Table of Contents
ISRN Inorganic Chemistry
Volume 2013, Article ID 426712, 7 pages
Research Article

Synthesis, Spectroscopy, and Magnetic Characterization of Copper(II) and Cobalt(II) Complexes with 2-Amino-5-bromopyridine as Ligand

1Chemistry Department, Faculty of Sciences, Arak University, Dr. Beheshti Avenue, Arak 38156-8-8349, Iran
2Dipartimento di Chimica Inorganica, Universita di Messina, Vill. S. Agata , Salita Sperone 31, 98166 Messina, Italy
3Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran

Received 6 November 2012; Accepted 9 December 2012

Academic Editors: K. Y. Choi, A. Karadag, A. Lehtonen, and X.-B. Wang

Copyright © 2013 Raziyeh Arab Ahmadi 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.


The synthesis, spectroscopic, and magnetic characterization of two new copper(II) and cobalt(II) complexes are described. Both two compounds have the general formula [M(L)2(Cl)2], in which 2-amino-5-bromopyridine. These complexes were prepared in one-step synthesis and characterized by elemental analysis, FTIR, UV-Vis, and EPR spectroscopy. Moreover, the single crystal structure of complex (1) was studied by the X-ray diffraction method. This compound consists of mononuclear units consisting of two ligands linked to metal via the nitrogen of pyridine ring. The UV-Vis spectra of copper(II) and cobalt(II) complexes show three and five absorption bands, respectively, attributed to the d-d transition of the metal ion, ligand → metal charge transfer, and or transitions of the ligand. The FTIR spectra show MN2Cl2 vibrations at 500–300 . The complexes show room temperature magnetic moments of 1.78 BM and 4.12 BM for Cu(II) and Co(II), respectively. The X-band electron spin resonance (ESR) spectra of Cu(II) complex in DMF or DMSO frozen at liquid nitrogen temperature show the typical transition.