An EPR study of VO2+ ions in arsanilic acid [C6H4AsNO (H2O)(2)] single crystals

Duzgun F., Karabulut B.

JOURNAL OF MOLECULAR STRUCTURE, vol.834, pp.136-140, 2007 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 834
  • Publication Date: 2007
  • Doi Number: 10.1016/j.molstruc.2006.11.008
  • Journal Name: JOURNAL OF MOLECULAR STRUCTURE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.136-140
  • Keywords: EPR, arsanilic acid, powder spectrum, vanadyl ion doped, ELECTRON-PARAMAGNETIC-RES, OPTICAL-ABSORPTION, VANADYL ION, SPIN-RESONANCE, CITRATE, COEFFICIENTS, SPECTRA, CU2+, ESR
  • Ondokuz Mayıs University Affiliated: No

Abstract

EPR spectra of VO2+ ions doped [C6H4AsNO (H2O)(2)] and powder have been studied at room temperatures. The detailed EPR analysis have shown that two different VO2+ Complexes are located in different chemical environments, and each environment contains two magnetically inequvalent VO2+ sites in distinct orientations occupying interstitial positions in the lattice and show very high angular dependence. The EPR spectra of VO2+ are characteristic of tetragonally compressed complex. The spin Hamiltonian parameters obtained from single crystal data for two VO2+ Complexes. These are found to be axially symmetric. The EPR spin-Hamiltonien parameters have been used to evaluate the bonding coefficients of the vanadyl ion in the arsanilic acid lattice. (C) 2006 Elsevier B.V. All rights reserved.