Mössbauer and NMR study of the N-D-gluconylglycine complex of dimethyltin(IV) and the ascorbic acid-chloride mixed complex of iron(II) in solutions fixed as nanosize droplets in solid matrixes

K. Burger, N. Buzás, K. Gajda-Schrantz, T. Gajda, Zs Nemes-Vetéssy, A. Vértes, E. Kuzmann, I. Dékány, M. Szekeres

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Abstract

Combined NMR and Mössbauer investigations were performed on two coordination chemical models of biological interest: an aqueous solution of the N-D-gluconylglycine complex of dimethyltin(IV), and methanolic and aqueous solutions of the ascorbic acid-chloride mixed complex of iron(II). When these solutions were fixed as nanosize droplets in solid matrixes, significant changes occurred in both the structure and the composition of the coordination spheres of the central atoms in the complexes situated in the bulk positions with no direct connection to the surfaces of the holes in the matrix. The phenomenon was attributed to the significant decrease in solvent activity in the pores of the matrix due to the appreciable amount of surface-bound solvent in the system. The model mimics coordination chemical systems in cell tissues.

Original languageEnglish
Pages (from-to)2525-2536
Number of pages12
JournalSpectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume53
Issue number14
DOIs
Publication statusPublished - dec. 1997

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ASJC Scopus subject areas

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

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