Selenium (Monoclinic)
allotrope
Se
A rare monoclinic form of the trace-element selenium
← Allotrope of Selenium
A crystalline allotrope of Selenium (space group P 1 21/n 1), sourced from the Crystallography Open Database (COD 4319949).
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Crystallography
| Catalogue identity | Selenium — P 1 21/n 1 - P 1 21/n 1 |
| Formula | Se |
| Crystal system | monoclinic |
| Space group | P 1 21/n 1 |
| Lattice (a, b, c) Å | 8.894, 9, 11.383 |
| Angles (α, β, γ) ° | 90, 90.68, 90 |
| Density (g/cm³) | 4.605 |
| Determination | Experimental (measured) |
Structure data: Crystallography Open Database · Public domain (CC0)







