Acta Cryst. (2009). E65, m1656  [ doi:10.1107/S1600536809048843 ]

4,4'-(Propane-1,3-diyl)dipyridinium tetrachloridonickelate(II)

Z.-X. Du and J.-P. Qu

Abstract: The title compound, (C₁₃H₁₆N₂)[NiCl₄] or (H₂bpp)·NiCl₄ [bpp is 1,3-bis(4-pyridyl)propane], is isostructural with its already reported Cu, Zn and Hg analogues. The structure consists of a doubly charged (H₂bpp)²⁺ cation and a tetrahedral [NiCl₄]^2- dianion. Both pyridyl N atoms are protonated and form a (H₂bpp)²⁺ cation which adopts an anti-anti conformation with a dihedral angle of 6.287 (7)° between the pyridyl rings. The two pyridyl N atoms are both involved in strong N-HCl hydrogen bonds, which link both units into a dimer.

Online 21 November 2009

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