Research Article: Bis{2-amino-2-oxo-N-[(1E)-1-(pyridin-2-yl-κN)ethyl­idene]acetohydrazidato-κ2N′,O1}nickel(II)

Date Published: May 01, 2012

Publisher: International Union of Crystallography

Author(s): Cheikh Hamidou Kane, Ibrahima Elhadj Thiam, Farba Bouyagui Tamboura, Mohamed Gaye, Pascal Retailleau.


In the title compound, [Ni(C9H9N4O2)2], the NiII 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 Å3.

Partial Text

For the structures of related nickel complexes, see: Dieng et al. (2004 ▶); Tamboura et al. (2009 ▶); Mikuriya et al. (1996 ▶).