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Oxidative Addition of a CH Bond at a Two‐coordinated Phosphenium Cation Reaction of ArP(Cl)SAr (1) [Ar = 2,4,6‐(t‐Bu)3C6H2] with AgSbF6 in ether at 0°C affords the compound . This exists in two different forms 2a and 2b. Form 2a is a phosphonium cation. In the IR and 31P{1H} NMR spectra of 2b an interaction between the and SbF6− units is observed. 2a and 2b are in an equilibrium which depends on the temperature. 2 is formed via the unstable (arylthio)‐phosphenium cation with a σ2,λ3‐phosphorus.
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Lindner et al. (1986) studied this question.
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