An E.S.R. study of a diluted single crystal of potassium vanadyl oxalate

Abstract

The E.S.R. spectrum of potassium vanadyl oxalate has been measured in dilute solutions in a potassium titanyl oxalate crystal. The crystal contains one paramagnetic species and all the paramagnetic units in the crystal lie parallel to one another and are axially symmetric. There is no evidence of any interaction between different vanadyl ions so it appears that potassium vanadyl oxalate in the crystal is a monomer and not a dimer as has been postulated [1]. The hyperfine splitting constants confirm the predictions of ligand field theory as to the orbital occupied by the unpaired electron.