Divergent layer topologies in divalent metal aliphatic dicarboxylate coordination polymers containing 3-pyridylmethylnicotinamide

Coordination polymers containing an aliphatic dicarboxylate and 3-pyridylmethylnicotinamide (3-pmna) ligands exhibit different layer topologies depending on the metal coordination environment and dicarboxylate length and binding mode. {[Cd2(succinate)2(3-pmna)(H2O)2]·3H2O}n (pictured) shows dimer-based [Cd(suc)]n layers pillared by 3-pmna ligands into a 5-connected sandwich motif.