Symmetry Lab › Point groups › Oh
Oh point group
The full symmetry of a regular octahedron or cube: three C4 axes, four C3 axes, six C2 axes, a centre of inversion and nine mirror planes.
- Family
- Octahedral (O, Oₕ)
- Order
- 48
- Operations
- E, 8C₃, 6C₂′, 6C₄, 3C₂, i, 6S₄, 8S₆, 3σh, 6σd
- Molecules in the lab
- 18
Oh molecules
| Molecule | Shape | Atoms | 3D model |
|---|---|---|---|
| [Co(NH₃)₆]³⁺ (N atoms shown)Hexaamminecobalt(III) ion | Octahedral | 7 | Open in 3D → |
| [Fe(H₂O)₆]³⁺ (O atoms shown)Hexaaquairon(III) ion | Octahedral | 7 | Open in 3D → |
| [PtCl₆]²⁻Hexachloroplatinate(IV) ion | Octahedral | 7 | Open in 3D → |
| [AlF₆]³⁻Hexafluoroaluminate ion | Octahedral | 7 | Open in 3D → |
| [SbF₆]⁻Hexafluoroantimonate ion | Octahedral | 7 | Open in 3D → |
| PF₆⁻Hexafluorophosphate ion | Octahedral | 7 | Open in 3D → |
| SiF₆²⁻Hexafluorosilicate ion | Octahedral | 7 | Open in 3D → |
| SeF₆Selenium hexafluoride | Octahedral | 7 | Open in 3D → |
| SF₆Sulfur hexafluoride | Octahedral | 7 | Open in 3D → |
| UF₆Uranium hexafluoride | Octahedral | 7 | Open in 3D → |
| [B₆H₆]²⁻closo-Hexahydridohexaborate ion | Octahedron of BH units | 12 | Open in 3D → |
| Cr(CO)₆Chromium hexacarbonyl | Octahedral | 13 | Open in 3D → |
| [Co(CN)₆]³⁻Hexacyanocobaltate(III) ion | Octahedral | 13 | Open in 3D → |
| [Fe(CN)₆]³⁻Hexacyanoferrate(III) ion | Octahedral | 13 | Open in 3D → |
| Mo(CO)₆Molybdenum hexacarbonyl | Octahedral | 13 | Open in 3D → |
| C₈H₈Cubane | Cube | 16 | Open in 3D → |
| [Mo₆Cl₈Cl₆]²⁻Octa-μ₃-chloro-hexachloro-hexamolybdate | Mo₆ octahedron inside a Cl₈ cube | 20 | Open in 3D → |
| Si₈O₁₂(CH₃)₈Octamethylsilsesquioxane, T₈ (methyl C shown) | Cube of Si with O on every edge | 28 | Open in 3D → |