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Symmetry Lab4AB · ABC Chemistry

Symmetry Lab › C∞v › Chloroacetylene

HC≡CCl Chloroacetylene

Linear · point group C∞v · order ∞

Open HC≡CCl in 3D →

Point group
C∞v — A linear molecule without a centre of inversion: a C∞ axis along the bonds and an infinite number of mirror planes containing it.
Order
∞
Operations
E, 2C∞, ∞σᵥ
Shape
Linear
Atoms
4 (H, C × 2, Cl)

Symmetry elements of HC≡CCl

  • C∞ — the molecular axis: any rotation leaves the molecule unchanged
  • σᵥ (one of ∞) — any plane containing the axis
  • σᵥ (another) — any plane containing the axis

Structure

  • C≡C 1.20 Å, C–Cl 1.64 Å
  • All angles 180°
  • Two different ends: no inversion centre
Chloroacetylene (HCCCl) — C∞v symmetry elements
Chloroacetylene: symmetry elements of the C∞v point group

Other C∞v molecules

COCarbon monoxideCN⁻Cyanide ionHBrHydrogen bromideHClHydrogen chlorideHFHydrogen fluorideIClIodine monochlorideNONitric oxideOCSCarbonyl sulfideClCNCyanogen chlorideHCNHydrogen cyanideN₂ONitrous oxideNCS⁻Thiocyanate ion

Open in the 3D lab →  ·  All C∞v molecules  ·  All point groups