title: EPR studies of VO2+ doped bis(saccharinato)bis(pyridine) zinc (II) single crystals.
abstract: Electron paramagnetic resonance (EPR) studies of vanadyl ions, VO2+, as paramagnetic impurity in bis(saccharinato)bis(pyridine)zinc (II) [hereafter, Zn(sac)2(py)2] are made at room temperature. The angular variation of the EPR spectra has shown that three different VO2+ complexes are located in different chemical environments and each environment contains two magnetically inequivalent VO2+ sites in distinct orientations occupying substitutional positions in the lattice and show very high angular dependence. The spin-Hamiltonian parameters are determined and these parameters have been used to assess the bonding coefficients of the VO2+ ion in [Zn(sac)2(py)2] lattice. The values of spin-Hamiltonian parameters indicate that the VO2+ ions in [Zn(sac)2(py)2] were present in octahedral coordination with a tetragonal compression and belong to C4v symmetry. The parallel and perpendicular components of axially symmetric g and hyperfine tensors are evaluated and the results are discussed.
authors.affiliation: Department of Physics, Faculty of Arts and Sciences, Ondokuz Mayis University, Kurupelit, 55139 Samsun, Turkey.
authors.forename: Esat
authors.initials: E
authors.lastname: Bozkurt
authors.forename: Bünyamin
authors.initials: B
authors.lastname: Karabulut
authors.forename: Ibrahim
authors.initials: I
authors.lastname: Kartal
mesh_terms: D003460:Crystallization; D004578:Electron Spin Resonance Spectroscopy; D009942:Organometallic Compounds / Q000737:chemistry*; D014638:Vanadates / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; C541158:bis(saccharinato)bis(pyridine) zinc (II); C069276:peroxovanadate; D014638:Vanadates