K2WO4
Potassium tungstate · Dipotassium tungstate
Potassium tungstate is a crystalline inorganic compound that serves as a primary source of tungsten in various chemical processes. It is frequently utilized as a precursor for the synthesis of other tungsten-based materials and catalysts.
Key Properties
Cross-validated computational properties for Potassium tungstate, aggregated across 3 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 K2WO4, 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. |
|---|---|---|---|---|---|
| C2/m (No. 12) | monoclinic | 4.39 | 0.0000 | -7.258 | 4.22 |
| P21/c (No. 14) | monoclinic | 4.67 | 0.0173 | -7.241 | 3.98 |
| P21/c (No. 14) | Monoclinic | — | — | — | 3.78 |
| P21/c (No. 14) | Monoclinic | — | — | — | 4.12 |
| P21/c (No. 14) | Monoclinic | — | — | — | 3.87 |
| C2/m (No. 12) | Monoclinic | — | — | — | 3.95 |
| P21/c (No. 14) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.33 |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.05 |
Synthesis Routes
Literature-extracted synthesis procedures targeting K2WO4.
Applications
Where Potassium tungstate is used.
Frequently Asked Questions
Common questions about Potassium tungstate, answered from cross-validated data.
What is K2WO4?
Potassium tungstate is a crystalline inorganic compound that serves as a primary source of tungsten in various chemical processes. It is frequently utilized as a precursor for the synthesis of other tungsten-based materials and catalysts.
What is K2WO4 used for?
What is the band gap of K2WO4?
Is K2WO4 a metal, semiconductor, or insulator?
Is K2WO4 thermodynamically stable?
What is the crystal structure of K2WO4?
What is the density of K2WO4?
How many polymorphs of K2WO4 are known?
How is K2WO4 synthesized?
What elements does K2WO4 contain?
Where does the data for K2WO4 come from?
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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