Two Zn(II) and one Mn(II) complexes using two different hydrazone ligands: Spectroscopic studies and structural aspects

Aurkie Ray, Sambuddha Banerjee, Soma Sen, Ray J. Butcher, Georgina M. Rosair, Maria T. Garland, Samiran Mitra

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Three new coordination complexes of Zn(II) and Mn(II) have been synthesised using two different tridentate N,N,O donor hydrazone ligands, Hpbh and Hacpbh respectively. The complexes [Zn(pbh)2] (1) and [Zn(acpbh) 2] (2) have been synthesized by the treatment of ZnSO 4·7H2O with Hpbh and Hacpbh hydrazone ligands, respectively. The Mn(II) complex [Mn(acpbh)2] (3) was obtained on reacting Mn(NO3)2·4H2O with the ligand Hacpbh. The ligands Hpbh and Hacpbh were prepared by condensing pyridine-2-carboxaldehyde and 2-acetylpyridine with benzhydrazide respectively. Inspite of varying the carbonyl functionality attached to the pyridine moiety present in the hydrazone ligands in both the Schiff bases, we obtained three mononuclear complexes 1, 2, and 3 which were clearly characterized from single crystal X-ray diffraction studies. Spectroscopic investigations like IR and UV/Vis have been carried out for 1, 2, and 3. Fluorescence studies have been performed for 1 and 2. For 3 cyclic voltammetry, room temperature magnetic study and EPR measurements have been recorded. © 2007 Springer Science+Business Media, LLC.

Original languageEnglish
Pages (from-to)209-217
Number of pages9
JournalStructural Chemistry
Volume19
Issue number2
DOIs
Publication statusPublished - Apr 2008

Keywords

  • EPR
  • Flourescence
  • Hydrazone complexes
  • Manganese(II)
  • X-ray crystal structure
  • Zinc(II)

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