Locking the Absolute Configuration of Achiral Amine Ligand: A Strategy for Helicity Introduction in Coordination Polymers

A novel coordination polymer {[Mn(m-cpdba)(H2O)4]·H2O}n 1 has been synthesized and characterized. Single-crystal X-ray diffraction analysis reveals that compound 1 contains one-dimensional single-stranded helical chains, in which the chirality of a stereo- chemically labile amine of the ligands can be locked by the Mn(II) ion via coordination bonds and transferred to the whole coordination polymeric chain, exhibiting an identical absolute con- figuration. Crystal data for 1: C14H17Mn1N3O13, Mr = 490.25, space group C2/c, a = 18.5177(18), b = 6.6194(5), c = 31.563(4) , β = 105.046(5)°, Z = 8, V = 3736.2(7) 3, Dc = 1.743 g/cm3, F(000) = 2008 and μ = 0.786 mm-1.