Spontaneously Resolved Homochiral 3D Lanthanide−Silver Heterometallic Coordination Framework with Extended Helical Ln−O−Ag Subunits

Two novel homochiral lanthanide−silver heterometallic coordination polymers LnAg(OAc)(IN)3 [Ln = Nd (1), Eu
(2), HIN = isonicotinic acid, HOAc = acetic acid] have been prepared under hydrothermal conditions, which were
characterized by elemental analysis, infrared, thermogravimetric analysis, and single-crystal X-ray diffraction. Both
complexes are isostructural and crystallize in a hexagonal system, chiral space group P6122. Both polymers are
constructed from infinite right-handed homochiral helical chains with Ln−O−Ag connectivity, representing the first
examples of homochiral lanthanide−transition metal heterometallic coordination polymers with a 3D coordination
framework based on spontaneous resolution. Furthermore, the luminescent properties of 2 were studied.