Research Article: catena-Poly[[(benzil bis{[(pyridin-2-yl)methylidene]hydrazone}-κ4N,N′,N′′,N′′′)mercury(II)]-μ-chlorido-[dichloridomercury(II)]-μ-chlorido]

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 [010]: 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.

Partial Text

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 ▶).




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