Electronic Spectra and Ionic forms of Some Derivatives of N1- Salicylaldehydbenzoylhydrazone

Nada U. Perisic-Janjic¹, Marija Lazarevic², J-Janjic³ and Ljiljana Klisareva²

¹Institute of Chemistry, Faculty of Sciences, 21000 Novi Sad, Trg Dositeja Obradovica 2, Yugoslavia ²Faculty of Technology, Skopje ³Institute of Physics, Faculty of Sciences, Novi sad

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ABSTRACT:

Electronic absorption spectra of ionic forms (anion, molecule, cation) of N1 -salicylaldehd-3,4,5-trimetoxyben- zoilhydrazone, N1 * salicylaldehyd-4 -metoxybenzoilhydrazone, N1 -salicylaldehyd -phenacetylhydrazone and N1- salicylaldehyd- 3-hydroxybenzoylhydrazone in aqueous solutions at 295 K were investigated. The corresponding acid-base equilibrium constants were determined by spectrophotometric method. The effect of chemical structure on protonation and dissociation process have been discussed.

KEYWORDS:

Electronic; Derivatives; N1- Salicylaldehydbenzoylhydrazone