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Triphenylmethyl hexafluorophosphate : ウィキペディア英語版 | Triphenylmethyl hexafluorophosphate
|Section2= |Section7= }} Triphenylmethyl hexafluorophosphate is an organic salt with the formula C(C6H5)3PF6. This compound is a brown powder that is air sensitive and changes colors when exposed to light. Triphenylmethyl hexafluorophosphate is used as a catalyst and reagent in organic syntheses. ==Preparation== Triphenylmethyl hexafluorophosphate is generated by two ways. The first method is by combining silver hexafluorophosphate with triphenylmethyl chloride: :AgPF6+C(C6H5)3Cl→C(C6H5)3PF6+AgCl The second method of generating triphenylmethyl hexafluorophosphate is through the reaction of triphenylmethyl chloride with an ether complex of hexafluorophosphoric acid: :Ph3CCl+HPF6·O(C2H5)2→Ph3C+PF−6+HCl+(C2H5)2O Triphenylmethyl chloride is afforded by combining carbon tetrachloride and benzene in a Friedel-Crafts reaction.〔
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