由Williamson反应合成了1,3-丙二硫醚基桥联2个乙酰丙酮的双β-二酮化合物1,3-二(3-硫醚基-2,4-戊二酮基)丙烷(L1),其分子结构经元素分析、1H NMR、13C NMR、MS、IR及UV等技术手段表征,采用单晶X射线衍射方法确定了双β-二酮L1的晶体结构,双β-二酮L1属于单斜晶系,C2/c空间群,晶胞参数a=1.40679(9) nm,b =0.76521(5) nm,c=1.43213(10) nm,α=γ=90°,β=94.552°,V=1.53681 (18) mn3,Z=4,Dc=1.316g/cm3,μ =0.353mm-1,F(000) =648;结构分析表明,双β-二酮L1在固体或氯仿溶液中均是以烯醇式异构体形式存在.通过紫外光谱法考察了双β-二酮L1对金属离子的识别能力和萃取性能,结果表明,双β-二酮L1对Ni(Ⅱ)离子具有良好的选择性识别作用和萃取选择性能.
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