Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

header
Reach Us reach to JOCPR whatsapp-JOCPR +44 1625708989
All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Original Articles: 2015 Vol: 7 Issue: 6

Formation constants of some transition metal complexes of 2-hydroxybenzaldehyde [(1Z, 2E)-2-(hydroxyimino)-1-methyl propylidene] hydrazone in mixed Solvent System

Abstract

A new ligand 2-hydroxybenzaldehyde[(1Z,2E)-2-(hydroxyimino)-1-methyl propylidine] hydrazone (HBHMPH) synthesised and reported for the first time in this work has been studied potentiometricaly in mixed solvent system (Dioxane + water ) at various ionic strengths to obtain the acidity constant of the ligand. Further, due to the perceived interests in the coordinating behaviour of this ligand with various transition metal ions, the potentiometric studies in solution similar to those for the ligand were carried out to obtain the metal-ligand formation constants. The studies revealed that the ligand behaves a monobasic acid in spite of two probable dissociable protons being present in it viz. the oximino proton and the phenolic proton. The nature of this monobasic character is studied. The metal complexes of Co (II), Ni (II), Cu (II), and Zn (II) show that the most stable species in the ML2 complex.

http://sacs17.amberton.edu/

rtp slot demo