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Symmetry Lab4AB · ABC Chemistry

Symmetry Lab › C3v › Ammonia

NH₃ Ammonia

Trigonal pyramidal · point group C3v · order 6

Open NH₃ in 3D →

Point group
C3v — A C3 rotation axis and 3 vertical mirror planes that contain it.
Order
6
Operations
E, 2C₃, 3σᵥ
Shape
Trigonal pyramidal
Atoms
4 (N, H × 3)

Symmetry elements of NH₃

  • C₃ — through N, perpendicular to the H₃ plane
  • σᵥ (1) — contains the C₃ axis and one N–H bond
  • σᵥ (2) — contains the C₃ axis and one N–H bond
  • σᵥ (3) — contains the C₃ axis and one N–H bond

Structure

  • N–H 1.012 Å
  • H–N–H 106.7°
  • One lone pair on N
Ammonia (NH3) — C3v symmetry elements
Ammonia: symmetry elements of the C3v point group

Other C3v molecules

AsH₃ArsineBrO₃⁻Bromate ionClO₃⁻Chlorate ionIO₃⁻Iodate ionNCl₃Nitrogen trichlorideNF₃Nitrogen trifluoridePH₃PhosphinePCl₃Phosphorus trichloridePF₃Phosphorus trifluorideSO₃²⁻Sulfite ionXeO₃Xenon trioxideCH₃CCl₃1,1,1-Trichloroethane

Open in the 3D lab →  ·  All C3v molecules  ·  All point groups