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Symmetry Lab › D_∞h › Magnesium chloride (gas-phase molecule)

MgCl₂ Magnesium chloride (gas-phase molecule)

Linear · point group D_∞h · order ∞

Open MgCl₂ in 3D →

Point group: D_∞h — A linear molecule with a centre of inversion: the C_∞ axis, the planes containing it, a perpendicular mirror plane and an infinite number of perpendicular C₂ axes.
Order: ∞
Operations: E, 2C∞, ∞σᵥ, i, 2S∞, ∞C₂
Shape: Linear
Atoms: 3 (Mg, Cl × 2)

Symmetry elements of MgCl₂

C∞ — the molecular axis: any rotation leaves the molecule unchanged
i — centre of inversion
σh — perpendicular to the axis, through Mg
C₂ (one of ∞) — any line through Mg perpendicular to the axis
C₂ (another) — any line through Mg perpendicular to the axis
σᵥ (one of ∞) — any plane containing the axis
σᵥ (another) — any plane containing the axis

Structure

Mg–Cl 2.18 Å
Cl–Mg–Cl 180°
No lone pair on Mg

Magnesium chloride (gas-phase molecule) (MgCl2) — D∞h symmetry elements — Magnesium chloride (gas-phase molecule): symmetry elements of the D_∞h point group

Other D_∞h molecules

Br₂Dibromine Cl₂Dichlorine N₂Dinitrogen O₂Dioxygen N₃⁻Azide ion BeCl₂Beryllium chloride (gas-phase molecule)CO₂Carbon dioxide CS₂Carbon disulfide HgCl₂Mercury(II) chloride I₃⁻Triiodide ion XeF₂Xenon difluoride C₂H₂Acetylene (ethyne)

Open in the 3D lab → · All D_∞h molecules · All point groups