Bis{2-amino-2-oxo-N-[(1E)-1-(pyridin-2-yl-κN)ethyl­idene]acetohydrazidato-κ(2) N′,O (1)}nickel(II)

In the title compound, [Ni(C(9)H(9)N(4)O(2))(2)], the Ni(II) ion is situated on a twofold rotation axis and is coordinated by two O and four N atoms from two tridentate {2-amino-2-oxo-N-[(1E)-1-(pyridin-2-yl-κN)ethyl­idene]acetohydrazidate ligands in a distorted octa­hedral geometry. In the crystal, N—H⋯O and N—H⋯N hydrogen bonds link the mol­ecules into columns in [001]. The porous crystal packing is further stabilized via π–π inter­actions between the pyridine rings of neighbouring mol­ecules [centroid–centroid distance = 3.746 (3) Å] with voids of 270 Å(3).