Synthesis, structure and properties of bis[N,N-bis(2-pyridylmethyl)amine-N-ethyl-2-pyridine-2-carboxamidecopper(II)] perchlorate

In this account we report the synthesis, structure and characterization of a dimeric Cu(II) complex, [Cu2(PaPy3H)2](ClO4)4 (bis[N,N-bis(2-pyridylmethyl)amine-N-ethyl-2-pyridine-2-carboxamidecopper(II)]). In this complex, the coordination of the designed ligand PaPy3H to the Cu(II) centers is completed by the bis(picolyl)methyl amine portion of one PaPy3H unit and the oxygen and pyridine nitrogen atoms of the pyridine-2-carboxamide moiety of a second PaPy3H ligand. The resulting dimeric complex demonstrates a new mode of coordination of the ligand PaPy3H.