Formation of a dicopper(I) helicate by oxidative dehydrogenation of a monomeric copper(II) polyamine complex

Reaction of the monomeric polyamine complex [CuII(1)]2+ with OH- and O2 gives the dimeric double-helix complex [Cu2I(2)2]2+, in which the -CH2-NH- amine groups have been dehydrogenated to -CHN- functions.