ESR study of 77 K alkoxy and hydroxyalkyl radicals in x-ray irradiated trehalose single crystals

Journal Article · Wed Sep 01 00:00:00 EDT 1982 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1002/chin.198247135· OSTI ID:5145869

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

Four different alkoxy radicals were identified by ESR studies in x-ray irradiated single crystals of trehalose. The radical sites are O/sup prime//sub 2/(I), O/sub 2/(II), O/sup prime//sub 3/(III), and the probable ring oxygen O/sub 5/(IV). All alkoxy radicals exhibit one or two ..beta..-proton couplings. An additional coupling to a ..gamma.. proton for radical II is observed. The difference in the g/sub max/ value for the alkoxy radicals is discussed in terms of the type of hydrogen bonding involved. Two hydroxyalkyl radicals VI and VII were also produced at 77 K. Storage of crystals for one week results in decay of radicals I and II. Alkoxy radical II transform into a C/sub 6/-centered hydroxyalkyl radical V.

• Research Organization: Chemistry Department, The University of Alabama, Tuscaloosa, Alabama 35486
• OSTI ID: 5145869
• Journal Information: J. Chem. Phys.; (United States), Vol. 77:5
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
ALKOXY RADICALS
ELECTRON SPIN RESONANCE
CARBOHYDRATES
RADIOLYSIS
HYDROXY COMPOUNDS
LOW TEMPERATURE
X RADIATION
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DECOMPOSITION
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
MAGNETIC RESONANCE
ORGANIC COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADICALS
RESONANCE
400600* - Radiation Chemistry