Symmetry Lab › D3h › Ethane, eclipsed
C₂H₆ (eclipsed) Ethane, eclipsed
Eclipsed · point group D3h · order 12
- Point group
- D3h — A C3 principal axis, 3 perpendicular C2 axes and a horizontal mirror plane; these also give 3 vertical planes.
- Order
- 12
- Operations
- E, 2C₃, 3C₂, σh, 2S₃, 3σᵥ
- Shape
- Eclipsed
- Atoms
- 8 (C × 2, H × 6)
Symmetry elements of C₂H₆ (eclipsed)
- C₃ — along the C–C bond
- C₂ (1) — perpendicular to the C–C bond, through its midpoint
- C₂ (2) — perpendicular to the C–C bond, through its midpoint
- C₂ (3) — perpendicular to the C–C bond, through its midpoint
- σh — perpendicular to the C–C bond, through its midpoint
- S₃ — rotate 120°, then reflect in σh
- σᵥ (1) — contains the C–C bond and two eclipsed H atoms
- σᵥ (2) — contains the C–C bond and two eclipsed H atoms
- σᵥ (3) — contains the C–C bond and two eclipsed H atoms
Structure
- C–C 1.535 Å, C–H 1.094 Å
- Dihedral 0°
- About 12 kJ/mol above staggered
