Journal of Solution Chemistry

, Volume 20, Issue 7, pp 643–668

Structure determination of zinc iodide complexes formed in aqueous solution

Authors

  • Hisanobu Wakita
    • Department of Chemistry, Faculty of ScienceFukuoka University
  • Georg Johansson
    • Coordination Chemistry LaboratoriesInstitute for Molecular Science
  • Magnus Sandström
    • Department of Chemistry, Faculty of ScienceFukuoka University
    • Department of Inorganic ChemistryRoyal Institute of Technology
  • Peter L. Goggin
    • School of ChemistryThe University
  • Hitoshi Ohtaki
    • Department of Chemistry, Faculty of ScienceFukuoka University
    • Coordination Chemistry LaboratoriesInstitute for Molecular Science
Article

DOI: 10.1007/BF00650714

Cite this article as:
Wakita, H., Johansson, G., Sandström, M. et al. J Solution Chem (1991) 20: 643. doi:10.1007/BF00650714

Abstract

Structures of the complexes formed in aqueous solutions between zinc(II) and iodide ions have been determined from large-angle X-ray scattering, Raman and far-IR measurements. The coordination in the hydrated Zn2+ hexaaqua ion and the first iodide complex, [ZnI]+, is octahedral, but is changed into tetrahedral in the higher complexes, [ZnI2(H2O)2], [ZnI3(H2O)] and [ZnI4]2−. The Zn-I bond length is 2.635(4)Å in the [ZnI4]2− ion and slightly shorter, 2.592(6)Å, in the two lower tetrahedral complexes. In the octahedral [ZnI(H2O)5]+ complex the Zn-I bond length is 2.90(1)Å. The Zn-O bonding distances in the complexes are approximately the same as that in the hydrated Zn2+ ion, 2.10(1)Å.

Key words

Large angle X-ray diffractionRaman spectrafar-IR spectrastructure of zinc(II) iodide complexeshydration of zinc(II) ions

Copyright information

© Plenum Publishing Corporation 1991