Synthesis and Structures of Co^III, Ni^II, and Mn^III Complexes with Schiff Bases Derived From 2-Acetylphenol and Diethylenetriamine

Abstract

Three cobalt(III), nickel(II), and manganese(III) complexes, [Co(L¹)(N₃)] (1), [Ni(L²)]·ClO₄ (2), and [MnL³(NCS)(OH₂)] (3), where L¹, L², and L³ are the deprotonated forms of 2,2′-[1,1′-(3-azapentane-1,5-diyldinitrilo)diethyl]diphenol (H₂L¹), 2-{1-[2-(2-aminoethylamino)ethylimino]ethyl}phenol (HL²), and N,N’-ethylene-bis(2-hydroxyacetophenoneimine) (HL³), respectively, have been prepared and structurally characterized by physicochemical methods and single-crystal X-ray diffraction. Even though the ligands in the complexes are different, they were prepared with the same starting material, viz. 2-acetylphenol and diethylenetriamine. The metal salts and pseudohalide ligands used in the preparation of the complexes can influence the types of the Schiff-base ligands.

Keywords:

• cobalt
• crystal structure
• nickel
• manganese
• nickel
• synthesis

Acknowledgments

This work was financially supported by the Natural Science Foundation of China (Project No. 20901036).