Synthesis of a dipolar cation shows unique ion-pairing structures with various anions, indicating new assembly possibilities.
A porphyrin AuIII complex comprising 5,10-penatafluorophenyl units was synthesized as a dipolar π-electronic cation. The π-electronic cation was combined with anions, including a bulky borate anion and planar π-electronic anions. The dipolar π-electronic cation formed crystal-state ion-pairing assemblies based on antiparallel stacking structures, which were stabilized by interionic dipole-dipole interactions.
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Kitayama et al. (2025) studied this question.
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