The Preparation and X-Ray Structure of [AsPh4][Ph2P(S)NSiMe3] · 0.5 THF |
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Authors: | Tristram Chivers Massod Parvez Michelle A Seay |
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Abstract: | The reaction of Ph2P(S)N(SiMe3)2 with potassium tert-butoxide in a 1:1 molar ratio produces KPh2P(S)NSiMe3], which was converted to the AsPh4+ salt by metathesis with AsPh4]Cl. The X-ray crystal structure of AsPh4]Ph2P(S)NSiMe3] · 0.5 THF consists of noninteracting AsPh4+ and Ph2P(S)NSiMe3? ions with d(P? S) = 1.980(4) Å and d(P? N) = 1.555(8) Å. The PNSi bite angle in the anion is 136.3(5)°. Electrophilic attack by Ph2P(S)Cl occurs at the sulfur atom of Ph2P(S)NSiMe3?. The oxidation of the anion with iodine produces a disulfide which regenerates KPh2P(S)NSiMe2] upon treatment with potassium tert-butoxide. |
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Keywords: | [AsPh4][Ph2P(S)NSiMe3] · 0 5 THF preparation crystal structure |
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