Double Helical Dinuclear Copper(<scp>I</scp>) Complexes of Macrocyclic Bis(dithiadiimine) Ligands

Abstract

32- and 34-membered macrocyclic Schiff base type ligands with (N2S2)2 donor units are synthesized in a high-yielding [2 + 2] condensation reaction. Coordination of these ligands to copper(I) results in double helical dicopper(I) complexes with a new figure-of-eight loop structure (see diagram on the right).