Mössbauer study of a rigid organic microemulsion used as carrier for fixing a methanolic solution of ascorbic acid complexes of iron

K. Burger, Zs Nemes-Vetéssy, Gy Vankó, Z. Homonnay, A. Vértes, I. Dékány, M. Szekeres

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Abstract

A Mössbauer spectroscopic study of the system iron(II) chloride + ascorbic acid dissolved in methanol, containing the iron(II)-ascorbate complex cation in equilibrium with chloride ions, revealed that when the methanolic solution was fixed as submicroscopic (nanosize) droplets in the cavities in a solid carrier (microemulstion or porous silicate), there was a significantly decreased electric field gradient around the iron centre, indicating the direct coordination of chloride to the iron(II), leading to an ascorbate-chloro mixed complex. The change is due to the different solvation of the species in the nanosize holes in the carrier.

Original languageEnglish
Pages (from-to)799-804
Number of pages6
JournalSpectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Volume51
Issue number5
DOIs
Publication statusPublished - May 1995

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ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Spectroscopy

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