No abstract

No abstract

The key step in the preparation of the title compounds (VI) and (VII) is the oxidative coupling reaction of the pyridyl cuprate (V).

253ChemInform Abstract The preparation of the ligand (V) follows a known procedure. (V) reacts with cupric acetate (VI) to give the novel Cu(II) complex (VII) (space group C2/c, Z=4), which can be reduced to its Cu(I) analogue upon addition of ascorbic acid (71% yield). The properties of the complexes are interpreted on the basis of existing theories and compared to the properties of other Cu(II) heterocycles containing the ligands bipyridine and bis(2-pyridyl)amine.