Boron (α-rhombohedral)
allotrope
B
The simplest and most studied crystal form of elemental boron
← Allotrope of Boron
Alpha-rhombohedral boron arranges its atoms into elegant 12-atom cage clusters called icosahedra.
A crystalline allotrope of Boron (space group R -3 m :H), sourced from the Crystallography Open Database (COD 9008561).
Material
Gallery canvas set in a solid wood floating frame.
Frame
Brown
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Crystallography
| Catalogue identity | Boron — R-3m:H |
| Formula | B |
| Crystal system | trigonal |
| Space group | R -3 m :H |
| Lattice (a, b, c) Å | 4.908, 4.908, 12.567 |
| Angles (α, β, γ) ° | 90, 90, 120 |
| Density (g/cm³) | 2.465 |
Structure data: Crystallography Open Database · Public domain (CC0)