Fig. 3: Fluorinating reagents from fluorspar and mechanistic insight.
From: Fluorspar to fluorochemicals upon low-temperature activation in water
a, Preparation of HBF4 from AGF, B(OH)3 and H2Ox·2H2O with 19F NMR (D2O) spectra of reaction mixture containing [B–F] products HBF4, HBF3OH and HOxBF2. b, Preparation of KF, NaF, CsF, Me4NF and nBu4NF from AGF, SiO2 and H2Ox·2H2O with 19F NMR (D2O) spectra of reaction mixture containing [Si–F] products H2SiF6, H2SiF5OH and H2OxSiF4. The yields of H2SiF6, H2SiF5OH and H2OxSiF4 were determined by 19F NMR spectroscopy (further details provided in Supplementary Fig. 18). c, Monitoring the reaction of AGF (0.5 mmol) with anhydrous H2Ox with and without B(OH)3 by 19F NMR spectroscopy in D2O (HF, HBF4 and HBF3OH yield quantified by 19F NMR spectroscopy; details in Supplementary Figs. 6 and 7).
