Acta Cryst. (2004). E60, m568-m570  [ doi:10.1107/S1600536804008207 ]

Bis(2-formylpyridine semicabazonato)nickel(II)

J. Zhou, Z.-F. Chen, X.-W. Wang, Y.-S. Tan, H. Liang and Y. Zhang

Abstract: The Ni atom in the title complex, [Ni(C₇H₇N₄O)₂], is octahedrally coordinated by two mono-deprotonated Schiff bases that are derived from the condensation of pyridine-2-carbaldehyde and semicarbazide; the Schiff bases act as meridional tridentate ligands, each of them coordinating the metal with the deprotonated amidate oxygen [Ni-O = 2.0909  (15) and 2.0959  (15)  Å], imine nitrogen [Ni-N = 1.9892  (18) and 1.9822  (18)  Å] and pyridine nitrogen [Ni-N = 2.100  (2) and 2.1317  (2)  Å]. The dihedral angle formed by the mean planes of the bicyclic chelate systems of each of the ligands is equal to 87.69  (4)°. The crystal packing is stabilized by intermolecular hydrogen bonds involving N-HO and C-HO interactions.

Online 17 April 2004

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