Bis{μ-N-[(E)-4-benzyloxy-2-oxidobenzylidene]-4-nitrobenzenecarbohydrazidato}bis[diaquanickel(II)] dimethylformamide tetrasolvate

Abstract

The molecule of the title complex, [Ni2(C21H15N3O5)2(H2O)4]·4C3H7NO, is located on an inversion centre. This results in a dimeric NiII complex, with the two NiII atoms bridged by phenolate O atoms. The tridentate ligand is chelated to each NiII atom via one N and two O atoms of the iminolate form of the hydrazide moiety, which has the same conformation as the free ligand. The coordination geometry around each NiII ion is slightly distorted octahedral. A supramolecular three-dimensional architecture is created by dominant intermolecular O—H...N, O—H...O and C—H...O hydrogen-bonding interactions. These are augmented by two C—H...π interactions and a π–π interaction with a centroid–centroid distance of 3.681 (2) Å.