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  • 1
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Oxidative Addition of Hexafluoroacetone and Hexafluorobiacetyl to Phosphorus(III) Fluorides RR′PF: Synthesis of Chiral 1,3,2-Dioxaphospholanes and 1,3,2-DioxaphospholenesHexafluoroacetone and hexafluorobiacetyl react with fluorophosphines and fluorophosphites in an oxidative addition to form stable cyclic oxyphosphoranes containing the 1,3,2-dioxaphospholane (2) or 1,3,2-dioxaphospholene ring system (3). 19F and 31P NMR spectra are reported. The temperature dependency of the 19F NMR spectra in the range between -90 and +110°C is discussed in the light of pseudorotation processes at phosphorus(V).
    Notes: Hexafluoraceton und Hexafluorbiacetyl reagieren mit Fluorphosphinen und Fluorphosphiten unter Bildung stabiler cyclischer Oxyphosphorane mit dem 1,3,2-Dioxaphospholan- (2) bzw. Dioxaphospholen-Ringsystem (3). 19F- und 31P-NMR-Spektren werden mitgeteilt. Die Temperaturabhängigkeit der 19F-NMR-Spektren im Bereich von -90 bis +110°C wird auf der Basis von Pseudorotationsprozessen am Phosphor(V) diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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