Symmetry Lab › C2h › Glyoxal, s-trans
C₂H₂O₂ (trans) Glyoxal, s-trans
Planar · 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
- Atoms
- 6 (C × 2, O × 2, H × 2)
Symmetry elements of C₂H₂O₂ (trans)
- C₂ — perpendicular to the plane, through the C–C midpoint
- i — centre of inversion
- σh — the plane of the molecule
Structure
- C–C 1.52 Å, C=O 1.21 Å
- O=C–C 121°
- The smallest dialdehyde
