File:Potassium-nitrate-superstructure-unit-cell-3D-sf.png
Summary
Space-filling model of the unit cell of the crystal structure of the α polymorph of potassium nitrate, KNO3, i.e. [K+][NO3−].
The compound was originally thought to adopt a simple, highly symmetric structure in space group Pmcn but has recently been found to crystallise in the lower symmetry space group Cmc21. This means there are three slightly different (crystallographically independent) environments for each potassium ion and for each nitrate ion.
The structure was reported in Acta Crystallogr. C (2003) 59, i139–i140 and is available as COD entry 2013633, CSD entry 1722034 and ICSD entry 281552.
Colour code:
- Potassium, K: purple
- Nitrogen, N: blue
- Oxygen, O: red
Model manipulated in Avogadro 1.2 and image generated in CCDC Mercury 3.8.
Copyright status:
public domain
Source:
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:13, 2 October 2023 | | 3,000 × 2,100 (1.96 MB) | Thales (talk | contribs) | Space-filling model of the unit cell of the crystal structure of the α polymorph of potassium nitrate, KNO<sub>3</sub>, i.e. [K<sup>+</sup>][NO<sub>3</sub><s... |
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