The First Highly Stable Homochiral Olefin−Copper(I) 2D Coordination Polymer Grid Based on Quinine as a Building Block

Solvothermal reactions of quinine with Cu I Cl or Cu I Br yield the two highly stable homochiral copper(I)−olefin coordination polymers Cu 8 Cl 10 (H-quinine) 2 ( 1 ) and Cu 8 Br 10 (H-quinine) 2 ( 2 ), respectively, in which both 1 and 2 are 2D layered networks and are isostructural. The electric hysteresis loop of 1 clearly shows it displays a typical ferroelectric behavior with a remanent polarization (Pr) of ca. 0.12 μC cm - 2 .