Symmetry Lab › D5h › Pentafluoroxenate(IV) ion
XeF₅⁻ Pentafluoroxenate(IV) ion
Pentagonal planar · point group D5h · order 20
- Point group
- D5h — A C5 principal axis, 5 perpendicular C2 axes and a horizontal mirror plane; these also give 5 vertical planes.
- Order
- 20
- Operations
- E, 2C₅, 2C₅², 5C₂, σh, 2S₅, 2S₅³, 5σᵥ
- Shape
- Pentagonal planar
- Atoms
- 6 (Xe, F × 5)
Symmetry elements of XeF₅⁻
- C₅ — perpendicular to the plane
- C₂ (1) — along one Xe–F bond
- C₂ (2) — along one Xe–F bond
- C₂ (3) — along one Xe–F bond
- C₂ (4) — along one Xe–F bond
- C₂ (5) — along one Xe–F bond
- σh — the plane of the ion
- σᵥ (1) — contains the C₅ axis and one Xe–F bond
- σᵥ (2) — contains the C₅ axis and one Xe–F bond
- σᵥ (3) — contains the C₅ axis and one Xe–F bond
- σᵥ (4) — contains the C₅ axis and one Xe–F bond
- σᵥ (5) — contains the C₅ axis and one Xe–F bond
- S₅ — rotate 72°, then reflect in σh
Structure
- Xe–F 2.02 Å
- F–Xe–F 72°
- Two lone pairs on Xe, above and below the plane (AX₅E₂)
