title: Dabconium orthofluoroberyllate hemihydrate.
abstract: Alternating C(6)H(14)N(2)(2+) and [BeF(4)](2-) units within the ac plane of 1,4-diazoniabicyclo[2.2.2]octane tetrafluoroberyllium hemihydrate, (C(6)H(14)N(2))[BeF(4)] x 0.5H(2)O, combine to form double chains via hydrogen bonding. These double chains connect through bifurcated hydrogen bonds to water molecules, which lie on twofold axes, producing a two-dimensional sheet. Very weak hydrogen-bond interactions, along the b axis, join the sheets to produce a three-dimensional network.
authors.affiliation: Department of Chemistry, University of Southampton, Southampton, Hampshire SO17 1BJ, England. lag4@soton.ac.uk
authors.forename: Lee A
authors.initials: LA
authors.lastname: Gerrard
authors.forename: Mark T
authors.initials: MT
authors.lastname: Weller