2-Amino-4-methylpyridinium trifluoroacetate

The asymmetric unit of the title compound, C6H9N2+·C2F3O2−, contains two independent 2-amino-4-methylpyridinium cations and two independent trifluoroacetate anions. The F atoms of both anions are disordered over two sets of sites, with site occupancies of 0.50 (3) and 0.50 (3) in one of the anions, and 0.756 (9) and 0.244 (9) in the other. In the crystal, the cations and anions are linked into chains along the b axis by N—H...O hydrogen bonds and these chains are cross-linked by C—H...O hydrogen bonds, forming a two-dimensional network lying parallel to (101). The crystal structure is further stabilized by π–π interactions between the pyridinium rings [centroid–centroid distances = 3.5842 (13) and 3.5665 (16) Å].

Abstract licence: CC BY

1. 10.

   Structure validation in chemical crystallography · 2009

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