catena-Poly[[bis(nitrato-κ2O,O′)zinc(II)]-μ-4,4′-bis(pyrazol-1-ylmethyl)biphenyl-κ2N2:N2′]

In the title compound, [Zn(NO3)2(C20H18N4)]n, the ZnII atom lies on a crystallographic twofold axis and the coordination geometry can be considered as a slightly distorted tetrahedron defined by two O atoms from two nitrate groups and two N atoms from two ligand molecules. A distorted octahedron may be assumed when two of the symmetry-related nitrate O atoms, with Zn—O distances of 2.528 (2) Å, are added to the coordination environment. Another twofold axis, passing through the middle of the biphenyl bonds, is observed in the crystal structure. A chain along [101] is built up by the ligands linking the ZnII ions.