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噻吩甲酰基吡唑啉酮缩β-丙氨酸配合物的合成、表征及极谱行为

Synthesis, Characterization and Polarographic Behaviour of Complexes of Thenoylpyrazolone-β-alanine

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【作者】 李锦州杨昱张晓蕊俞志刚

【Author】 Li Jinzhou **, Yang Yu, Zhang Xiaorui, Yu Zhigang (Department of Chemistry, Harbin Normal University, Harbin 150080)

【机构】 哈尔滨师范大学化学系哈尔滨师范大学化学系 哈尔滨150080哈尔滨150080哈尔滨150080

【摘要】 在非水溶剂中 ,β 丙氨酸与 1 苯基 3 甲基 4 (2 噻吩甲酰基 )吡唑啉酮 5反应合成新型酰基吡唑啉酮席夫碱化合物 1 苯基 3 甲基 4 (2 噻吩甲酰基 )吡唑啉酮 5缩 β 丙氨酸 (HL) .通过回流席夫碱和金属硝酸盐合成了UO2 (Ⅱ )、Cu(Ⅱ )、Co(Ⅱ )和Fe(Ⅱ )金属配合物 .在乙酸 乙酸钠 (pH =4 .6 )缓冲溶液 饱和甘汞电极体系中 ,测量电位 - 1.2 4V处 ,测得铜配合物的极谱波 .元素分析及摩尔电导值表明 ,新配合物的组成为 [UO2 L2 ]·H2 O ,[CuL2 ]·2H2 O ,[CoL2 ]·2H2 O和 [FeL2 ]·2H2 O .运用红外光谱、紫外光谱、核磁共振谱、热谱和磁矩对配合物进行了表征 .结果表明 ,配合物的中心离子 (除UO2 2 + 以外 )均为 6配位 .铜配合物的Cu2 + 还原产生峰电流 ,其电极反应转移 1个电子 .

【Abstract】 A new acylpyrazolone Schiff base and its metal complexes were synthesized. The electrochemical behaviour of complexes was studied. In non-aqueous solvent, the new Schiff base 1-phenyl-3-methyl-4-(2-thenoyl)-5-pyrazolone-β-alanine (HL) was synthesized by the reaction of β- alanine with 1-phenyl-3-methyl- 4-(2-thenoyl)-5-pyrazolone and its complexes UO 2(II), Cu(II), Co(II) and Fe(II) were obtained from refluxing a solution of Schiff base and metal nitrate. The polarographic wave of Cu(II) complex was determined at -1.24 V(vs.SCE) in the medium of HAc-NaAc (PH=4.6). On the basis of elemental analysis and molar conductance, the general formula of the complexes, \[UO 2L 2\]·H 2O, \·2H 2O, \·2H 2O and \·2H 2O, were given. They were characterized by IR, UV-visible,1H NMR, 13C NMR, thermal analyses and magnetic moments. The results show that the metal ions except UO 2 2+ exhibit six coordination in the complexes. The peak current is produced by the reduction of Cu 2+ in the copper complex, and the number of electron transfer is 1 at electrade reaction.

【基金】 ProjectsupportedbythekeyscientificresearchfoundationofChineseeducationministry,thenaturesciencefoundationofHeilongjiangprovince(B0106)andthebackboneteacherinnovationprogramfoundationofuniversityinHeilongjiangprovince.
  • 【文献出处】 化学物理学报 ,Chinese Journal of Chemical Physics , 编辑部邮箱 ,2004年05期
  • 【分类号】O641.4
  • 【被引频次】11
  • 【下载频次】138
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