期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 30, 页码 8658-8661出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201502399
关键词
anion coordination; anion-based tetrahedral cages; Freon; halocarbons; inclusion compounds
资金
- National Natural Science Foundation of China [21271149, 21325102]
Caged supramolecular systems are promising hosts for guest inclusion, separation, and stabilization. Well-studied examples are mainly metal-coordination-based or covalent architectures. An anion-coordination-based cage that is capable of encapsulating halocarbon guests is reported for the first time. This A(4)L(4)-type (A=anion) tetrahedral cage, [(PO4)(4)L-4](12-), assembled from a C-3-symmetric tris(bisurea) ligand (L) and phosphate ion (PO43-), readily accommodates a series of quasi-tetrahedral halocarbons, such as the Freon components CFCl3, CF2Cl2, CHFCl2, and C(CH3)F-3, and chlorocarbons CH2Cl2, CHCl3, CCl4, C(CH3)Cl-3, C(CH3)(2)Cl-2, and C(CH3)(3)Cl. The guest encapsulation in the solid state is confirmed by crystal structures, while the host-guest interactions in solution were demonstrated by NMR techniques.
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