[B₁₂H₁₂]²⁻ closo-Dodecaborate ion

Symmetry elements of [B₁₂H₁₂]²⁻

• C₅ (1) — through the centres of two opposite pentagons; also an S₁₀ axis
• C₅ (2) — through the centres of two opposite pentagons; also an S₁₀ axis
• C₅ (3) — through the centres of two opposite pentagons; also an S₁₀ axis
• C₅ (4) — through the centres of two opposite pentagons; also an S₁₀ axis
• C₅ (5) — through the centres of two opposite pentagons; also an S₁₀ axis
• C₅ (6) — through the centres of two opposite pentagons; also an S₁₀ axis
• C₃ (1) — through the centres of two opposite hexagons / three-fold vertices; also an S₆ axis
• C₃ (2) — through the centres of two opposite hexagons / three-fold vertices; also an S₆ axis
• C₃ (3) — through the centres of two opposite hexagons / three-fold vertices; also an S₆ axis
• C₃ (4) — through the centres of two opposite hexagons / three-fold vertices; also an S₆ axis
• C₃ (5) — through the centres of two opposite hexagons / three-fold vertices; also an S₆ axis
• C₃ (6) — through the centres of two opposite hexagons / three-fold vertices; also an S₆ axis
• C₃ (7) — through the centres of two opposite hexagons / three-fold vertices; also an S₆ axis
• C₃ (8) — through the centres of two opposite hexagons / three-fold vertices; also an S₆ axis
• C₃ (9) — through the centres of two opposite hexagons / three-fold vertices; also an S₆ axis
• C₃ (10) — through the centres of two opposite hexagons / three-fold vertices; also an S₆ axis
• C₂ (1) — through the midpoints of two opposite edges
• C₂ (2) — through the midpoints of two opposite edges
• C₂ (3) — through the midpoints of two opposite edges
• C₂ (4) — through the midpoints of two opposite edges
• C₂ (5) — through the midpoints of two opposite edges
• C₂ (6) — through the midpoints of two opposite edges
• C₂ (7) — through the midpoints of two opposite edges
• C₂ (8) — through the midpoints of two opposite edges
• C₂ (9) — through the midpoints of two opposite edges
• C₂ (10) — through the midpoints of two opposite edges
• C₂ (11) — through the midpoints of two opposite edges
• C₂ (12) — through the midpoints of two opposite edges
• C₂ (13) — through the midpoints of two opposite edges
• C₂ (14) — through the midpoints of two opposite edges
• C₂ (15) — through the midpoints of two opposite edges
• i — centre of inversion
• σ (1) — one of the fifteen mirror planes
• σ (2) — one of the fifteen mirror planes
• σ (3) — one of the fifteen mirror planes
• σ (4) — one of the fifteen mirror planes
• σ (5) — one of the fifteen mirror planes
• σ (6) — one of the fifteen mirror planes
• σ (7) — one of the fifteen mirror planes
• σ (8) — one of the fifteen mirror planes
• σ (9) — one of the fifteen mirror planes
• σ (10) — one of the fifteen mirror planes
• σ (11) — one of the fifteen mirror planes
• σ (12) — one of the fifteen mirror planes
• σ (13) — one of the fifteen mirror planes
• σ (14) — one of the fifteen mirror planes
• σ (15) — one of the fifteen mirror planes
• S₁₀ (1) — rotate 36°, then reflect
• S₁₀ (2) — rotate 36°, then reflect
• S₁₀ (3) — rotate 36°, then reflect
• S₁₀ (4) — rotate 36°, then reflect
• S₁₀ (5) — rotate 36°, then reflect
• S₁₀ (6) — rotate 36°, then reflect
• S₆ (1) — rotate 60°, then reflect
• S₆ (2) — rotate 60°, then reflect
• S₆ (3) — rotate 60°, then reflect
• S₆ (4) — rotate 60°, then reflect
• S₆ (5) — rotate 60°, then reflect
• S₆ (6) — rotate 60°, then reflect
• S₆ (7) — rotate 60°, then reflect
• S₆ (8) — rotate 60°, then reflect
• S₆ (9) — rotate 60°, then reflect
• S₆ (10) — rotate 60°, then reflect

Structure

• B–B 1.78 Å, B–H 1.18 Å
• Twelve borons on the vertices of an icosahedron
• Extraordinarily stable; the parent of the carboranes

Other I_h molecules

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