Variation in coordinative property of two different N2O 2 donor Schiff base ligands with nickel(II) and cobalt(III) ions: Characterisation and single crystal structure elucidation

Aurkie Ray, Sambuddha Banerjee, Georgina M. Rosair, Volker Gramlich, Samiran Mitra

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

A nickel(II) and a cobalt(III) complex of two different potentially tetradentate Schiff bases with different binding modes have been synthesised. The nickel(II) complex [NiL1]·CH3OH (1) was formed, on reacting the metal salt with a perfectly symmetrical N2O 2 tetradentate Schiff base ligand H 2 L 1 , which is the 1:2 condensation product of 1,3-diamino propane and 2-hydroxyacetophenone. The cobalt(III) complex [Co(HL2) 3]·(ClO4)3·H2O (2) was synthesised using an asymmetric N2O2 tetradentate Schiff base ligand HL 2 on condensing N,N-dimethyl-1,3-diamino propane with o-vanillin in 1:1 mmol ratio. Although both Schiff bases are N2O 2 functionalised, they showed variation in their coordinative property with nickel(II) and cobalt(III) ions. Both the complexes were characterised by IR spectroscopy and cyclic voltammetry and their single crystal structures clearly indicate that 1 is a mononuclear species whereas 2 is a hydrogen-bonded dimer. © 2008 Springer Science+Business Media, LLC.

Original languageEnglish
Pages (from-to)459-465
Number of pages7
JournalStructural Chemistry
Volume19
Issue number3
DOIs
Publication statusPublished - Jun 2008

Keywords

  • Co(III)
  • Denticity
  • Ni(II)
  • Schiff bases
  • X-ray crystal structures

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