Symmetry Lab › D2h › p-Dichlorobenzene
C₆H₄Cl₂ (para) p-Dichlorobenzene
Planar · point group D2h · order 8
- Point group
- D2h — A C2 principal axis, 2 perpendicular C2 axes and a horizontal mirror plane; these also give 2 vertical planes and a centre of inversion.
- Order
- 8
- Operations
- E, C₂(z), C₂(y), C₂(x), i, σ(xy), σ(xz), σ(yz)
- Shape
- Planar
- Atoms
- 12 (C × 6, Cl × 2, H × 4)
Symmetry elements of C₆H₄Cl₂ (para)
- C₂ (z) — in the molecular plane
- C₂ (y) — perpendicular to the molecular plane
- C₂ (x) — in the molecular plane
- i — centre of inversion
- σ (xy) — perpendicular to the molecule
- σ (xz) — the plane of the molecule
- σ (yz) — perpendicular to the molecule
Structure
- C–Cl 1.74 Å
- Cl atoms para to each other
- No dipole moment; the mothball compound
