Symmetry Lab › Point groups › D2h
D2h point group
A C2 principal axis, 2 perpendicular C2 axes and a horizontal mirror plane; these also give 2 vertical planes and a centre of inversion.
- Family
- Prismatic (Dₙₕ)
- Order
- 8
- Operations
- E, C₂(z), C₂(y), C₂(x), i, σ(xy), σ(xz), σ(yz)
- Molecules in the lab
- 15
D2h molecules
| Molecule | Shape | Atoms | 3D model |
|---|---|---|---|
| trans-[PtCl₂(NH₃)₂]trans-Platin (N atoms shown) | Square planar | 5 | Open in 3D → |
| N₂O₄Dinitrogen tetroxide | Planar | 6 | Open in 3D → |
| C₂H₄Ethylene (ethene) | Planar | 6 | Open in 3D → |
| C₂O₄²⁻Oxalate ion | Planar | 6 | Open in 3D → |
| C₂F₄Tetrafluoroethylene | Planar | 6 | Open in 3D → |
| C₂H₂N₄1,2,4,5-Tetrazine | Planar six-membered ring | 8 | Open in 3D → |
| Al₂Cl₆Aluminium chloride dimer | Bridged dimer, two perpendicular planes | 8 | Open in 3D → |
| B₂H₆Diborane | Two BH₂ groups bridged by two H | 8 | Open in 3D → |
| I₂Cl₆Iodine trichloride dimer | Planar bridged dimer | 8 | Open in 3D → |
| C₄H₄N₂Pyrazine | Planar six-membered ring | 10 | Open in 3D → |
| C₆H₄O₂p-Benzoquinone | Planar | 12 | Open in 3D → |
| C₆H₄Br₂ (para)p-Dibromobenzene | Planar | 12 | Open in 3D → |
| C₆H₄Cl₂ (para)p-Dichlorobenzene | Planar | 12 | Open in 3D → |
| C₁₀H₈Naphthalene | Two fused planar rings | 18 | Open in 3D → |
| C₁₄H₁₀Anthracene | Three fused rings in a row, planar | 24 | Open in 3D → |