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Figure 3
The crystal packing of (I)[link], showing the hydrogen-bonded helical chains formed in this structure, with an alternating arrangement of the pyridinium and trifluoro­methane­sulfonate ions. Chains (i) and (iii) extend along the 21a screw, and chains (ii) and (iv) along the 21b screw axis. The N—H⋯O hydrogen bonds (Table 1[link]) are indicated by dashed lines. All H atoms have been omitted.

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 65| Part 10| September 2009| Pages o509-o511
doi:10.1107/S0108270109034866
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