title: A previously unrecognised hydronium di-cation in the crystal structure of a cucurbituril derivative.
abstract: Examination of the crystal structure of the adduct of hydronium tetrachloroferrate dichloride with cucurbituril resulted in the discovery that the hydronium cation present therein is not the well known H7O3+ species; rather, it is an unprecedented cyclic species of composition (H14O6)2+, templated by the formation of five hydrogen bonds to cucurbituril.
authors.affiliation: Department of Chemistry, University of Houston, Houston, TX 77204-5003, USA. ibernal@uh.edu
authors.forename: Ivan
authors.initials: I
authors.lastname: Bernal
authors.forename: Uday
authors.initials: U
authors.lastname: Mukhopadhyay
authors.forename: Alexander V
authors.initials: AV
authors.lastname: Virovets
authors.forename: Vladimir P
authors.initials: VP
authors.lastname: Fedin
authors.forename: William
authors.initials: W
authors.lastname: Clegg