Summary
A novel tridentate macrocyclic ligand was synthesised by the reaction of 2,6-dipicolinic acid hydrazide and 2,3-butanedione. Complexes with CoII, NiII and CuII are five-coordinate trigonal bipyramidal on the basis of analyses, electrical conductance, magnetic, electronic and infrared spectral studies. I.r. studies reveal that the ligand coordinates through the pyridine nitrogen and the amido-nitrogen.
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Rana, V.B., Ratra, S.P., Singh, D.P. et al. Synthesis and characterisation of CoII, NiII and CuII complexes of a tridentate N5 macrocyclic ligand. Transition Met Chem 10, 115–116 (1985). https://doi.org/10.1007/BF00618463
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DOI: https://doi.org/10.1007/BF00618463