Abstract
19F, 11B, and 29Si NMR spectroscopy was used to examine the behavior of the guest–host complexes (BF3· H2O)2· 18-crown-6 · 2H2O, (BF3· H2O)2· DCH-6B, and (DCH-6A · H3O)SiF5in acetone (DCH-6B and DCH-6A are the cis-anti-cis- and cis-syn-cis-isomers of dicyclohexano-18-crown-6, respectively). It was shown that molecular boron fluoride complexes undergo partial solvolysis in acetone to yield BF3· acetone as the main product; the ionic pentafluorosilicate complex does not experience significant solvolysis transformations.
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