| In this thesis,two different ligands were synthesized from 2-?chloromethyl?pyridine hydrochloride and 4-?chloromethyl?pyridine hydrochloride,and four series of totally 19lanthanide phosphonate complexes were synthesized under hydrothermal method and were characterized by elemental analysis,FT-IR,powder and single-crystal X ray diffraction analysis,thermogravimetric analysis,solid-state emission spectra analysis,magnetic properties analysis and in vitro bioactivity analysis.The details are as follows:1)Ligand?1?:2-?pyridyl-N-Oxide?methylphosphonic acid was synthesized successfully.And three series of totally 16 lanthanide phosphonate complexes were synthesized under hydrothermal method,namely,[Ln?HPAI?(?C2O4?0.5)2?H2O?]·3H2O{Ln=Eu?1?,Gd?2?,Tb?3?,Dy?4?,Ho?5?};[Ln2?PALI??C2O4?2?H2O?3]·H2O{Ln=Er?6?,Tm?7?,Yb?8?,Lu?9?}and[NaLn2?PAI??C2O4?2.5?H2O?4]·2H2O{Ln=Sm?10?,Eu?11?,Gd?12?,Tb?13?,Ho?14?,Er?15?,Tm?16?}{H2PAI=2-?pyridyl-N-Oxide?methylphosphonic acid}.The crystal structures of complexes1-16 were confirmed by X-ray diffraction analysis.And the physicochemical properties were tested at the same time.Complexes1-5,6-9 and 10-16 were isomorphic,respectively.2)Ligand?2?:4-?pyridyl-N-Oxide?methylphosphonic acid was synthesized successfully.And one series of totally 3 lanthanide phosphonate complexes were synthesized under hydrothermal method,namely,[Ln3?PA??3?HPA??3]·4H2O{Ln=Ho?17?,Er?18?,Lu?19?}{H2L?=4-?pyridyl-N-Oxide?methylphosphonic acid}.The crystal structures of complexes 17-19 were confirmed by X-ray diffraction analysis.And a simple contrastive analysis is made with the complex 1-19.3)Bacteriostasis of plant pathogenic bacteria analysis:bacteriostasis of plant pathogenic bacteria of complexes to gram-negative bacteria?Pseudomonas syringae maculicola ES4326 and Pseudomonas syringae pv.tomato DC3000?and gram-positive bacteria?Bacillus subtilis?were determined by disc diffusion test.The minimum inhibitory concentration?MIC?of complexes were tested at the same time. |
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