ESR study of an x-ray irradiated Ph/sub 3/AsF/sub 2/ single crystal
X-irradiation of Ph/sub 3/AsF/sub 2/ single crystals produces a radical exhibiting hyperfine coupling with one /sup 75/As nucleus and two /sup 19/F nuclei. The three hyperfine tensors are determined and show that the unpaired electron is delocalized in 4s (17%) and 4p (55%) arsenic orbitals and in a 2p (approx.12%) orbital of each fluorine atom. The ESR parameters are consistent with either Ph/sub 2/AsF/sub 2/ or Ph/sub 3/AsF/sup -//sub 2/ but theoretical estimates of the geometry of these two species together with the experimental angle of 135/sup 0/ between the principal axes of the two fluorine hyperfine coupling tensors are more in accord with the structure Ph/sub 3/AsF/sup -//sub 2/.
- Research Organization:
- Department of Chemical Physics, University of Geneva, 30, quai Ernest-Ansermet, 1211 Geneva, Switzerland
- OSTI ID:
- 5507698
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 76:11; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400600* -- Radiation Chemistry
ARSENIC COMPOUNDS
ARSENIC FLUORIDES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CRYSTALS
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ELECTRON SPIN RESONANCE
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HYPERFINE STRUCTURE
IONIZING RADIATIONS
MAGNETIC RESONANCE
MONOCRYSTALS
PHOSPHORUS COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADICALS
RADIOLYSIS
RESONANCE
X RADIATION