Pyridinium Trifluoroacetate: Spoked Columns of Hydrogen-Bonded Cyclic Dimers

The crystal structure of C₅H₆N⁺.C₂F₃O₂^- consists of three unique ion pairs. Each unique ion pair packs along a threefold screw axis to generate a distinct spoked column. The three distinct spoked columns are pseudosymmetrically related through a threefold screw axis. Each column comprises an ionic core and non-polar spokes. Columns pack in a manner that maximizes the non-polar interactions between them.

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