Affordable Access

Spectroscopic studies on gallic acid and its azo derivatives and their iron(III) complexes

Authors
Publisher
Elsevier B.V.
Publication Date
Volume
120
Identifiers
DOI: 10.1016/j.saa.2013.10.054
Keywords
  • Gallic Acid
  • Dissociation Constants
  • Spectrophotometric Methods
  • Synthesis
  • Complexes
  • Dta
Disciplines
  • Chemistry

Abstract

Abstract Azo gallic derivatives and their iron(III) complexes were synthesized and characterized. The stereochemistry and the mode of bonding of the complexes were achieved based on elemental analysis, UV–Vis and IR. The thermal behaviors of the complexes were studied. The effect of pH on the electronic absorption spectra of gallic acid and its azo derivatives are discussed. Different spectroscopic methods (molar ratio, straight line method, continuous variation, slope ratio and successive method) are applied for determination of stoichiometry and pK values for the complex formation of gallic acid with iron(III) in aqueous media. Iron(III) complexes of gallic acid is formed with different ratio: 1:1, 1:2, 1:3 and 1:4 (M:L).

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Synthesis and spectroscopic characterization of ga...

on Journal of Molecular Structure Apr 25, 2012

Photochemical and spectroscopic studies of complex...

on Inorganica Chimica Acta Jan 01, 1994

NMR and electron spectroscopic studies of La (III)...

on Inorganic and Nuclear Chemistr... Jan 01, 1981

Reactivity of an iron(III) complex of gallic acid

on Inorganica Chimica Acta Jan 01, 1987
More articles like this..