Chiral-Layered Metal Phosphonate Formed via Spontaneous Resolution Showing Dehydration-Induced Antiferromagnetic to Ferromagnetic Transformation

Metal phosphonates MII{(2-C5H4N)CH2NHCH2PO3} (H2O) [M = Mn (1), Cd (2)] with chiral-layered structures are obtained by spontaneous resolution using achiral starting materials. The magnetic behavior of 1 is transformed from antiferromagnetic to ferromagnetic upon dehydration.