catena-Poly[[di­chlorido­mercury(II)]-μ-3,5-bis­[2-(pyridin-4-yl)ethyn­yl]pyridine-κ2N:N′]

In the title coordination polymer, [HgCl2(C19H11N3)]n, the HgII atom is coordinated by two N atoms of symmetry-related 3,5-bis­(pyridin-4-ylethyn­yl)pyridine ligands (L) and by two chloride ions in a distorted tetra­hedral geometry. The dihedral angles between the coordinated pyridine rings and the central pyridine ring are 44.6 (3) and 14.2 (3)°, respectively, while the dihedral angle between the two coordinating pyridine rings is 56.1 (3)°. The ligand bridges the HgII atoms, forming a zigzag chain running parallel to the b axis. There are no other significant inter­molecular inter­actions present in the crystal.