Article

Combined Raman and 51V NMR spectroscopic study of vanadium (V) oligomerization in aqueous alkaline solutions

  1. Ana Margarida Amado1,
  2. M. Aureliano2,
  3. Paulo J. A. Riberio-Claro1,*,
  4. J. J. C. Teixeira-Dias1

Article first published online: 14 APR 2005

DOI: 10.1002/jrs.1250241011

Issue

Journal of Raman Spectroscopy

Journal of Raman Spectroscopy

Volume 24, Issue 10, pages 699–703, October 1993

Additional Information

How to Cite

Amado, A. M., Aureliano, M., Riberio-Claro, P. J. A. and Teixeira-Dias, J. J. C. (1993), Combined Raman and 51V NMR spectroscopic study of vanadium (V) oligomerization in aqueous alkaline solutions. Journal of Raman Spectroscopy, 24: 699–703. doi: 10.1002/jrs.1250241011

Author Information

  1. 1

    Departamento de Quimica, Universidade de Coimbra, P-3049 Coimbra, Portugal

  2. 2

    Departamento de Zoologia, Universidade de Coimbra, P-3049 Coimbra, Portugal

*Departamento de Quimica, Universidade de Coimbra, P-3049 Coimbra, Portugal

Publication History

  1. Issue published online: 14 APR 2005
  2. Article first published online: 14 APR 2005
  3. Manuscript Accepted: 17 JUN 1993
  4. Manuscript Received: 30 MAR 1993

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Abstract

The Raman spectra of aqueous vanadium (V) solutions at different pH values, ranging from 13.1 to 7.0, are presented. The dominant bands in the range 700–1100 cm−1 are assigned to the VO symmetrical stretching of the different oligomers, using additional information from 51V NMR spectra and empirical models. The effects of pH, concentration and ionic strength on the oligomerization equilibria are discussed. The ionic strength is found to affect significantly the oligomer composition of vanadate solutions, which is of interest in biochemical and biological studies.

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