Syntheses And Properties Of Oxamido-bridged New Polynuclear Complexes And Coordination Polymers

Chemists are more interested in these complexes for their potential applicationsin many aspects of nonlinear optical materials, porous materials, magnetic materials,drug storage and transport, superconducting materials and catalysis, and so on. Thepyridine and amide groups assembled in the same ligands can increase thefunctionality of the organic ligands, and a variety of novel structures with specialfeatures are constructed by using these ligands. By using these ligands, a variety ofnovel structures were constructed and their properties in electrochemical, optical,catalytic, magnetic and biological simulation have been studied. Accordingly, themain contents of this thesis are as follows:（1） N,N′-bis（2-pyridylmethyl）oxamide （H₂L₁） ligand is synthesized. And a newdinuclear copper（II） complex [Cu₂L₁（DMF）₄]₂ClO₄（₁） is synthesized andcharacterized using X-ray diffraction single crystal structure determination, IR andvariable temperature magnetic.（2） Reaction of H₂L₁, NaN（CN）₂with Zn（NO₃）₂6H₂O or NiCl₂6H₂O yields twonovel polymers [Zn₂（CNNCN）₂L₁]n（₂） and [Ni₂（CNNCN）₂（CH₃CH₂OH）₂L₁]n（₃）which contain both double-stranded chain and characterized using X-ray diffractionsingle crystal structure determination, IR spectra.（3） N,N′-bis（₄-pyridylmethyl） oxamide （H₂L2） ligands is synthesized. And Fourtwo-dimensional polymers {[Cd（CNNCN）₂L2]·₂CH₃CH₂OH}n（₃）,{[Mn（CNNCN）₂L₂]·2CH₃CH₂OH}n（₄）,{[Co（CNNCN）₂L₂]·₂CH₃CH₂OH}n（5）,{[Ni（CNNCN）₂L₂]·2CH₃CH₂OH}n（6） are synthesis by H₂L2, NaN（CN）₂withCd（NO₃）₂·₄H₂O, Mn（OAc）₂·₄H₂O, Co（OAc）₂·₄H₂O, Ni（NO₃）₂·6H₂O andcharacterized using X-ray diffraction single crystal structure determination, IR.Cadmium（II） complex has characterized by thermogravimetric analysis. Cobalt（II）,manganese（II）, nickel（II） complexes have characterized by variable-temperaturemagnetic analysis.（4） A novel three-dimensional zinc（II） coordination complex{Zn₂（CNNCN）₂（L₂）₃（NO₃）₂]2CH₃CH₂OH}n（8） is synthesized characterized by IRspectra.