Further Development of Weakly Coordinating Cations: Fluorinated Bis(triarylphosphoranylidene)iminium Salts

Chemistry : a European Journal
Lisa MannSebastian Riedel

Abstract

So far unknown bis(triarylphosphoranylidene)iminium cations [PPN]+with one fluorine atom in para ([PPN-1F]+), two in meta ([PPN-2F]+), or three in para and meta positions of the phenyl rings ([PPN-3F]+) were obtained by a newly developed one-pot reaction. These halogenated [PPN]+cations were characterized by IR and Raman spectroscopy in comparison with quantum-chemical calculations, ESI+mass spectrometry, NMR spectroscopy, and single-crystal X-ray diffraction. To assess their quality as weakly coordinating cations and the associated ability to stabilize labile anions, the electrostatic potential and fluoride-ion affinity were calculated and compared with those of the unsubstituted and so far unknown perfluorinated [PPN-5F]+cations.

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Citations

May 10, 2018·ChemSusChem·Johannes IngenmeyBarbara Kirchner
Sep 19, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Jörg HarloffAlexander Villinger
Dec 8, 2020·Frontiers in Chemistry·Markus RohdenburgJonas Warneke

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