Silver(I) Tetrafluoridooxidovanadate(V) – Ag[VOF₄]

Abstract

Silver(I) tetrafluoridooxidovanadate(V) with a polymeric chain anion, [VOF₄]_nⁿ⁻ has been prepared in reaction between AgNO₃ and VOF₃ in anhydrous HF solution, and characterised by single-crystal X-ray diffraction and Raman spectroscopy. Pale yellow crystals of Ag[VOF₄] crystallise in a monoclinic P2₁/c space group with a = 5.5452(4) Å, b = 5.0071(3) Å, c = 13.6511(11) Å, b = 100.543(3)°, V = 372.63(5) ų, and Z = 4. Raman spectrum is dominated by the anion V=O stretch band at 1008 cm⁻¹. Solid-state conformational isomerism exists between [VOF₄]⁻ anions in crystal structures of the reported Ag[VOF₄] and previously published and structurally characterised isoformulaic K[VOF₄] and Cs[VOF₄].