Substitution-Pattern- and Counteranion-Depending Ion-Pairing Assemblies Based on Electron-Deficient Porphyrin-AuIII Complexes.

Porphyrin-AuIII complexes, which were partially or totally modified with C6 F5 at the meso positions, were synthesized. The highly electron-withdrawing substituents induced electron-deficient states and Lewis acid properties. Single-crystal X-ray analysis of the ion pairs revealed ion-pairing assemblies with characteristics dependent on the number and substitution pattern of the C6 F5 units and the geometries of the anions.