Salts of 4-[(benzyl­amino)­carbon­yl]-1-methyl­pyridinium and iodide anions with different cation:iodine stoichiometric ratios

The two iodide salts, 4-[(benzyl­amino)­carbon­yl]-1-methyl­pyridinium iodide–iodine (2/1), C(14)H(15)N(2)O(+)·I(−)·0.5I(2), I, and 4-[(benzyl­amino)­carbon­yl]-1-methyl­pyridinium triiodide, C(14)H(15)N(2)O(+)·I(3) (−), II, with different cation:iodine atoms ratios were studied. Salt I contains one cation, one iodide anion and half of the neutral I(2) mol­ecule in the asymmetric unit (cation:iodine atoms ratio is 1:2). Salt II contains two cations, one triiodide anion (I (3) (−)) and two half triiodide anions (cation:iodine atoms ratio is 1:3). The NH group forms N—H⋯I hydrogen bonds with the I(−) anion in the crystal of I or N—H⋯O hydrogen bonds in II where only triiodide anions are present.