4-[(Benzyl-amino)-carbon-yl]-1-methyl-pyridinium halogenide salts: X-ray diffraction study and Hirshfeld surface analysis.

Two salts of 4-[(benzyl-amino)-carbon-yl]-1-methyl-pyridinium (Am) with chloride (C14H15N2O+·Cl-) and bromide (C14H15N2O+·Br-) anions were studied and compared with the iodide salt. AmCl crystallizes in the centrosymmetric space group P21/n while AmBr and AmI form crystals in the Sohncke space group P212121. Crystals of AmBr are isostructural to those of AmI. The cation and anion are bound by an N-H⋯Hal hydrogen bond. Hirshfeld surface analysis was used to compare different types of inter-molecular inter-actions in the three structures under study. © Shishkina et al. 2022.