Dendrimers with a Copper(I) Bis(phenanthroline) Core: Synthesis, Electronic Properties, and Kinetics
作者:Elzbieta Gumienna-Kontecka、Yannick Rio、Cyril Bourgogne、Mourad Elhabiri、Rémy Louis、Anne-Marie Albrecht-Gary、Jean-François Nierengarten
DOI:10.1021/ic049945y
日期:2004.5.1
significant influence on the coordination geometry of the Cu(I) center, as deduced from their absorption spectra. Therefore, the variations of the rate constants only reflect changes resulting from the presence of the dendritic branches. The kinetics of the cyanide-mediated demetalation reaction indeed revealed that cyanide diffusion through the dendritic shell is slightly influenced by the size of
铜(I)双(螯合物)配合物Cu(L(0))(2)由2,9-二苯乙基-1,10-菲咯啉和Cu(CH(3)CN)(4)BF(4)制备)。派生的Cu(L(0))(2)已通过NMR,紫外可见光谱和X射线晶体学进行了表征。有趣的是,由于存在乙烯连接基,Cu(L(0))(2)中苯环和菲咯啉亚基之间的配位体pi-pi堆积相互作用不会引起Cu(L I)以固态或溶液为中心。合成Cu(L(0))(2)之后,树枝状化合物Cu(L(1)(-)(4))(2)与Cu(I)bis(2,9-diphenethyl-1,10-菲咯啉型树枝状枝环包围的菲咯啉已准备好,并研究了其氰化物辅助脱金属的动力学。重要的,从其吸收光谱可知,周围的树枝状楔对Cu(I)中心的配位几何形状没有显着影响。因此,速率常数的变化仅反映出由于树枝状分支的存在而引起的变化。氰化物介导的脱金属反应的动力学确实表明,氰化物通过树枝状壳的扩散受分支大小的影响