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水杨醛缩天冬酰胺Schiff碱稀土配合物的合成与抗·O₂^-生物活性

Synthesis and ·O₂^- Scavenging Bioactivity of Rare Earth Complexes with N-（Salicylaldehyde） Asparagine Schiff Base

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【Author】 Yi Guobin~(1),Chen Deyu~2 (1.Faculty of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510006,China;2.Department of Chemistry,Zhejiang University,Hangzhou 310027)

【机构】广东工业大学轻工化工学院；浙江大学化学系广东广州510006；浙江杭州310027；

【摘要】合成了水杨醛缩天冬酰胺的系列稀土配合物,通过熔点测定、元素分析、摩尔电导率、磁化率、TG-DTA、UV、IR、1H-NMR、EPR谱等对配体及配合物的组成进行了表征,得到配合物的可能组成为RE3(AS)2(NO3)5.3C2H5OH.H2O。磁化率数据表明配合物为三中心结构,摩尔电导率数据表明配合物为1∶2型电解质,即2个NO3-在外界,3个NO3-在内界。TG-DTA,IR,1H-NMR等分析表明水分子参与配位,CO2-,NO3-均以双齿配位,Nd3+的顺磁位移效应使与之相邻质子的1H-NMR位移值增大。抗超氧阴离子自由基(.O2-)实验表明,配合物具有显著的抗.O2-生物活性。更多还原

【Abstract】 Seven rare earth complexes with N-（salicylaldehyde） asparagine Schiff base were synthesized.Their composition was characterized by elemental analysis,melting point,molar conductivity,magnetic susceptibility,TG-DTA,UV spectra,IR spectra and（）¹H-NMR spectra.General formula of the complexes is probably written as RE₃（AS）₂（NO₃）₅·3C₂H₅OH·H₂O.The complexes are proved to be trinuclear by magnetic susceptibility and 1∶2 type electrolyte by molar conductivity,that is to say,three NO₃^-ions are coordinated to RE³⁺ ion and the other two are not.It is suggested that H₂O is coordinated with RE³⁺ ion,both CO₂^-and NO₃^-are bidentate coordinated,and all three C₂H₅OH are free.The complexes show strong（·O^-₂） scavenging bioactivity.更多还原