A New Type of Tetradentate Square-Planar N2O2 Ligands. Copper(II) Complexes of 6,6'-Bis(acylamino)-2,2'-bipyridines

Article abstract of DOI:10.1246/bcsj.60.3149

A new type of N2O2 tetradentate ligands 6,6'-bis(acylamino)-2,2'-bipyridines, was synthesized and their complex formations with copper(II) were investigated.They form two types of 1:1 complexes; one is the non-deprotonated type having external counter anions and the other is the deprotonated type having no external counter anions.They serve as square planar N2O2 tetradentate ligands in either case and the structures of the complexes are very similar to salen complexes.The structures and properties of these complexes were investigated and discussed.