Chiral molecular ferromagnets based on Copper(II) polymers with end-on azido bridges

Two homochiral two-dimensional brick-wall complexes with only end-on azido bridges, [Cu-3((R)-phea)(2)(N-3)(6)](n) (1) and [Cu-3((S)-phea)(2)-(N-3)(6)](n) (2) (phea = 1-phenylethylamine), have been synthesized and structurally characterized. Magnetic studies show that both complexes are chiral ferromagnets with the magnetic transition temperature at 5.5 K.