An evaluation was made of the presence of paramagnetic ions in the host lattice of CuI2SO3.CdIISO 3.2H2O by the electron paramagnetic resonance (EPR) technique, using copper(II) ions as paramagnetic probes. The existing M I and MII complexation sites in the double sufite structure were successfully differentiated. The results indicate that the CuI2SO3.CdIISO3.2H 2O structure was doped with CuII ions in the two metal ion substitutional positions. The low g∥/A∥ ratio for the CuII probe in the distorted octahedral site resulted from the interaction of copper ions with oxygen donor atoms in a distorted tetragonal environment, with elongation of the molecule in the z direction. The very low value of the A33 hyperfine coupling constant was explained considering the admixture of the dx2-y2 and dz2 orbitals and the almost trigonal pyramidal structure of the other site. ©2007 Sociedade Brasileira de Química.
CITATION STYLE
Silva, L. A., De Andrade, J. B., & Mangrich, A. S. (2007). Use of Cu2+ as a metal ion probe for the EPR study of metal complexation sites in the double sulfite CuI2SO 3·CdIISO3·2H2O. Journal of the Brazilian Chemical Society, 18(3), 607–610. https://doi.org/10.1590/S0103-50532007000300018
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