Crystal structure of the coordination polymer catena-poly[[bis[hydroxy(phenyl)acetato-κ2 O 1,O 2]zinc(II)]-μ2-1,2-bis(pyridin-4-yl)ethane-κ2 N:N′]

Abstract

In the title polymeric ZnII compound, [Zn(C8H7O3)2(C12H12N2)] n , the Zn cation is coordinated by two N atoms from 1,2-bis(pyridin-4-yl)ethane unit and four O atoms from two mandelate [or hydroxy(phenyl)acetate] anions in a slightly distorted octahedral coordination geometry. The 1,2-bis(pyridin-4-yl)ethane unit bridges two ZnII cations, related by an inversion centre, to form a polymeric chain along [110]. The crystal structure features extensive O—H...O and weak C—H ...O hydrogen bonds, with C—H ... π interactions and π–π interactions also being present. The centroid–centroid distance between the phenyl ring of the mandelate group and the 1,2-bis(pyridine-4-yl)ethane moiety is 4.951 (2) Å. The 1,2-bis(pyridin-4-yl)ethane ligand is disordered over two positions, with a refined occupancy of 0.578 (14) for the major component.