Bis(μ-5-carboxybenzene-1,3-dicarboxylato)-κ3O1,O1′:O3;κ3O3:O1,O1′-bis[(2-phenyl-1,3,7,8-tetraazacyclopenta[l]phenanthrene-κ2N7,N8)lead(II)]

Abstract

In the title compound, [Pb2(C9H4O6)2(C19H12N4)2], the PbII atom is five-coordinated by two N atoms from a chelating 2-phenyl-1H-1,3,7,8-tetraazacyclopenta[l]phenanthrene (L) ligand and three O atoms from two Hbtc ligands (H3btc is benzene-1,3,5-tricarboxylic acid), resulting in a distorted PbN2O3 coordination. Two PbII atoms are bridged by the Hbtc ligands, forming a discrete centrosymmetric dinuclear complex. Intermolecular N—H...O and O—H...O hydrogen bonds and π–π interactions between the pyridine and imidazole rings, and between the pyridyl rings of the L ligands [centroid–centroid distances = 3.600 (6) and 3.732 (6) Å] lead to a three-dimensional supramolecular structure.