Encapsulation of Halocarbons in a Tetrahedral Anion Cage1. Issue 30 (5th June 2015)

• Record Type: Journal Article
• Authors: Yang, Dong; Zhao, Jie; Zhao, Yanxia; Lei, Yibo; Cao, Liping; Yang, Xiao‐Juan; Davi, Martin; de Sousa Amadeu, Nader; Janiak, Christoph; Zhang, Zhibin; Wang, Yao‐Yu; Wu, Biao
• Is Part Of: Angewandte Chemie international edition. Volume 54:Issue 30(2015)
• Page Start: 8658
• Page End: 8661
• Publication Date: 2015-06-05
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201502399
• Languages: English
• ISSNs: 1433-7851

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>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 A₄L₄‐type (A=anion) tetrahedral cage, [(PO₄)₄<bold>L</bold>₄]¹²⁻, assembled from a C₃‐symmetric tris(bisurea) ligand (<bold>L</bold>) and phosphate ion (PO₄³⁻), readily accommodates a series of quasi‐tetrahedral halocarbons, such as the Freon components CFCl₃, CF₂Cl₂, CHFCl₂, and C(CH₃)F₃, and chlorocarbons CH₂Cl₂, CHCl₃, CCl₄, C(CH₃)Cl₃, C(CH₃)₂Cl₂, and C(CH₃)₃Cl. The guest encapsulation in the solid state is confirmed by crystal structures, while the host–guest interactions in solution were demonstrated by NMR techniques.</p> </abstract>