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Acta Cryst. (2013). E69, o20
[ doi:10.1107/S1600536812049045 ]

(Biphenyl-2,2'-diyl)di-tert-butylphosphonium trifluoromethanesulfonate

A. Muller and C. W. Holzapfel

Abstract: To aid in the elucidation of catalytic reaction mechanism of palladacycles, we found that reaction of trifluoromethanesulfonic acid with a phosphapalladacycle resulted in elimination of the palladium and formation of the title phospholium salt, C20H26P+·CF3SO3-. Selected geometrical parameters include P-biphenyl (av.) = 1.801 (3) Å and P-t-Bu (av.) = 1.858 (3) Å, and significant distortion of the tetrahedral P-atom environment with biphenyl-P-biphenyl = 93.93 (13)° and t-Bu-P-t-Bu = 118.82 (14)°. In the crystal, weak C-H...O interactions lead to channels along the c axis that are occupied by CF3SO3- anions.

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