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

Abstract

The two iodide salts, 4-[(benzylamino)carbonyl]-1-methylpyridinium iodide–iodine (2/1), C14H15N2O+·I−·0.5I2, I, and 4-[(benzylamino)carbonyl]-1-methylpyridinium triiodide, C14H15N2O+·I3−, II, with different cation:iodine atoms ratios were studied. Salt I contains one cation, one iodide anion and half of the neutral I2 molecule in the asymmetric unit (cation:iodine atoms ratio is 1:2). Salt II contains two cations, one triiodide anion (I3−) 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.

Keywords

• 4-[(benzylamino)carbonyl]-1-methylpyridinium
• molecular structure
• crystal structure
• hirshfeld analysis