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作 者:罗世霞[1] 王安平[2] 张彩云[1] 张笑一[1] 陈萱[1]
机构地区:[1]贵州师范大学化学与材料科学学院,贵州贵阳550001 [2]贵州师范大学科学技术处,贵州贵阳550001
出 处:《化学试剂》2015年第10期877-880,912,共5页Chemical Reagents
基 金:贵州省科学技术基金资助项目(黔科合LH字[2014]7054号)
摘 要:由威廉姆逊反应制备得到了1,2-乙二硫醚基桥联两个乙酰丙酮结构单元的双β-二酮分子1,2-二(3-硫醚基-2,4-戊二酮基)乙烷,采用紫外光谱法考察了1,2-二(3-硫醚基-2,4-戊二酮基)乙烷对8种稀土金属离子(Eu3+、Y3+、Tb3+、La3+、Ce3+、Sm3+、Er3+、Tm3+)的离子识别能力及其对Tb3+离子的萃取性能和液膜传输性能。结果表明,其对Tb3+离子具有良好的选择性识别作用和优良的萃取性能以及液膜传输性能,同时紫外光谱滴定模拟实验说明了该化合物与Tb3+离子之间形成1∶1型配合物,并且其还可对水样中Tb3+离子的含量进行分析。The bis-β-diketone molecule incorporating 1,2-ethanedithioether bridge between the γ-carbons of respective β-diketone units of 1,2-bis( 3-thio-2,4-pentanedionate) ethane has been synthesized via the Williamson reaction. The ion recognition,extraction and liquid membrane transport properties of 1,2-bis( 3-thio-2,4-pentanedionate) ethane with eight rare earth metal ions( Eu^3 +,Y^3 +,Tb^3 +,La^3 +,Ce^3 +,Sm^3 +,Er^3 +,Tm^3 +) had been investigated by the ultraviolet spectrophotometry. The results showed that 1,2-bis( 3-thio-2,4-pentanedionate) ethane has a good selective recognition,extraction and liquid membrane transport properties for Tb3 +ion. Additionally,the 1 ∶ 1 coordination binding stoichiometry of 1,2-bis( 3-thio-2,4-pentanedionate) ethane with Tb3 +ion was determined by ultraviolet spectroscopy titrations,and the concentration of Tb3 +ion in water was also analyzed with 1,2-bis( 3-thio-2,4-pentanedionate) ethane as the recognition receptor.
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