Acta Cryst. (2009). E65, m203-m204  [ doi:10.1107/S1600536809001159 ]

Bis[(E)-1-(3,4-dichlorobenzylideneamino)-4-methylpyridinium] bis(maleonitriledithiolato)nickelate(II)

J.-L. Liu, B.-Q. Yao, Q. Liu and S.-M. Zhang

Abstract: The asymmetric unit of the title compound, (C₁₃H₁₁Cl₂N₂)₂[Ni(C₄N₂S₂)₂], contains one-half of a centrosymmetric [Ni(mnt)₂] anion (where mnt is maleonitriledithiolate or 1,2-dicyano-1,2-ethylenedithiolate) and an (E)-1-(3,4-dichlorobenzylideneamino)-4-methylpyridinium cation. In the anion, the coordination around the Ni atom is a distorted square. In the cation, the aromatic rings are oriented at a dihedral angle of 7.81 (3)°. In the crystal structure, intermolecular C-HN hydrogen bonds link the cations and anions. - Contacts between the nickel dithiolene and pyridine rings and between the benzene and pyridine rings, [centroid-centroid distances = 3.682 (3) and 3.643 (3) Å, respectively] may further stabilize the structure.

Online 17 January 2009

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