Pyridin-1-ium carboxyformate–2-chloroacetic acid (1/1)

IUCrData Pub Date : 2025-01-01 DOI:10.1107/S2414314624012422

Nurlana D. Sadikhova , Farida M. Muradova , Narmina A. Guliyeva , Khudayar I. Hasanov , Tahir A. Javadzade , Ennio Zangrando , Alebel N. Belay

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Abstract

A salt co-crystal comprising pyridin-1-ium carboxyformate and 2-chloroacetic acid is stabilized by conventional and charge-assisted hydrogen bonds within a one-dimensional chain.

The asymmetric unit of the title salt co-crystal, C₅H₆N⁺·C₂HO₄⁻·C₂H₃ClO₂, comprises a pyridinium cation, a carboxyformate anion and a 2-chloroacetic acid molecule. In the crystal, the components are connected by hydrogen bonds within a one-dimensional chain in the a-axis direction which incorporates rather short, charge-assisted O—H⋯O hydrogen bonds; the pyridinium-NH group forms bifurcated N—H⋯(O,O) hydrogen bonds of different strength.

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