(IUCr) Crystallography Journals Online

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Acta Cryst. (2011). E67, m603 [ doi:10.1107/S1600536811013596 ]

catena-Poly[[dinitratocopper(II)]--4,4''-bis(1H-benzimidazol-1-yl)-1,1':4',1''-terphenyl]

H.-S. Jiang, H. Li, J. Wang, H.-X. Ma and Z. Zhang

Abstract: In the title one-dimensional coordination polymer, [Cu(NO₃)₂(C₃₂H₂₂N₄)]_n, the Cu²⁺ ion (site symmetry 2) is coordinated by two nitrate O atoms and two N atoms from two 4,4'-bis(benzoimidazol-1-yl)terphenyl (L) ligands in a distorted cis-CuN₂O₂ square-planar coordination geometry. An alternative description of the metal coordination geometry, if long Cu-O contacts to the bonded nitrate anions are considered, is an extremely distorted cis-CuN₂O₄ octahedron. The complete L ligand is generated by crystallographic twofold symmetry and connects the metal ions into infinite chains propagating in [10 $\\overline{1}$ ]. The dihedral angle between the benzimidazole ring system and the adjacent benzene (B) ring is 51.12 (11)° and the dihedral angle between the B ring and the central ring is 19.45 (13)°.

Online 16 April 2011