Abstract
In the title compound, C21H15N7O6·2C3H7NO·3H2O, the N 2,N 2′-bis(3-nitrobenzylidene)pyridine-2,6-dicarbohydrazide and one water molecule are located on a twofold rotation axis. The molecules are connected by hydrogen bonds. One dimethylformamide molecule is disordered over two positions; the site occupancy factors are ca 0.8 and 0.2.
Highlights
C21H15N7O6Á2C3H7NOÁ3H2O, the N2,N20-bis(3-nitrobenzylidene)pyridine-2,6-dicarbohydrazide and one water molecule are located on a twofold rotation axis
The molecules are connected by hydrogen bonds
One dimethylformamide molecule is disordered over two positions; the site occupancy factors are ca 0.8 and 0.2
Summary
Key indicators: single-crystal X-ray study; T = 273 K; mean (C–C) = 0.003 A; disorder in solvent or counterion; R factor = 0.049; wR factor = 0.169; data-toparameter ratio = 11.7. C21H15N7O6Á2C3H7NOÁ3H2O, the N2,N20-bis(3-nitrobenzylidene)pyridine-2,6-dicarbohydrazide and one water molecule are located on a twofold rotation axis. The molecules are connected by hydrogen bonds. One dimethylformamide molecule is disordered over two positions; the site occupancy factors are ca 0.8 and 0.2. Related literature Tridentate ligands with 2,6-dipicolinoyhydrazone have been intensively studied due to their interesting coordination modes (Paolucci et al, 1985; Chen et al, 1996, 1997)
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