Bis(3,5,7-triaza-1-azoniatricyclo[3.3.1.13,7]decane) bis(1,2-dicyanoethene-1,2-dithiolato)nickelate(II)

The asymmetric unit of the title complex, (C6H13N4)2[Ni(C4N2S2)2], comprises one 1-azonia-3,5,7-triazatricyclo[3.3.1.13,7]decane cation and one half of an [Ni(mnt)2]2− (mnt2− is maleonitriledithiolate or 1,2-dicyanoethene-1,2-dithiolate) dianion. The Ni2+ ion is located on a center of inversion and is coordinated by four S atoms from two mnt2− ligands in a square-planar coordination mode. Intermolecular N—H...N hydrogen-bond interactions link one anion and two cations in the crystal structure