Flexible SNS pincer complexes of copper: Synthesis, structural characterisation and application in n-octane oxidation
作者:Lynette Soobramoney、Muhammad D. Bala、Holger B. Friedrich、Michael N. Pillay
DOI:10.1016/j.poly.2019.02.016
日期:2019.5
Two new tridentate SNS ligands based on a flexible, straight chain amine backbone were prepared and in combination with three related but previously reported ligands were reacted with CuCl2 to yield new tridentate pincer-type copper(II) complexes. The molecular structures of the new ligands bis(cyclohexylthioethyl)methylamine (L1d), bis(t-butylthioethyl)methylamine (L1e), and all the complexes Cu[
摘要制备了两个新的基于柔性直链胺骨架的三齿SNS配体,并与三个相关但先前报道的配体与CuCl2反应生成了新的三齿钳型铜(II)配合物。新配体双(环己基硫代乙基)甲胺(L1d),双(叔丁基硫代乙基)甲胺(L1e)以及所有配合物Cu [双(硫代乙基)甲胺] Cl2(1)的分子结构,其中R =甲基(a) ; 乙基(b); 丁基(c); 环己基(d)和叔丁基(e);被一系列的光谱学和分析技术所证实。单晶X射线衍射分析确定了L1e盐和配合物的固态结构。配合物1a-e在由三齿SNS和两个氯供体定义的每个Cu(II)中心周围均显示出五坐标的配体几何形状。使用叔丁基过氧化氢和过氧化氢(H2O2)作为氧化剂,将络合物用作正辛烷氧化的催化剂。基于H2O2的系统可将正辛烷转化为C-8含氧化合物的产率高达36%,而醇的选择性高达78%。