Sulfur Flexible Polycarboxylic Acid Metal Complexes Synthesis And Characterization

Inorgganic-orgganic micropore and non-linear optical material can be prepared with multl-carboxyl aromatic acid which possesses good rigidity and thermorstability and metal as structural unit.This kind of material has many latent and functions,showing the fascinatins applied-prospect.At the same time the sulphur ether acids compound possesses the carboxyl and sulphur atom which can coordinate with metal.Inthis papor,we synthesize and symbolize three sulphide bicarboxylate ligands such as 2.5-bis (carboxymethyl mercapto)-1.3,4-thiadiazole(L i );2,2 -(o-phenylenedimethylenethio) diacetic acid(L11); 2,2 ' -(m-phenylenedimethylenethio) diacetic acid(Lm).These ligans which coordinate transition metal in suitable solvent and washins by water.can be synthesized 11 ligand compounds.Their copositions are asserted by elementary organic analysis,ICP emission spectrum and differential thermal gravimetric analysis.The chemical formulars Respectively are: Cu(L1 )-1, Cd(L1 )H2O-2, Co(L1)4H2O-3, Cu(L11)-4, Ni(L11)2H2O-5, Zn(L11)-6, Cd(Ln)H2O-7, Co(L11)H2O-8, Cu(L111)-9 Ni(L111)-10 and Cd(L111)H2O-11l.The complexes are analized by H-NMR and IR infrared specthem and the bands are attributed.As a resurt the possible structures of these compounds are inferred.At the same time their fluorescence property is studied ,Cd and Co complexes possess fluorescence property.The experiments show that this five kinds of complexes can be used luminous material and probe determined by metal iron.