Synthesis, Structures And Characterization Of Transition Metal Complexes Based On Novel Schiff Bases

Schiff base is a kind of very important ligand,it can coordinate with most of metal ion toform metal-shiff base complexes Schiff base and its metal complexes have attracted ourattention，as these complexes are widely used in the fields of biochemistry, medicine, catalysis,analysis, anti-corrosion， functional materials etc. It is well-known that complexes inO-bridged systems the M-O-M angle plays a vital role in determining the nature of magneticexchange between the metal ions. In this paper,we have designed and synthesized sixtransition metal complexes that contain O-bridged systems as follow:1. Two ligands （H₃L1and H₃L2） have been prepared by the reactions of2-tert-Butyl-4-ethyl-phenol, formaldehyde and2-amino propanol or3-amino-1-propanol. Thereaction of FeCl₃6H₂O and H₃L1or H₃L2gives two dinuclear Fe（Ⅲ） complex [Fe₂L1₂]1and [Fe₂L2₂]2, respectively，which have been characterized by elemental analysis,1H NMRspectrum,X-ray crystallography, UV–Vis spectroscopic techniques,magnetic measurementsetc.2. Two dinuclear iron（Ⅲ） complexes（3and4） have been synthesized by the reactions of3-t-butyl-4-hydroxy anisole, formaldehyde and2-amino propanol or3-amino-1-propanol withFeCl₃6H₂O, and characterized by elemental analysis,X-ray crystallography, UV–Vis spectr-oscopic techniques magnetic measurements etc.3. Two dinuclear Cu（Ⅱ） complexes（5and6） have been synthesized by the reactions of3-amino-1-propanol，formaldehyde and2-tert-Butyl-4-ethylphenol，or3-t-butyl-4-hydroxyani-sole with CuCl₂2H₂O, and characterized by elemental analysis, X-ray crystallography, UV–Vis spectroscopic techniques.