catena-Poly(μ-3-hy­droxy­benzoato-κ3O1O1′:O3)(μ-3-hy­droxy­benzoato-κ3O1O1′:O1)(isonicotinamide-κN1)­lead(II) monohydrate

摘要

In the crystal of the title polymeric compound, {[Pb(C7H5O3)2(C6H6N2O)]·H2O}n, the Pb^II ion is chelated by two carboxyl­ate groups of 3-hy­droxy­benzoate (HB) anions, and coordinated by one isonicotinamide mol­ecule; a carboxyl­ate O atom and a hy­droxy O atom from adjacent HB anions bridge the Pb^II ion to form polymeric chains along [100], in which the Pb^II ion is in an irregular seven-coordination geometry. The carboxyl­ate groups of the HB ions are slightly twisted away from the attached benzene rings by 2.84 (15) and 4.8 (2)°. The planes of the two benzene rings of the HB ions are oriented with respect to each other at a dihedral angle of 84.41 (8)°. In the crystal, adjacent polymeric chains inter­act via O—H⋯O, N—H⋯O and weak C—H⋯O hydrogen bonds. The solvent water mol­ecule links with the polymeric chains via O—H⋯O hydrogen bonding. π–π stacking between the benzene and pyridine rings and between the benzene rings [centroid–centroid distances = 3.731 (2) and 3.353 (2) Å] are present in the crystal.