Differentiation of Oxygen Atom Chirality in Copper(II) Complexes with Dipicolylamine‐Derived Ligands
作者:Yuji Mikata、Tomomi Fujimoto、Noko Imai、Shin‐ichi Kondo
DOI:10.1002/ejic.201200521
日期:2012.9
copper center and the control of chirality around the copper-coordinated oxygen atom are discussed. The copper center exhibits a pentacoordinate geometry with these ligands, as evidenced by X-ray crystallography. The steric effect of the quinoline ring in the LQ complex prevents the coordination of a perchlorate anion to the copper center, which affords the pentacoordinate divalent complex with a shorter
氧原子与铜(II)中心的醚配位由二吡啶甲胺(DPA)衍生的配体,N-[2-(2-吡啶基甲氧基)乙基]-N,N-双(2-吡啶基甲基)胺(LPy)支撑), N-[2-(2-喹啉甲氧基)乙基]-N,N-双(2-吡啶基甲基)胺(LQ), N-[3-(2-吡啶基甲氧基)-1-丙基]-N,N-双(2-吡啶基甲基)胺(L'Py), N-2-[1-(2-吡啶基)乙氧基]乙基}-N,N-双(2-吡啶基甲基)胺(LPy*1), N- [2-(2-吡啶基甲氧基)-1-丙基]-N,N-双(2-吡啶基甲基)胺(LPy*2)和N-[2-(羧甲氧基)乙基]-N,N-双(2) -吡啶基甲基)胺(HLCOO),已被检查。讨论了促进这些配体的醚氧原子与铜中心配位的因素以及铜配位氧原子周围手性的控制。铜中心与这些配体呈现五坐标几何,X 射线晶体学证明。LQ 络合物中喹啉环的空间效应阻止了高氯酸根阴离子与铜中心的配位,这使得五配位二价络合物具有比相应吡啶配体