5,7,7,12,14,14-Hexamethyl-4,11-diaza-1,8-diazoniacyclotetradeca-4,11-diene bis(methanesulfonate)

Abstract

In the title molecular salt, C16H34N42+·2CH3SO3−, the centrosymmetric macrocyclic molecule has all four N atoms oriented towards the inside of the cavity, similar to its conformation in metal complexes. The conformation of the ethylenediamine fragment is trans–gauche–trans and the conformation of the propylenediamine group is trans–cis–gauche–gauche. In the crystal, each protonated N atom makes a strong hydrogen bond with a sulfonate O atom and another intramolecular hydrogen bond connects two N atoms of the same macrocyclic ring to generate ensembles of one dication and two anions.

Keywords

• crystal structure
• macrocyclic tetraamine
• methanesulfonate