1 H, 19 F, and 31 P PGSE NMR Diffusion Studies on Chiral Organic Salts: Ion Pairing and the Dependence of a Diffusion Value on Diastereomeric Structure

1 H, 19 F and 31 P pulsed field gradient spin‐echo (PGSE) diffusion studies on chiral organic salts that contain hexacoordinate phosphate anions, namely tris(tetrachlorobenzenediolato)phosphate( V ) (TRISPHAT) and bis(tetrachlorobenzenediolato)mono([1,1′]binaphthalenyl‐2,2′diolato)‐phosphate( V ) (BINPHAT), are reported. The first example of the dependence of a diffusion value on diastereomeric structure is presented. Marked solvent and concentration effects on the diffusion constants ( D ) of these salts are noted and the question of ion pairing is discussed.