μ-Adipato-κ2O1:O4-bis{[2,6-bis(1H-benzimidazol-2-yl-κN3)pyridine-κN](nitrato-κO)lead(II)}

Abstract

The dinuclear title compound, [Pb2(C6H8O4)(NO3)2(C19H13N5)2], lies with the mid-point of the butyl chain of the bridging adipate unit on a center of inversion. The PbII ion is covalently bonded to the nitrate anion and is bonded to a carboxyl­ate group of the adipate unit by another covalent bond. The N-heterocycle functions in a chelating tridentate mode. The metal atom exists in a Ψ-octa­hedral coordination environment. When weaker Pb⋯O inter­actions are also considered, the geometry is a Ψ-tricapped trigonal prism in which the lone-pair electrons occupy one face of the trigonal prism. Adjacent mol­ecules are linked into a layer structure by N—H⋯O hydrogen bonds.