Crystal structure of bis[1-(4-bromobenzyl)pyridinium] bis(1,2-dicyanoethene-1,2-dithiolato-κ2S,S′)nickelate(II)

The asymmetric unit of the title salt, (C12H11BrN)2[Ni(C4N2S2)2], consists of one 1-(4-bromobenzyl)pyridinium cation and one half of a complex [Ni(mnt)2]2− (mnt2− is the maleonitriledithiolate dianion). The Ni2+ ion is located on an inversion centre and is coordinated by four S atoms from two mnt2− ligands, exhibiting a square-planar coordination environment. In the cation, the planes of the pyridinium and benzene rings make a dihedral angle of 69.86 (19)°. The cations and anions are alternately arranged in layers parallel to (001) and are held together by non-classical C—H...N hydrogen bonds.

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