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The title complex, [Ni(C6H8N2)4]Cl2, consists of a centrosymmetric octahedral six-coordinate nickel(II) coordination complex cation and two chloride ions. The Ni atom sits on a crystallographic inversion center. Two of the 1,2-di­amino­benzene ligands are chelating and the other two are monodentate. The chelating ligands define an equatorial plane and the monodentate ligands are axially trans. In addition to one hydrogen bond between the non-coordinated N atom of the monodentate ligand and an adjacent metal complex, there is extensive hydrogen bonding to the chloride ions.
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