Acta Cryst. (2003). E59, o917-o918  [ doi:10.1107/S1600536803012376 ]

N-Methyl-N'-(3-phthalimidopropyl)-4,4'-bipyridinium diiodide

K. Sakai, K. Okamoto, S. Takahashi and K. Yokokawa

Abstract: The asymmetric unit of the title compound, C₂₂H₂₁N₃O₂²⁺·2I^-, consists of a substituted bipyridinium cation and two iodide anions. The dihedral angle between the two rings within the phthalimide moiety is 1.7  (3)°, where the r.m.s. deviations for the five- and six-membered rings are 0.006 and 0.004  Å, respectively. On the other hand, the two pyridinium rings are tilted at an angle of 3.9  (3)° because of the steric contacts between the H atoms at the 3-, 5-, 3'- and 5'-positions of the 4,4'-bipyridinium moiety. The phthalimide plane is tilted by 68.5  (1)° with respect to the pyridinium plane, directly attached to the propylene moiety.

Online 17 June 2003

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