Synthesis, X-ray structures, and characterization of hexafluoro-iso-propoxide group 3 and lanthanide precursors
作者:Timothy J. Boyle、Michael L. Neville、Jeremiah M. Sears、Roger E. Cramer、Mark A. Rodriguez、Todd M. Alam、Samuel P. Bingham
DOI:10.1016/j.poly.2016.07.030
日期:2016.11
(hfip) lanthanide complexes was synthesized from the amide-alkoxide exchange reaction of the lanthanide bis-trimethylsilyl amide dissolved in toluene and an excess amount of H-hfip. The products were isolated and identified by single crystal X-ray diffraction as: [cis-(H2O)2(hfip)2Ln(μ-hfip)]2 (Ln = Ce, Pr, Nd, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y), [trans-(H2O)2(hfip)2Sc(μ-hfip)]2 (Sc), [(H2O)2(hfi
摘要通过将镧系元素双三甲基甲硅烷基酰胺溶于甲苯和过量的H-hfip进行酰胺-醇盐交换反应,合成了一系列水合六氟-异丙氧基(hfip)镧系元素配合物。分离出产物,并通过单晶X射线衍射鉴定为:[cis-(H2O)2(hfip)2Ln(μ-hfip)] 2(Ln = Ce,Pr,Nd,Eu,Gd,Tb,Dy, Ho,Er,Tm,Yb,Lu,Y),[反式((H2O)2(hfip)2Sc(μ-hfip)] 2(Sc),[(H2O)2(hfip)2La2(μ-hfip)3 (μ3-OH)] 2(La-OH)和[(H2O)(hfip)2Sc(μ-hfip)(μ-OH)(μ3-OH)Sc(H2O)(hfip)] 2(Sc-OH )。发现所有物种均具有被认为存在于hfip中的结合的H2O分子。对于非氧代物种,形成具有一个桥联和两个末端hfip配体的双核物种。所有样品的水都是顺式的,但是最小的导数Sc 他们以反式排列的位置。氧自由基是由“老化的”