Synthesis and spectroscopic studies of cobalt(II), nickel(II) and copper(II) complexes with N-donor (N4) macrocyclic ligand (DSLF)

Department of Chemistry. Zakir Husain College (University of Delhi), JLN Marg, New Delhi-110 002, India E-mail : schandra _ 00@yahoo .com Fax : 91-11-23215906 Manuscript received 21 January 2008. revised 13 May 2008, accepted 16 May 2008 Complexes of CoII , NiII and Cull containing a tetradentate macrocyclic nitrogen ligand have been prepared via template reaction of 2,3-pentanedione, m-phenylenediamine and transition metal ions. The complexes have been characterized on the basis of elemental analysis, molar conductance measurements, magnetic susceptibility measurements, infrared, EPR and UV-Visible electronic absorption spectral studies