Charge‐Assisted Halogen Bonding in an Ionic Cavity of a Coordination Cage Based on a Copper(I) Iodide Cluster
Anssi Peuronen, Anni I. Taponen, Elina Kalenius, Ari Lehtonen, Manu Lahtinen
Abstract
Abstract The design of molecular containers capable of selectively binding specific guest molecules presents an interesting synthetic challenge in supramolecular chemistry. Here, we report the synthesis and structure of a coordination cage assembled from Cu 3 I 4 − clusters and tripodal cationic N‐donor ligands. Owing to the localized permanent charges in the ligand core the cage binds iodide anions in specific regions within the cage through ionic interactions. This allows the selective binding of bromomethanes as secondary guest species within the cage promoted by halogen bonding, which was confirmed by single‐crystal X‐ray diffraction.
Topics & Concepts
IodideIonic bondingChemistrySupramolecular chemistryHalogenHalogen bondCrystallographyCluster (spacecraft)CageCationic polymerizationLigand (biochemistry)MoleculeCoordination complexCopperCrystal structureStereochemistryIonInorganic chemistryPolymer chemistryMetalOrganic chemistryReceptorAlkylCombinatoricsBiochemistryComputer scienceMathematicsProgramming languageSupramolecular Chemistry and ComplexesMetal-Organic Frameworks: Synthesis and ApplicationsCrystallography and molecular interactions