catena-Poly[[[triaquasulfatozinc(II)]-μ-3,3′-bis(3-pyridyl)-1,1′-(m-phenylene)diurea] methanol solvate monohydrate]

Abstract

In the title coordination polymer, {[Zn(SO4)(C18H16N6O2)(H2O)3]·CH3OH·H2O}n, the Zn2+ ion adopts a slightly distorted cis-ZnN2O4 octahedral geometry arising from three coordinated water molecules, one sulfate ion and two bridging 3,3′-bis(3-pyridyl)-1,1′-(m-phenylene)diurea (bpmpbu) ligands. The dihedral angles between the central benzene ring and two terminal pyridine rings of the bpmbpu molecule are 10.58 (17) and 34.63 (16)°. In the crystal, the ligands bridge the ZnII ions, thus generating a one-dimensional zigzag coordination polymer propagating in [010]. The crystal structure features extensive N—H...O and O—H...O hydrogen-bonding interactions.