Key indicators: single-crystal X-ray study; T = 296 K; mean (C-C) = 0.008 Å; R factor = 0.022; wR factor = 0.046; data-to-parameter ratio = 31.4.The title compound, {(C 14 H 18 N 2 )[Pb 2 I 6 ]} n , consists of discrete 1,1 0 -dimethyl-4,4 0 -(ethane-1,2-diyl)dipyridinium cations and one-dimensional [Pb 2 I 6 ] n anions. The organic cation has an inversion center at the mid-point of the ethane C-C bond. In the anion, the Pb II atom is coordinated by six I atoms in a distorted octahedral geometry. The I atoms bridge the Pb II atoms into a polymeric chain running along [001]. These inorganic chains are separated by the isolated organic cations.
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