Free radical reactions in. beta. -methyl-D-galactopyranoside x-irradiated at 77 K and annealed to 320 K: an ESR/ENDOR study

Journal Article · Wed Aug 01 04:00:00 EDT 1984 · Radiat. Res.; (United States)

DOI:https://doi.org/10.2307/3576370· OSTI ID:6822511

Horning, T; Bernhard, W A

X irradiation of ..beta..-methyl-D-galactopyranoside single crystals at 77 K leads to the trapping of at least three free radical products, two of which have been identified. The major free radical product is due to the loss of hydrogen from the methyl group giving a CH/sub 2/OR radical. A minor product, accounting for approx.8% of the spectral intensity, is an alkoxy radical centered at O4. The CH/sub 2/OR radical decays at 200 K, two-thirds of the population leading to nonradical products via recombination and one-third of the population converting to a C3-centered, deprotonated, secondary, hydroxyalkyl radical (C3-dsHA). On warming to 300 K the C3-dsHA radical converts, with a stoichiometry of approx.1:1, to a radical characterized by an ..cap alpha.. and ..beta.. hfc tensor.

• Research Organization: Univ. of Rochester School of Medicine and Dentistry, New York
• OSTI ID: 6822511
• Journal Information: Radiat. Res.; (United States), Journal Name: Radiat. Res.; (United States) Vol. 99:2; ISSN RAREA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
ALDEHYDES
ALKOXY RADICALS
ALKYL RADICALS
ANNEALING
CARBOHYDRATES
DATA
ELECTROMAGNETIC RADIATION
ELECTRON SPIN RESONANCE
ENDOR
EXPERIMENTAL DATA
HEAT TREATMENTS
HEXOSES
INFORMATION
IONIZING RADIATIONS
MAGNETIC RESONANCE
MONOSACCHARIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
RADIATIONS
RADICALS
RESONANCE
SACCHARIDES
STOICHIOMETRY
X RADIATION