Salts of 4-[(benzyl-amino)-carbon-yl]-1-methyl-pyridinium and iodide anions with different cation:iodine stoichiometric ratios.

The two iodide salts, 4-[(benzyl-amino)-carbon-yl]-1-methyl-pyridinium iodide-iodine (2/1), C(14)H(15)N(2)O(+)·I(-)·0.5I(2), I, and 4-[(benzyl-amino)-carbon-yl]-1-methyl-pyridinium 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) mol-ecule 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.