Related Experiment Video
Updated: Mar 2, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Selective and Reversible Fluoride Complexation from Water by a Cyclic Tri(phosphonio)methanide Dication
Sivathmeehan Yogendra1, Felix Hennersdorf1, Antonio Bauzá2
1Department of Chemistry and Food Chemistry, TU Dresden, 01062, Dresden, Germany.
Abstract:
Tri(phosphonio)methanide dication 32+ , prepared from a trifluoromethylsulfanylphosphonium dication (12+ ) via an intramolecular electrophilic aromatic substitution reaction, is an unexpected P-based, water-resistant Lewis acid that is capable to selectively and reversibly bind fluoride ions from organic/aqueous biphasic solution. The formed complex is an unusual fluorophosphorane ([3-F]OTf). The multiple donor-acceptor interactions of 32+ that are crucial for the fluoride fixation have been elucidated by quantum chemical calculation. Compound [3-F]OTf can also be used as a convenient anhydrous fluoride ion source and was probed as a suitable catalyst of the silylotrifluoromethylation of various aldehydes.
More Related Videos
12:05Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia
Published on: October 10, 2013
08:12Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
Published on: September 5, 2018
Related Concept Videos
Complexometric Titration: Ligands
EDTA: Chemistry and Properties
Formation of Complex Ions
EDTA: Auxiliary Complexing Reagents
Factors Affecting Solubility
Complexation Equilibria: The Chelate Effect