American Chemical Society, Crystal Growth and Design, 10(13), p. 4200-4203, 2013
DOI: 10.1021/cg401161d
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We report herein a novel supramolecular synthon based on the electrostatic compression phenomenon. A zwitterionic squaric acid/squaramide compound serves as model for the design of new face-to-face pi-stacked architectures in the crystalline state which, in combination with charge-assisted hydrogen bonds, can be used to synthesize multicomponent crystals.