A new tetradentate N 2 O 2 -type Schiff base, bis(2-hydroxypropiophenone)-1,2-propanediimine (L), was synthesized by the reaction of 1,2-propanediamine with 2-hydroxypropiophenone in EtOH. The Schiff base is able to extract Co II , Ni II , Cu II and Zn II ions in aqueous NaNO 3 media into a CH 2 Cl 2 organic phase via a cation exchange mechanism. The observed extraction order was as follows: Cu II > Ni II > Co II > Zn II . Reaction of nickel acetate with the Schiff base in EtOH afforded the neutral complex Ni AE L. Single crystals of this complex were obtained from mixed CHCl 3 -EtOH (3:1) solvent and its structure was determined by X-ray diffraction. Crystal data for Ni AE L AE CHCl 3 : triclinic, space group P" , with a = 9.005(2) Å , b = 9.625(2) Å , c = 14.212(4) Å , V = 1136.8(5) Å 3 , a = 106.06(2)°, b = 106.06(2), c = 105.10(2)°, and Z = 2. A near square planar structure is observed for the studied complex.
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