K3NbO8
Potassium peroxoniobate · Potassium perniobate
Potassium peroxoniobate is an inorganic compound characterized by the presence of peroxide groups coordinated to the niobium center. It is primarily utilized in chemical research as a reagent for oxidation processes and as a precursor in the synthesis of specialized niobium-based materials.
Key Properties
Cross-validated computational properties for Potassium peroxoniobate, aggregated across 4 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Reported Structures
Lowest-energy structures reported for K3NbO8, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| I-42m (No. 121) | tetragonal | 2.35 | 0.0013 | -6.109 | 3.10 |
| I-42m (No. 121) | — | — | — | — | — |
| I-42m (No. 121) | Tetragonal | — | — | — | 2.91 |
| I-42m (No. 121) | Tetragonal | — | — | — | 3.02 |
| I-42m (No. 121) | Tetragonal | — | — | — | 2.96 |
| — | — | — | — | — | 2.91 |
Applications
Where Potassium peroxoniobate is used.
Frequently Asked Questions
Common questions about Potassium peroxoniobate, answered from cross-validated data.
What is K3NbO8?
Potassium peroxoniobate is an inorganic compound characterized by the presence of peroxide groups coordinated to the niobium center. It is primarily utilized in chemical research as a reagent for oxidation processes and as a precursor in the synthesis of specialized niobium-based materials.
What is K3NbO8 used for?
What is the band gap of K3NbO8?
Is K3NbO8 a metal, semiconductor, or insulator?
Is K3NbO8 thermodynamically stable?
What is the crystal structure of K3NbO8?
What is the density of K3NbO8?
How many polymorphs of K3NbO8 are known?
What elements does K3NbO8 contain?
Where does the data for K3NbO8 come from?
Related Compounds
Other Perovskite Oxides in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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