The dimeric [V2O4F6]4- vanadium oxide-fluoride anion in Na2(M(H2O)2)(V 2O4F6) (M= Co2+, Ni2+, and Cu2+)

Martin D. Donakowski*, Anastasiya I. Vinokur, Kenneth R. Poeppelmeier

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Three new vanadium oxide-fluoride phases, Na2(M(H 2O)2)(V2O4F6) (M= Co 2+, Ni2+, and Cu2+), were prepared by hydrothermal techniques in hydrofluoric acid. The compounds contain the dioxo vanadium fluoride dimeric anion: [V2O4F6] 4-. The harder (Na+) and softer (M = Co2+, Ni2+, and Cu2+) cations coordinate to the harder fluoride and softer oxide anions, respectively. In contrast to monoxo vanadium fluorides, the dioxo vanadium fluoride exhibits an increased nucleophilicity of the oxide anions. This increased nucleophilicity allows the anion to bond covalently with late transition metals to form 2D layers that contain both an early transition metal (V5+) and a late transition metal (Co2+, Ni 2+, or Cu2+).

Original languageEnglish (US)
Pages (from-to)1991-1995
Number of pages5
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Issue number12-13
StatePublished - Oct 2012


  • Crystal structures
  • Dioxo vanadium fluoride anion
  • Hydrothermal synthesis
  • Oxide-fluorides
  • Vanadates

ASJC Scopus subject areas

  • Inorganic Chemistry


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