Syntheses, Crystal Structures and Antimicrobial Property of Schiff Base Copper(II) Complexes

Abstract

Four new copper(II) complexes, [CuL¹(μ_1,1-N₃)]_n (1), [CuL¹(μ_1,3-NCS)]_n (2), [Cu(HL²)₂](SCN)₂ (3) and [Cu(L²)₂] (4), where L¹ and L² are 2-((2-(dimethylamino)ethylimino)methyl-4,6-difluorophenolate and 2,4-difluoro-6-((3-morpholinopropylimino)methyl)phenolate, respectively, and HL² is 2-((2-(dimethylammonio)ethylimino)methyl-4,6-difluorophenolate, were synthesized and characterized by elemental analysis, IR and UV-vis spectroscopy. The structures for the complexes were further confirmed by single crystal X-ray structure determination. Complexes 1 and 2 are polymeric copper(II) complexes, with the Cu atoms in square pyramidal coordination. Complexes 3 and 4 are mononuclear copper(II) complexes, with the Cu atoms in square planar coordination. The complexes were assayed for their antimicrobial properties.