Single crystal EPR study of VO(II) in magnesium potassium phosphate hexahydrate: a case of two substitutional vanadyl ions

EPR and optical studies of VO2+ doped diglycine calcium chloride tetrahydrate single crystals

“…The EPR spectra of the VO 2+ ion have revealed some interesting features about defect properties, host lattice effects, structural changes and orientational properties of the host lattice [4][5][6][7]. The optical absorption study provides the structure of energy levels of the metal ion and crystal field parameters.…”

Electron paramagnetic resonance and optical absorption study of VO2+-doped sodium zinc sulfate tetrahydrate single crystals

“…The study of vanadyl ions in various types of lattices may be classified into two types: one in which this ion has a fixed orientation and is free to rotate about a certain axis; the ligands being halogen or nitrate ions, and the second in which the ion is preferentially oriented, for lattices having water of hydration, sulfate ions or other oxygen-rich groups [3]. The EPR spectra of the VO 2+ ion have revealed some interesting features concerning defect properties, host lattice effects, structural changes and orientational properties of the host lattice [4][5][6][7]. An optical absorption study provides the energy level structure of the metal ion and hence the crystal field parameters.…”

“…Vanadyl complexes have been a subject of interest to a number of researchers for many years [4][5][6][7][8][9][10][11][12]. However, little work has been reported on double sulfates of monovalent and divalent atoms other than Tutton salts [13].…”

EPR and optical investigation of VO(II) in Zn(C3H3O4)2(H2O)2 single crystals: An interstitial site

“…In a large number of EPR studies on vanadyl ion in various host lattices [2][3][4][5][6][7][8][9][10][11], experiments have shown that the V(IV) ion of VO(II) is surrounded by a distorted octahedron in which the vanadyl bond VQO has a well-defined orientation [12], since the EPR spectrum is very sensitive to the crystalline environment. The behaviour of unpaired electron in VO(II) complexes is dominated by the strong VQO bond.…”