A two-dimensional Zn coordination polymer with a three-dimensional supra­molecular architecture

The title compound, poly[bis-{μ2-4,4'-bis-[(1,2,4-triazol-1-yl)meth-yl]biphenyl-κ2N4:N4'}bis-(nitrato-κO)zinc(II)], [Zn(NO3)2(C18H16N6)2] n , is a two-dimensional zinc coordination polymer constructed from 4,4'-bis-[(1H-1,2,4-triazol-1-yl)meth-yl]-1,1'-biphenyl units. It was synthesized and characterized by elemental analysis and single-crystal X-ray diffraction. The ZnII cation is located on an inversion centre and is coordinated by two O atoms from two symmetry-related nitrate groups and four N atoms from four symmetry-related 4,4'-bis-[(1H-1,2,4-triazol-1-yl)meth-yl]-1,1'-biphenyl ligands, forming a distorted octa-hedral {ZnN4O2} coordination geometry. The linear 4,4'-bis-[(1H-1,2,4-triazol-1-yl)meth-yl]-1,1'-biphenyl ligand links two ZnII cations, generating two-dimensional layers parallel to the crystallographic (132) plane. The parallel layers are connected by C-H⋯O, C-H⋯N, C-H⋯π and π-π stacking inter-actions, resulting in a three-dimensional supra-molecular architecture.