Crystal structure of 3,14-dimethyl-2,6,13,17-tetra­azoniatri­cyclo­[16.4.0.0(7,12)]docosane tetra­chloride tetra­hydrate from synchrotron X-ray data

The crystal structure of the title salt, C(20)H(44)N(4) (4+)·4Cl(−)·4H(2)O, has been determined using synchrotron radiation at 220 K. The structure determination reveals that protonation has occurred at all four amine N atoms. The asymmetric unit contains one half-cation (completed by crystallographic inversion symmetry), two chloride anions and two water mol­ecules. There are two mol­ecules in the unit cell. The Cl(−) anions and hydrate mol­ecules are involved in hydrogen bonding. The crystal structure is stabilized by inter­molecular hydrogen bonds involving the macrocycle N—H groups and water O—H groups as donors and the O atoms of the water mol­ecules and the Cl(−) anions as acceptors, giving rise to a three-dimensional network.