6533b82bfe1ef96bd128d953

RESEARCH PRODUCT

CH-Anion versus anion-π interactions in the crystal and in solution of pentafluorobenzyl phosphonium salts

Fiete DierkesKari RissanenJohannes SackmannArto ValkonenMichael MüllerAndreas HoffmannMarkus Albrecht

subject

Inorganic ChemistryCrystalchemistry.chemical_compoundchemistryPolymer chemistryInorganic chemistrySolid-stateChemiePhosphoniumIon

description

A series of phosphonium salts with pentafluorobenzyl substituents have been synthesized and were investigated in the crystal as well as in solution. The solid state structures of 1a, 1b and 2d reveal the presence of anion-π as well as CH-anion interactions. The two attractive, yet competitive forces seem to act in concert and a directing effect of the CH interaction on the relative position between anion and π-system is observed. The search for anion-π interactions in solution failed. Only CH-anion interactions proved to be important in solution.

10.1039/c0dt00766h