Ferroelectric copper quinine complexes

Ferroelectric Copper Quinine Complexes The reactions of quinine with Cu(I)Cl and Cu(I)Br afford Cu5Cl9(H(2)Quinine)(2) (1) and Cu3Br7(H(2)Quinine)(2)(H2O) (2), respectively, with 1D polymeric structures. The anionic chain in 1 contains Cu4Cl62- adamantane-type aggregates that are linked to two identical units by CuCl32- bridges, and the Cu(I) centers in 2 have a distorted tetrahedral environment formed by bridging and terminal bromide ions. 1 is the first homochiral metal-organic coordination polymer exhibiting ferroelectric behavior.