Synthesis and Characterisation of Macrocyclic Complexes of Nickel(II),Cobalt(II) and Copper(II) containing a Tetradentate-N6 Macrocyclic Ligand

Department of Chemistry, University of Roorkee Roorkee-247 667 Department of Chemistry, Gurukula Kangri University Hardwar-249 404 Manuscript received 30 November 1994 received April 1995, accepted 6 July 1995 A16-membered tetradentate N6-macrocy elie ligand and its NiII CuII and CuIIcomplexes have been prepared by template method. These complexes are found to have a distorted octahedral configuration. No evidence is found for the participation of nitrogen atoms of pyridine in coordination, a fact supported by far-ir spectra. Thus the ligand coordinates through all the four azomethine nitrogen atoms