Crystal structure, Hirshfeld surface analysis and energy framework calculation of the first oxoanion salt containing 1,3-cyclohexanebis(methylammonium): [3-(azaniumylmethyl)cyclohexyl]-methanaminium dinitrate.

The title salt, C8H20N22+·2NO3-, was obtained by a reaction between 1,3-cyclohexanebis(methylamine) and nitric acid. The cyclohexane ring of the organic cation is in a chair conformation with the methylammonium substituents in the equatorial positions and the two terminal ammonium groups in a trans conformation. In the crystal, mixed cation-anion layers lying parallel to the (010) plane are formed through N-H...O hydrogen-bonding interactions; these layers are formed by infinite undulating chains running parallel to the [001] direction. The overall intermolecular interactions involved in the structure were quantified and fully described by Hirshfeld surface analysis. In addition, energy-framework calculations were used to analyse and visualize the threedimensional topology of the crystal packing. The electrostatic energy framework is dominant over the dispersion energy framework. [ABSTRACT FROM AUTHOR]