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Journal of Chemistry
Volume 2013, Article ID 947325, 5 pages
http://dx.doi.org/10.1155/2013/947325
Research Article

Synthesis of Oxovanadium(IV) Complexes with Tetraaza Coordinating Ligands

1Department of Chemistry, MGPG College, Gorakhpur 273001, India
2Department of Chemistry, North Eastern Regional Institute of Science and Technology (NERIST), Arunachal Pradesh, Nirjuli 791109, India
3Department of Chemistry, D.A-V. (P.G.) College, Kanpur 208001, India

Received 18 June 2012; Accepted 28 August 2012

Academic Editor: Alexander Kornienko

Copyright © 2013 Sanjay Singh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Oxovanadium(IV) complexes of the type [VO(mac)]SO4 (where mac = tetraaza macrocyclic ligands derived by condensation of thenil with 1,4-diaminobenzene or 3,4-diaminopyridine and their reaction with β-diketones) have been prepared using vanadyl ion as kinetic template. The prepared macrocyclic complexes were characterized by elemental analyses, molar conductance, magnetic moments, and infrared, electronic, and electron spin resonance data. From the spectroscopic studies, five-coordinate square-pyramidal geometry for the VO2+ complexes have been proposed wherein derived ligands act as tetradentate chelating agents.