| Autor: |
Yang, Yuchong, Ronson, Tanya K., Hou, Dingyu, Zheng, Jieyu, Jahović, Ilma, Luo, Kai Hong, Nitschke, Jonathan R. |
| Zdroj: |
Journal of the American Chemical Society; September 2023, Vol. 145 Issue: 35 p19164-19170, 7p |
| Abstrakt: |
A ZnII8L6pseudocube containing anthracene-centered ligands, a ZnII4L′4tetrahedron with a similar side length as the cube, and a trigonal prism ZnII6L3L′2were formed in equilibrium from a common set of subcomponents. Hetero-Diels–Alder reaction with photogenerated singlet oxygen transformed the anthracene-containing “L” ligands into endoperoxide “LO” ones and ultimately drove the integrative self-sorting to form the trigonal prismatic cage ZnII6LO3L′2exclusively. This ZnII6LO3L′2structure lost dioxygen in a retro-Diels–Alder reaction after heating, which resulted in reversion to the initial ZnII8L6+ ZnII4L′4⇌ 2 × ZnII6L3L′2equilibrating system. Whereas the ZnII8L6pseudocube had a cavity too small for guest encapsulation, the ZnII6L3L′2and ZnII6LO3L′2trigonal prisms possessed peanut-shaped internal cavities with two isolated compartments divided by bulky anthracene panels. Guest binding was also observed to drive the equilibrating system toward exclusive formation of the ZnII6L3L′2structure, even in the absence of reaction with singlet oxygen. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
