Infra-Red Study of Tautomerism in Some Schiff Bases

Salman R. Salman, NA'il A.I. Saleh

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


Infra-Red spectra of a series of substituted salicylaldehyde and 2-hydroxynaphthaldehyde Schiff bases were used to investigate enol-keto tautomeric equilibrium. Two model compounds, namely, salicylidinaniline and naphthylidinequinolineamine Schiff bases were used to represent the enol and keto forms, respectively. From the IR spectra of the model compounds it was possible to assign the IR absorption for the C=O and the C=N groups in both the keto and the enol form. It was also possible to assign other absorptions which were either specific to the keto or the enol forms. Specific pattern were observed for all the studied compounds.

Original languageEnglish
Pages (from-to)1289-1300
Number of pages12
JournalSpectroscopy Letters
Issue number7
Publication statusPublished - 1997
Externally publishedYes


  • FTIR spectroscopy
  • Keto-enol tautomerism
  • NMR spectroscopy
  • Schiff bases
  • UV-Visible spectroscopy

ASJC Scopus subject areas

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


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