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Issue 22, 2013
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Four-component assembly in the crystalline state driven by amidinium–carboxylate salt bridge formation from an aqueous solution

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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 Scheme 1). 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.

Graphical abstract: Four-component assembly in the crystalline state driven by amidinium–carboxylate salt bridge formation from an aqueous solution

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Publication details

The article was received on 12 Feb 2013, accepted on 03 Apr 2013 and first published on 04 Apr 2013


Article type: Paper
DOI: 10.1039/C3OB40309B
Citation: Org. Biomol. Chem., 2013,11, 3692-3698

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    Four-component assembly in the crystalline state driven by amidinium–carboxylate salt bridge formation from an aqueous solution

    T. Kusukawa, K. Matsumoto, H. Nakamura, W. Iizuka, K. Toyama and S. Takeshita, Org. Biomol. Chem., 2013, 11, 3692
    DOI: 10.1039/C3OB40309B

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