ELECTRON SPIN RESONANCE SPECTRA OF S₂O₂− IN IRRADIATED THIOSULFATE SINGLE CRYSTALS

Abstract

Single crystals of Na2S203.5H20 were irradiated and examined, a t room temperature, with an e.s.r. spectrometer. Two radicals are present: the species present in highest concentration is the other species has not yet been identified.

Electron paramagnetic resonance of SO2-on magnesium oxide

“…There is no complete agreement among different authors concerning the assignment of the various epr signals to chemical species. [12][13][14][15][16][17][18] In general, however, it appears that S02is well described in the literature and its characteristics established. the oxidation or reduction of S02 on metal oxide catalysts.…”

Identification of some sulfur-containing radicals trapped in single crystals

“…Radicals A and B have been variously identified as: an F center and S03-,8 an S atom and S03-,9 and S02-and S02+,10 respectively. However, radical A has now been shown to possess two sulfur atoms,* 11 which, together with its almost isotropic ¡7-tensor, suggests that it is S202-. This radical is similar to S03- 12 except that one oxygen is replaced by sulfur.…”

Paramagnetic Centers in Irradiated Potassium Sulfate

“…The crystal habit mas inferred goniometrically and confirmed by X-ray diffraction photographs, being pris~natic along [loo] and developing (021). The crystals were irradiated with a Philips X-ray tube type 25623-62, and examined after irradiation with a IJarian V-4502 spectrometer previously described (11). To determine the g-tensors of the radicals the ICzSO., crystals were mounted on a two-circle goniometer (12) and rotated about each of the orthorhombic axes in turn, spectra being talcen every 10".…”