catena-Poly[[[bis(methanol-κO)lead(II)]-μ-N′-[1-(pyridin-2-yl-κN)ethylidene]isonicotinohydrazidato-κ3N′,O:N1] perchlorate]

Abstract

The PbII atom in the polymeric title compound, {[Pb(C13H11N4O)(CH3OH)2]ClO4}n, is coordinated by an N′-[1-(pyridin-2-yl-κN)ethylidene]isonicotinohydrazidate ligand via O,N,N′-donors and simultaneously bridged by a neighbouring ligand via the isonicotinoyl N atom; two additional sites are occupied by methanol O atoms. The resultant supramolecular chain is a zigzag along the c axis. The PbII atom is seven-coordinated within an N3O3 donor set and a lone pair of electrons, which defines a Ψ-pentagonal–bipyramidal coordination geometry with the pyridine N and lone pair in axial positions. The supramolecular chains are linked into the two-dimensional array via intermolecular Pb...N [3.020 (4) Å] interactions. Layers stack along the a axis, being connected by O—H...O hydrogen bonds formed between the coordinated methanol molecules and perchlorate anions.