Carbon (Pnnm polymorph)
An orthorhombic carbon structure related to compressed graphite
← Allotrope of Carbon
A crystalline allotrope of Carbon (space group P n n m), sourced from the Crystallography Open Database (COD 1531302).
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Crystallography
| Catalogue identity | Carbon — P n n m - P n n m |
| Formula | C |
| Crystal system | orthorhombic |
| Space group | P n n m |
| Lattice (a, b, c) Å | 14.745, 9.843, 9.092 |
| Angles (α, β, γ) ° | 90, 90, 90 |
| Density (g/cm³) | 2.182033170475266 |
| Determination | Experimental (measured) |
Structure data: Crystallography Open Database · Public domain (CC0)
Allotropes
Carbon — C c m m
Carbon — C m m a
Carbon — C m m m
Carbon — F d -3 m
Carbon — F m -3
Carbon — F m m m
Carbon — I -4 3 d
Carbon — I a -3
Carbon — I m -3
Carbon — I m m m
Carbon — P 42/m m c
Carbon — P 63 m c
Carbon — P 64 2 2
Carbon — P 6/m m m
Carbon — P a -3
Carbon — P b a n :1
Carbon — P c c a
Carbon — R -3 m :H
Carbon — R -3 m :R
Diamond
Graphite