The effects of introducing sterically demanding aryl substituents in [Cu(N^N)(P^P)]<sup>+</sup> complexes
作者:Fabian Brunner、Stefan Graber、Yann Baumgartner、Daniel Häussinger、Alessandro Prescimone、Edwin C. Constable、Catherine E. Housecroft
DOI:10.1039/c7dt00782e
日期:——
The syntheses and characterizations of six [Cu(N^N)(POP)][PF6] and [Cu(N^N)(xantphos)][PF6] compounds (POP = bis(2-(diphenylphosphino)phenyl)ether, xantphos = 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene), in which N^N is a bpy ligand (1-Naphbpy, 2-Naphbpy, 1-Pyrbpy) bearing a sterically hindered 1-naphthyl, 2-naphthyl or 1-pyrenyl substituent in the 6-position, are reported. Single-crystal structure
六种[Cu(N ^ N)(POP)] [PF 6 ]和[Cu(N ^ N)(xantphos)] [PF 6 ]化合物的合成和表征(POP =双(2-(二苯基膦基)苯基)醚,xantphos = 4,5-双(二苯基膦基)-9,9-二甲基x吨),其中N ^ N是带有空间位阻的1-萘基的bpy配体(1-Naphbpy,2-Naphbpy,1-Pyrbpy),报道了在6-位的2-萘基或1-吡啶基取代基。五种配合物的单晶结构测定证实了铜(I)的扭曲四面体环境,并且优先考虑将N ^ N配体定向为在空间上需要的芳基远离(C 6 H 4)2POP的单位O或黄磷的s吨“碗”。bpy的环平面之间的夹角在5.8至26.0°的范围内,这与芳基单元和P ^ P配体的苯基取代基之间的相互作用有关。在室温下的溶液中,配合物经历动态行为,这已使用可变温度2D NMR光谱进行了研究。[Cu(N ^ N)(xantphos)]