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Updated: Oct 12, 2025

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Fluoride anion complexation and transport using a stibonium cation stabilized by an intramolecular PO → Sb pnictogen
Vanessa M Gonzalez1, Gyeongjin Park1, Mengxi Yang1
1Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, USA. francois@tamu.edu.
Abstract:
We describe the synthesis of [o-Ph2P(O)(C6H4)SbPh3]+ ([2]+), an intramolecularly base-stabilized stibonium Lewis acid which was obtained by reaction of [o-Ph2P(C6H4)SbPh3]+ with NOBF4. This cation reacts with fluoride anions to afford the corresponding fluorostiborane o-Ph2P(O)(C6H4)SbFPh3, the structure of which indicates a strengthening of the PO → Sb interaction. When deployed in fluoride-containing POPC unilamellar vesicles, [2]+ behaves as a potent fluoride anion transporter whose activity greatly exceeds that of [Ph4Sb]+.
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