Synthesis,Structures And Properties Of Coordination Compounds Based On Schiff Base

This thesis aims to design and synthesize metal coordination compounds with different nuclear numbers,and study their structure,magnetism and fluore scence.The complexes were analyzed by X-ray single crystal diffraction,infrar ed spectroscopy and XRD.Fluorescence properties and magnetism of some co mplexes were characterized.The main ligands are used in this paper:(1)H₂L1[(Z)-N'-((E)-2-hydroxy-3-methoxybenzylidene)picolinohydrazonamide],H₂L1a[(Z)-N'-((E)-2-hydroxybenzylidene)picolinohydrazonamide],(2)H₂L2[(E)-5-((l~1-oxidanyl)-l~5-methyl)-2-(((1-hydroxy-2-methylpropan-2-yl)imin-o)-methyl)phenol],H₂L2a[(E)-3-((2-hydroxy-4-methoxybenzylidene)amino)propane-1,2-diol],H₂L2b[(E)-2-(((2-((2-hydroxyethyl)amino)ethyl)imino)methyl)-5-methoxyphenol],(3)H₂L3[2-((E)-((2-(((E)-(2-hydroxy-4-methoxyphenyl)(phenyl)methylene)amino)et-hyl)imino)(phenyl)methyl)-4-methoxyphenol].The molecular formula of the com-plex is as follows:1:[Fe₂(L~1)₂(NCS)₂(DMF)₂]2:(MoO₂)₂(L1)₂(bbi)3:(MoO₂)₂(L1)₂(4,4'-pyridine)4:(MoO₂)(L1)(DMF)5:(MoO₂)(L1a)(CH₃OH)6:Fe₅(L2)₄(O)(NCS)(CH₃O)₄7:Fe₅Ln(L2)₄(CH₃O)₄(CH₃OH)₂(O)₂(NO₃)(Pic)(CH₃OH)_n(Ln=Nd,Eu)8:Mn₄(L2)₄(CH₃OH)₃(N₃)(O)(ClO₄)(CH₃OH)9:Ni₂(L2)₂(CH₃COO)₂(CH₃OH)₂10:Co₃(L2)₂(amp)₂(NCS)₂11:Zn₄(L2)₄12:Zn₄(L2a)₄13:Cu(HL2b)(1,10-phen)(ClO₄)(CH₃OH)14-15:M(L3)Cl(M=Fe?Mn)Complexes 4,5,13,14,15 are mononuclear complexes containing 3d and 4d metal centers,complexes 1,2,3,9 are binuclear complexes based on 3d and 4d metal ions,complex 10 is cobalt complex consisting of Cobalt ions 8,11 and 12 is tetranuclear complex constructed from 3d metal elements,Iron ions and ligands self.assemble into pentanuclera complexe 6 and complex 7 Fe₅Ln is built on 3d-4f metal ions.Complex 11 and 12 are tetranuclear complex consisting of Zinc ions.Zinc ions and oxygen bridges form croc.deficient cubanes in complex 11 and twisted cubanes in complex 12.l D chains are successfully constructed in complexes 1,3,4 and 11.Magnetic results show that complexes 1 and 10 are antiferromagnetic substances,besides complex 1 plays a key role in the formation of triazole functional groups.The fluorescence intensity of complex 12 has significantly higher than that of ligand...