Symmetry Lab › Point groups › C2
C2 point group
One C2 rotation axis and no mirror plane or centre of inversion. Molecules in this group are chiral.
- Family
- Cyclic (Cₙ)
- Order
- 2
- Operations
- E, C₂
- Molecules in the lab
- 4
C2 molecules
| Molecule | Shape | Atoms | 3D model |
|---|---|---|---|
| H₂S₂Hydrogen disulfide | Open book (skew), like H₂O₂ | 4 | Open in 3D → |
| H₂O₂Hydrogen peroxide | Open book (skew) | 4 | Open in 3D → |
| N₂H₄Hydrazine (gauche) | Gauche | 6 | Open in 3D → |
| ClCH₂CH₂Cl (gauche)1,2-Dichloroethane, gauche | Staggered, Cl–C–C–Cl 60° | 8 | Open in 3D → |