Catena-Poly[[[Bis­(4-Ethyl­Benzoato-Κ2 O,O′)Lead(Ii)]-Μ-Nicotinamide-Κ2N1:O] Monohydrate]

Abstract

In the crystal structure of the polymeric title compound, {[Pb(C9H9O2)2(C6H6N2O)]·H2O}n, the six-coordinate PbII ion is chelated by two 4-ethyl­benzoate (PEB) anions and is bridged by two nicotinamide (NA) ligands, forming a polymeric chain running along the b axis. The carboxyl­ate groups of the PEB ions are twisted away from the attached benzene rings by 4.0 (6) and 13.3 (5)°. The two benzene rings of the PEB ions bonded to the same metal ion are oriented at a dihedral angle of 87.4 (3)°. In the polymeric chain, the NA ligand is linked to one of the carboxyl­ate groups via N—H⋯O hydrogen bonding. In the crystal, adjacent polymeric chains inter­act via N—H⋯O and weak C—H⋯O hydrogen bonds; and the lattice water mol­ecule links with the polymeric chains via N—H⋯O and O—H⋯O hydrogen bonding. π–π stacking between the benzene and the pyridine rings [centroid–centroid distance = 3.805 (5) Å] and weak C—H⋯π inter­actions are also observed in the crystal structure.