Macrocyclic divalent transition metal complexes of acetylacetone buckled with two different diamines

Metal-mediated condensation of o-phenylenediamine with bisacetylacetone-ethylenediimine yields 14-membered tetraaza macrocyclic six-coordinate complexes of the type M(mac)Cl₂],M(mac)SO₄·H₂O] (where M = Fe^II, Co^II and Cu^II; MAC = macrocyclic ligand formed in the template reaction). The metal ions are coordinated by four azomethine nitrogen atoms bridged by acetylacetone moieties. The electrical conductance magnetic moments, electronic and IR spectral data of all complexes are discussed.