2.3.2. Synthesis of Schiff Base
Hot solution (60˚C) of ethylenediamine (0.399 g, 6.67
mmol) in 50 mL ethanol/DMF mixture as 1:1 mole ratio
mixed with hot solution (60˚C) of bisaldehyde (1.6 g,
6.67 mmol) in the same solvent and the reaction mixture
was left under heating for 30 min. A solid mass separated
was collected and washed withdiethylether. Crystalliza-
tion was done with ethanol and then dried over CaCl2.
The pale yellow ligand; L, (yield, 82%) was collected.