Date Published: July 01, 2012
Publisher: International Union of Crystallography
Author(s): Mehmet Akkurt, Ali Akbar Khandar, Muhammad Nawaz Tahir, Seyed Abolfazl Hosseini-Yazdi, Ghodrat Mahmoudi.
In the title coordination polymer, [Hg2Cl4(C26H20N6)]n, one HgII ion is coordinated by four N atoms from the benzylbis((pyridin-2-yl)methylidenehydrazone) ligand and two Cl− ions in a very distorted cis-HgCl2N4 octahedral geometry. The other HgII ion is coordinated in a distorted tetrahedral geometry by four Cl− ions. Bridging chloride ions link the HgII ions into a chain propagating in : the Hg—Cl bridging bonds are significantly longer than the terminal bonds. The dihedral angle between the central benzene rings of the ligand is 83.3 (2)°. The packing is consolidated by weak C—H⋯Cl hydrogen bonds and C—H⋯π interactions.
For background to polyimine ligands, see: Bai et al. (2005 ▶); Chowdhury et al. (2003 ▶); Drew et al. (2006 ▶); Pal et al. (2000 ▶); Sun et al. (2006 ▶).