine couplings. A geometric model for the trapping site is presented. The trapped electron decays by cleavage of an OH bond and the liberated hydrogen atom abstracts another hydrogen atom from an adjacent carbon atom forming a hydroxy alkyl radical. The site of the alkoxy radical has been identified. The primary reaction mechanism is discussed.

• Research Organization: Chemistry Department, The University of Alabama, Tuscaloosa, Alabama 35486
• OSTI ID: 6158263
• Journal Information: J. Chem. Phys.; (United States), Vol. 78:9
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
HYDROXY COMPOUNDS
CHEMICAL RADIATION EFFECTS
ALKOXY RADICALS
ALKYL RADICALS
ELECTRON SPIN RESONANCE
MONOCRYSTALS
TRAPPED ELECTRONS
ULTRALOW TEMPERATURE
X RADIATION
CHEMISTRY
CRYSTALS
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
IONIZING RADIATIONS
LEPTONS
MAGNETIC RESONANCE
ORGANIC COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADICALS
RESONANCE
400600* - Radiation Chemistry