Journal of Solution Chemistry

, Volume 11, Issue 1, pp 17–26 | Cite as

Zinc-67 NMR study of zinc ions in water and in some nonaqueous and mixed solvents

  • Zhi-fen Li
  • Alexander I. Popov
Article

Abstract

Solutions of zinc salts in water, methanol (MeOH), dimethylformamide (DMF) and binary mixtures of water with the two nonaqueous solvents were studied by zinc-67 NMR measurements. Anhydrous zinc nitrate solutions in DMF and MeOH show upfield, concentration independent, chemical shifts at −27 and −19 ppm, respectively, vs. the aqueous solution standard. Addition of DMF or MeOH to an aqueous solution of a zinc salt results in a diamagnetic shift but for the addition of acetonitrile a paramagnetic shift results. In all cases the signal was broadened very considerably, e.g., in ZnCl2 solution the linewidth increased from ∼40 to ∼600 Hz in going from water to 35% aqueous MeOH. Both67Zn and13C NMR failed to show any complexation of Zn2+ ion by crown ethers in aqueous solution. A gradual addition of EDTA, of diaza-18-crown-6 or of tetraazacyclotetradecane resulted in an immediate broadening of the67Zn signal which became undetectable when one equivalent of a ligand was added.

Key words

Zinc-67 NMR nonaqueous solution zinc complexes crown ethers EDTA methanol dimethylformamide 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    R. K. Harris and B. E. Mann,NMR and the Periodic Table (Academic Press, New York, 1978).Google Scholar
  2. 2.
    A. I. Popov,Pure and Appl. Chem. 51, 101 (1979).Google Scholar
  3. 3.
    B. W. Epperlein, H. Crager, O. Lutz, and A. Schwenk,Z. Naturforsch. 29A, 660, 1553 (1974).Google Scholar
  4. 4.
    G. E. Maciel, L. Simeral, and J. J. H. Ackerman,J. Phys. Chem. 81, 263 (1977).Google Scholar
  5. 5.
    C. C. Addison, J. Lewis, and R. Thompson,J. Chem. Soc. 1951, 2829.Google Scholar
  6. 6.
    B. Spiess, F. Arnaud-Neu, and M. J. Schwing-Weill,Helv. Chim. Acta. 62, 1531 (1979).Google Scholar
  7. 7.
    C. J. Pedersen,J. Am. Chem. Soc. 89 2495, 7017 (1967).Google Scholar
  8. 8.
    C. J. Pedersen,J. Am. Chem. Soc. 92 386 (1970).Google Scholar
  9. 9.
    R. M. Izatt, R. E. Terry, D. P. Nelson, Y. Cahn, D. J. Eatough, J. S. Bradshaw, L. D. Hansen, and J. J. Christensen,J. Am. Chem. Soc. 98, 7626 (1976).Google Scholar
  10. 10.
    F. Arnaud-Neu, B. Spiess and M. J. Schwing-Weill,Helv. Chim. Acta. 60, 2633 (1977);62, 1531 (1979).Google Scholar
  11. 11.
    M. Kodama and E. Kimura,J. Chem. Soc. Dalton 1977, 2269.Google Scholar

Copyright information

© Plenum Publishing Corporation 1982

Authors and Affiliations

  • Zhi-fen Li
    • 1
  • Alexander I. Popov
    • 1
  1. 1.Department of ChemistryMichigan State UniversityEast LansingUSA

Personalised recommendations