Functionalized Fluorophosphonium Ions.
Chemistry
; 25(42): 9861-9865, 2019 Jul 25.
Article
em En
| MEDLINE
| ID: mdl-31095811
ABSTRACT
Efforts to prepare an elusive donor-free phosphenium ion, [R2 P]+ , led us to synthesize functionalized fluorophosphonium cations of the type [R2 P(F)X]+ (X=SiEt3 , H, F), which were obtained from the related neutral fluorophosphines R2 PF and R2 PF3 upon protonation and reaction with solvated [Et3 Si]+ ions (R=2,6-Mes2 C6 H3 ). The hypothetical reductive elimination of [R2 P(F)SiEt3 ]+ and [R2 P(F)H]+ affording [R2 P]+ , Et3 SiF and HF, respectively, was calculated to be endothermic by 40.1 and 190.6â
kJ mol-1 .
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MEDLINE
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En
Ano de publicação:
2019
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Article