title: Liquid membrane transport of potassium fluoride by the organotin-based ditopic host Ph2FSnCH2SnFPh-CH2-[19]-crown-6.
abstract: The extraction of KF from aqueous media and transport through an organic membrane is extremely challenging owing to the high hydration energies of especially the F-anions. A novel organotin-based ditopic host containing the Ph2FSnCH2SnFPh-CH2-moiety (selective for fluoride anion complexation) covalently linked to 19-crown-6 (selective for potassium cation complexation) is reported. It transports KF up to 5.5- and 2.5-times faster than the dual-host mixture composed of the bidentate Lewis acid Ph2FSnCH2SnFPh2and 18-crown-6 at low and high salt concentrations, respectively.
authors.affiliation: Lehrstuhl für Anorganische Chemie II, Technische Universität Dortmund, D-44221 Dortmund, Germany. klaus.jurkschat@tu-dortmund.de and Department of Chemistry, Faculty of Sciences, University of Dschang, P.O. Box 67, Dschang, Cameroon.
authors.forename: Alain Charly
authors.initials: AC
authors.lastname: Tagne Kuate
authors.affiliation: Lehrstuhl für Anorganische Chemie II, Technische Universität Dortmund, D-44221 Dortmund, Germany. klaus.jurkschat@tu-dortmund.de and Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan.
authors.forename: Muhammad Moazzam
authors.initials: MM
authors.lastname: Naseer
authors.affiliation: Lehrstuhl für Anorganische Chemie II, Technische Universität Dortmund, D-44221 Dortmund, Germany. klaus.jurkschat@tu-dortmund.de.
authors.forename: Klaus
authors.identifier: http://orcid.org/0000-0001-9930-858X
authors.initials: K
authors.lastname: Jurkschat