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Updated: May 11, 2026

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Four-component assembly in the crystalline state driven by amidinium-carboxylate salt bridge formation from an
Takahiro Kusukawa1, Kazuya Matsumoto, Hajime Nakamura
1Department of Chemistry and Materials Technology, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan. kusu@kit.ac.jp
Abstract:
A series of diamidine dihydrochlorides was prepared utilizing a spacer unit to control the distance between the two amidinium groups. The introduction of two amidinium groups to the 1,8-position of each spacer unit (i.e., 9,10-dihydroanthracene, anthracene, biphenylene) can control the direction of formation of a self-assembled structure. The fine-tuning of the distances between the two amidinium groups in the spacer units can help control the stabilizing interactions of two carboxylic acid units (intermolecular attraction) after the four-component assembly (see ). Based on this concept, we succeeded in the formation of a four-component box-like assembled structure using amidinium-carboxylate salt bridge formation in the crystalline state from aqueous solutions.
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