| Summary: | The asymmetric unit of the co-crystal salt 2-amino-6-bromopyridinium 2,3,5,6-tetrafluorobenzoate, C5H6BrN2+·C7HF4O2−, contains one pyridinium cation and one benzoate anion. In the crystal, the aminopyridinium cationic unit forms two hydrogen bonds to the benzoate oxygen atoms in an R22(8) motif. Two pyridinium benzoate units are hydrogen bonded through self-complementary hydrogen bonds between the second amine hydrogen and a carboxylate O with a second R22(8) motif to form a discrete hydrogen-bonded complex containing two 2-amino-6-bromopyridinium moieties and two 2,3,5,6-tetrafluorobenzoate moieties. The 2-amino-6-bromopyridinium moieties π-stack in a head-to-tail mode with a centroid–centroid separation of 3.7227 (12) Å and adjacent tetrafluorobenzoates also π-stack in a head-to-tail mode with a centroid–centroid separation of 3.6537 (13) Å.
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