Synthesis and X-Ray Crystal Structures of Trinuclear Nickel(II) Complexes Derived from Schiff Bases and Acetate Ligands with Biological Activity

Jin-Long Hou, Hong-Yuan Wu, Cheng-Bin Sun, Ye Bi, Wei Chen
2020 Acta Chimica Slovenica  
The reactions of Ni(OAc) 2 2H 2 O with Schiff base ligands 5-bromo-2-((cyclopentylimino)methyl)phenol (HL 1 ) and 5-bromo-2-(((2-(isopropylamino)ethyl)imino)methyl)phenol (HL 2 ) in methanol afforded two discrete trinuclear complexes [Ni 3 (L 1 ) 2 (μ 2 -η 1 :η 1 -OAc) 2 (DMF) 2 (BrSal) 2 ] (1) and [Ni 3 (L 2 ) 2 (μ 2 -η 1 :η 1 -OAc) 2 (μ 2 -η 2 :η 1 -OAc) 2 ] (2), where BrSal is the monoanionic form of 4-bromosalicylaldehyde. The complexes were characterized by elemental analysis, IR and
more » ... lysis, IR and UV-Vis spectroscopy. The crystal structures of the complexes have been determined by X-ray crystallography. In both complexes, the nickel atoms are in octahedral coordination geometries. The L 1 ligand coordinates to the nickel atoms through the phenolate O and imino N atoms, and the L 2 ligand coordinates to the nickel atoms through the phenolate O, imino N and amino N atoms. The antimicrobial activities of the complexes were assayed.
doi:10.17344/acsi.2020.5824 fatcat:gnrxmasoujgwjpmt52fpbmzvyu