Mossbauer and FTIR spectroscopic studies of iron anthranilates: Coordination, structure and some ecological aspects of iron complexation

A. A. Kamnev, E. Kuzmann, Yu D. Perfiliev, Gy Vankó, A. Vértes

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24 Citations (Scopus)

Abstract

The data on the coordination and structure of iron(II) and iron(III) anthranilates in the solid state and in aqueous medium are presented and discussed, as studied using Mossbauer (for solid products and frozen solutions) and FTIR spectroscopy (for solid samples). Whereas, in slightly acidic nitrate solutions under aerobic conditions ferric ions can still be gradually reduced by anthranilic (o-aminobenzoic) acid, which may have some ecological significance, in circumneutral media this process is retarded. Mossbauer parameters calculated for iron(II) and iron(III) anthranilates, as well as characteristic vibration modes of certain functional groups involved in coordination with iron cations are discussed. The FTIR data obtained for ferrous anthranilates, as compared to anthranilic acid, definitely exhibit the direct involvement of both the carboxylic and the amino groups of anthranilic acid in coordination with iron.

Original languageEnglish
Pages (from-to)703-711
Number of pages9
JournalJournal of Molecular Structure
Volume482-483
DOIs
Publication statusPublished - May 25 1999

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Keywords

  • Anthranilic acid
  • Fourier transform infrared spectroscopy
  • Iron coordination
  • Iron(II) anthranilate
  • Iron(III) anthranilate
  • Mossbauer spectroscopy

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy
  • Organic Chemistry
  • Inorganic Chemistry

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