Abstract
An ESR study of single crystals of Mg(H2O)6H2EDTA doped with very small concentrations of vanadyl ions showed the spectra and spin-Hamiltonian parameters to be totally different from those obtained in an earlier study with higher concentrations of VO2+. The results obtained in the present study are comparable with the data of VO(H2O)52+ in other hydrated salts like alums, etc. In low concentrations, VO2+ takes up two preferred orientations along Mg–Ow1 and Mg–Ow2 in the host octahedron. The hyperfine splitting is slightly less than that in other hydrated salts, most probably due to the strong hydrogen bonding involving the metal–water octahedra in Mg(H2O)6H2EDTA.
Published Version
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