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Acta Crystallogr Sect E Struct Rep Online. 2013 Jun 8;69(Pt 7):o1051. doi: 10.1107/S1600536813015535. eCollection 2013.

2-Methyl-1,2,4-triazolo[4,3-a]pyridin-2-ium tetra-fluoroborate.

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  • 1Department of Medicinal Chemistry, Luzhou Medical College, Luzhou, Sichuan, 646000, People's Republic of China.


In the title salt, C7H8N3 (+)·BF4 (-), the 1,2,4-triazolo[4,3-a]pyridinium cation is planar [maximum deviation of 0.016 (2) Å for all non-H atoms]. The cation and anion constitute a tight ionic pair with an F⋯N [2.911 (4) Å] inter-molecular attractive inter-action. The ionic pairs form dimers via stacking inter-actions between inversion-related cations, the normal distance between the cation planes being 3.376 (5) Å. The dimers are packed in stacks along the a axis and linked via C-H⋯F hydrogen bond, forming a three-dimensional network.

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