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C 25H21Cl2N5ORu, monoclinic, P121/c1 (no. 14), a = 12.170(2) Å, b = 11.706(2) Å, c = 20.069 (4) Source of material For the novel ligand a-acetyl-a-phenylazo-4-phenylazomethine (L), a solution of 1-chloro-1-(phenylhydrazono)-2-propanone  (10.0 g), aniline (7.4 g), and triethylamine (7.2 g) in ethanol (20 mL) was refluxed for 2 h. The solvent was partially removed under reduced pressure. The yellow solid precipitated upon cooling of the solution was washed with water and crystallized fromdoi:10.1524/ncrs.2007.0025 fatcat:xbn2hrux4ncczeylqcjhkhlqhi