Phosphorus-fluorine chemistry. XXVII. Aryloxy-substituted fluorophosphoranes

Article abstract of DOI:10.1021/ic50106a020

The silyl ethers C₆H₅OSi(CH₃)₃ and C₆F₅OSi(CH₃)₃ undergo silicon-oxygen bond cleavage reactions with fluorophosphoranes, R_nPF_5-n (n = 0, 1, 2; R = CH₃, C₆H₅, (CH₃)₂N in the case of C₆H₅OSi(CH₃)₃; n = 0, 1, 2; R = CH₃, C₆H₅ in the case of C₆F₅OSi(CH₃)₃), to give a series of thermally stable compounds of the types (C₆H₅O)_3-nPR_nF₂ and (C₆F₅O)_3-nPR_nF₂ (n = 0, 1, 2). The intermediate (RO)₂PF₃, assumed in the reactions of PF₅ with ArOSi(CH₃)₃, was isolated only in the form of the isomeric stable phosphonium salt [(RO)₄P] [PF₆]. The ³¹P and ¹⁹F nmr spectra of the new compounds are reported and discussed in terms of the structures of the molecules.