Symmetry Lab › Td › Adamantane
C₁₀H₁₆ Adamantane
Three fused chairs (diamond fragment) · point group Td · order 24
- Point group
- Td — The full symmetry of a regular tetrahedron: four C3 axes, three C2 axes (each also an S4 axis) and six dihedral mirror planes. There is no centre of inversion.
- Order
- 24
- Operations
- E, 8C₃, 3C₂, 6S₄, 6σd
- Shape
- Three fused chairs (diamond fragment)
- Atoms
- 26 (C × 10, H × 16)
Symmetry elements of C₁₀H₁₆
- C₃ (1) — through one CH carbon
- C₃ (2) — through one CH carbon
- C₃ (3) — through one CH carbon
- C₃ (4) — through one CH carbon
- C₂ (x) — through two opposite CH₂ carbons
- C₂ (y) — through two opposite CH₂ carbons
- C₂ (z) — through two opposite CH₂ carbons
- S₄ (x) — rotate 90°, then reflect
- S₄ (y) — rotate 90°, then reflect
- S₄ (z) — rotate 90°, then reflect
- σd (1) — contains two CH carbons and two CH₂ carbons
- σd (2) — contains two CH carbons and two CH₂ carbons
- σd (3) — contains two CH carbons and two CH₂ carbons
- σd (4) — contains two CH carbons and two CH₂ carbons
- σd (5) — contains two CH carbons and two CH₂ carbons
- σd (6) — contains two CH carbons and two CH₂ carbons
Structure
- C–C 1.54 Å, C–H 1.10 Å
- All C–C–C ≈ 109.5°
- Four CH and six CH₂ carbons
