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Symmetry Lab4AB · ABC Chemistry

Symmetry Lab › C3v › Ammonia borane

H₃N–BH₃ Ammonia borane

Staggered, like ethane but with a dative bond · point group C3v · order 6

Open H₃N–BH₃ in 3D →

Point group
C3v — A C3 rotation axis and 3 vertical mirror planes that contain it.
Order
6
Operations
E, 2C₃, 3σᵥ
Shape
Staggered, like ethane but with a dative bond
Atoms
8 (N, B, H × 6)

Symmetry elements of H₃N–BH₃

  • C₃ — along the B–N bond
  • σᵥ (1) — contains B–N, one N–H and one B–H
  • σᵥ (2) — contains B–N, one N–H and one B–H
  • σᵥ (3) — contains B–N, one N–H and one B–H

Structure

  • B–N 1.66 Å (dative), N–H 1.02 Å, B–H 1.21 Å
  • Staggered H₃N and BH₃
  • Isoelectronic with ethane, but only C3v: the two ends differ
Ammonia borane (H3N-BH3) — C3v symmetry elements
Ammonia borane: symmetry elements of the C3v point group

Other C3v molecules

NH₃AmmoniaAsH₃ArsineBrO₃⁻Bromate ionClO₃⁻Chlorate ionIO₃⁻Iodate ionNCl₃Nitrogen trichlorideNF₃Nitrogen trifluoridePH₃PhosphinePCl₃Phosphorus trichloridePF₃Phosphorus trifluorideSO₃²⁻Sulfite ionXeO₃Xenon trioxide

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