Date Published: May 01, 2009
Publisher: International Union of Crystallography
Author(s): Tuoping Hu.
In the title compound, C12H14N22+·2I3−, the 1,1′-dimethyl-4,4′-bipyridinium (DMBP) dication is charge balanced by two triiodide ions. The DMBP dication is planar within 0.010 (5) Å. The asymmetric unit contains only half of the dication, the other half being generated by an inversion center. Weak C—H⋯I interactions link the ions into sheets parallel to (121).
For a dication with similar geometry, see: Russell & Wallwork (1972 ▶). For anions with comparable geometry, see: Marsh (2004 ▶); Madsen et al. (1999 ▶).