title: Synthesis and structure of fluoride-containing GeO2 analogues of zeolite double four-ring building units.
abstract: Double four-membered ring (D4R) anionic building units [Ge8O12(OH)8F]- have been synthesised hydrothermally and their structures solved from powder X-ray diffraction.
authors.affiliation: School of Chemistry, Purdie Building, St Andrews, UK KY16 9ST.
authors.forename: Luis A
authors.initials: LA
authors.lastname: Villaescusa
authors.forename: Philip
authors.initials: P
authors.lastname: Lightfoot
authors.forename: Russell E
authors.initials: RE
authors.lastname: Morris