title: 5,7,7,12,14,14-Hexamethyl-4,11-diaza-1,8-diazo-niacyclo-tetra-decane bis-(perchlorate) monohydrate.
abstract: In the title hydrated salt, C(16)H(38)N(4) (2+)·2ClO(4) (-)·H(2)O, the dication is protonated at the diagonally opposite N atoms proximate to the -C(CH(3))(2)- groups. Within the cavity, there are two ammonium-amine N-H⋯N hydrogen bonds. Supra-molecular layers are formed in the crystal packing whereby the water mol-ecule links two perchlorate anions, and the resultant aggregates are connected to the dications via N-H⋯O hydrogen bonds. Layers, with an undulating topology, stack along the a axis being connected by C-H⋯O inter-actions.
authors.forename: Saroj K S
authors.initials: SK
authors.lastname: Hazari
authors.forename: Tapashi G
authors.initials: TG
authors.lastname: Roy
authors.forename: Babul Chandra
authors.initials: BC
authors.lastname: Nath
authors.forename: Prashun G
authors.initials: PG
authors.lastname: Roy
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng
authors.forename: Edward R T
authors.initials: ER
authors.lastname: Tiekink