4,4'-Oxybis(2,6-di-methyl-pyridinium) bis-(tri-fluoro-methane-sulfonate)

Acta Crystallogr Sect E Struct Rep Online. 2013 Oct 12;69(Pt 11):o1633-4. doi: 10.1107/S1600536813027505.

Abstract

In the asymmetric unit of the title salt, C14H18N2O(2+)·2CF3O3S(-), the components are linked by two N-H⋯O and one C-H⋯O hydrogen bonds. The dipyridinium salt demonstrates a skew conformation based upon C-O-C-C torsion angles of 61.5 (3) and 15.1 (4)°. A C-O-C angle of 119.3 (2)° and C-O bond distances of 1.364 (3) and 1.389 (3) Å are consistent with other dipyridyl ethers. The planes of the pyridyl rings exhibit a twist angle of 67.89 (8)°. One of the tri-fluoro-methane-sulfonate ions shows disorder of the F atoms [in a 0.52 (7):0.48 (7) occupancy ratio] and an O atom [0.64 (8):0.36 (8) occupancy ratio]. In the crystal, the components are linked by C-H⋯O inter-actions, which form chains along [101].