Liu Hua-Kui, Ronson Tanya K, Wu Kai, Luo Dong, Nitschke Jonathan R
Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K.
J Am Chem Soc. 2023 Jul 26;145(29):15990-15996. doi: 10.1021/jacs.3c03981. Epub 2023 Jul 13.
This work introduces the use of 8-aminoquinoline subcomponents to generate complex three-dimensional structures. Together with a tris(formylpyridine), 8-aminoquinoline condensed around Zn templates to produce a tris(tridentate) ligand. This ligand is incorporated into either a tricapped trigonal prismatic ZnL structure or a pair of pseudo-octahedral ZnL diastereomers, with and symmetries. Introduction of a methyl group onto the aminoquinoline modulated the coordination sphere of Zn, which favored the ZnL structure and disfavored the ZnL assembly. The tricapped trigonal prismatic ZnL architecture converted into a single ZnL cage diastereomer following the addition of a dianionic 4,4'-dinitrostilbene-2,2'-disulfonate guest. Four of these guests clustered tightly at the four windows of the ZnL cage, held in place through electrostatic interactions and hydrogen bonding, stabilize a single diastereomeric configuration with symmetry.
这项工作介绍了使用8-氨基喹啉亚组分来生成复杂的三维结构。8-氨基喹啉与三（甲酰基吡啶）一起围绕锌模板缩合，生成一种三（三齿）配体。该配体被并入三帽三棱柱形的ZnL结构或一对具有 和 对称性的伪八面体ZnL非对映异构体中。在氨基喹啉上引入甲基调节了锌的配位球，这有利于ZnL结构而不利于ZnL组装。在加入双阴离子4,4'-二硝基芪-2,2'-二磺酸盐客体后，三帽三棱柱形的ZnL结构转变为单一的ZnL笼状非对映异构体。四个这样的客体紧密聚集在ZnL笼的四个窗口处，通过静电相互作用和氢键固定在原位，稳定了具有 对称性的单一非对映异构构型。
