Symmetry Lab › C2h › trans-1,2-Dichloroethene
C₂H₂Cl₂ (trans) trans-1,2-Dichloroethene
Planar, trans · point group C2h · order 4
- Point group
- C2h — A C2 rotation axis and a horizontal mirror plane perpendicular to it, which together give a centre of inversion.
- Order
- 4
- Operations
- E, C₂, i, σh
- Shape
- Planar, trans
- Atoms
- 6 (C × 2, Cl × 2, H × 2)
Symmetry elements of C₂H₂Cl₂ (trans)
- C₂ — perpendicular to the molecular plane, through the midpoint of C=C
- i — centre of inversion
- σh — the plane of the molecule
Structure
- C=C 1.34 Å, C–Cl 1.72 Å
- Cl–C=C 123°
- Cl on opposite sides; no dipole moment
