title: Hydrothermal chemistry of oligomeric vanadium oxyfluorides.
abstract: Nine new vanadium oxyfluorides, containing ten different oligomeric vanadium (oxy)fluoride anions have been prepared by solvothermal synthesis in water-ethylene glycol and using organic cations as co-crystallising agents. Crystal structures are reported for each. Amongst the ten structure types, five represent previously unobserved moieties, including one monomeric unit (cis-[VOF4(H2O)]2-), two dimers ([V2O2F6(H2O)2]2- and [V2O2F8]4-) and two tetramers (both isomers of composition [V4O4F14]6-). Structural relationships between the various units are discussed, together with some rationalisation of their occurrence as a function of synthetic variables.
authors.affiliation: EaStChem, School of Chemistry, University of St Andrews, St Andrews, Fife, UK KY16 9ST.
authors.forename: David W
authors.initials: DW
authors.lastname: Aldous
authors.forename: Nicholas F
authors.initials: NF
authors.lastname: Stephens
authors.forename: Philip
authors.initials: P
authors.lastname: Lightfoot