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- W2597677519 abstract "Abstract The nucleophilicity and Lewis basicity of sterically hindered phosphines, widely used in catalysis and in frustrated Lewis pair (FLP) chemistry, have been quantified by determining the rates and equilibrium constants of their associations with reference systems (benzhydrylium and tritylium ions) of calibrated electrophilicities and Lewis acidities. These structure–reactivity investigations allow a rationalization of the Lewis acid–base interactions all along the way from covalent Lewis adducts to FLPs. Comparisons of the association of phosphines of increasing sizes (Ph 3 P, ( o ‐tolyl) 3 P, and t Bu 3 P) with the triarylborane B(C 6 F 5 ) 3 and with the isoelectronic tritylium ions Ar 3 C + provide detailed insights for the future fine‐tuning of the reactivities of FLPs. As a proof of concept, tritylium‐ion‐derived FLPs were shown to react with alkynes, as reported for the FLPs derived from the benchmark triarylborane B(C 6 F 5 ) 3 ." @default.
- W2597677519 created "2017-04-07" @default.
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- W2597677519 creator A5054635433 @default.
- W2597677519 creator A5067185409 @default.
- W2597677519 date "2017-05-04" @default.
- W2597677519 modified "2023-10-14" @default.
- W2597677519 title "Reactivity-Tuning in Frustrated Lewis Pairs: Nucleophilicity and Lewis Basicity of Sterically Hindered Phosphines" @default.
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- W2597677519 doi "https://doi.org/10.1002/chem.201701080" @default.
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- W2597677519 hasPublicationYear "2017" @default.
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