Rb2WO4
rubidium tungstate
Rubidium tungstate is a stable, insulating inorganic compound used primarily in advanced materials research and solid-state chemistry studies.
About rubidium tungstate
Rubidium tungstate is a stable inorganic compound characterized by its insulating electronic nature. As a member of the tungstate family, it maintains a robust structural configuration that sits firmly on the thermodynamic convex hull, indicating high stability under standard conditions. Its well-documented structural diversity across multiple databases highlights its significance in solid-state chemistry research. This material is primarily utilized in specialized laboratory settings where its insulating properties and chemical stability are required for fundamental studies into complex oxide systems. It serves as a precursor or model system for investigating the behavior of heavy alkali metal tungstates in various high-temperature or catalytic environments.
Key Properties
Cross-validated computational properties for rubidium 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 Rb2WO4, 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 | 4.51 | 0.0000 | -7.207 | 4.85 |
| R-3m (No. 166) | trigonal | 0.00 | 0.3215 | -7.562 | 6.16 |
| C2/m (No. 12) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.79 |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.52 |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.60 |
Applications
Where rubidium tungstate is used.
Frequently Asked Questions
Common questions about rubidium tungstate, answered from cross-validated data.
What is Rb2WO4?
Rubidium tungstate is a stable, insulating inorganic compound used primarily in advanced materials research and solid-state chemistry studies.
What is Rb2WO4 used for?
What is the band gap of Rb2WO4?
Is Rb2WO4 a metal, semiconductor, or insulator?
Is Rb2WO4 thermodynamically stable?
What is the crystal structure of Rb2WO4?
What is the density of Rb2WO4?
How many polymorphs of Rb2WO4 are known?
What elements does Rb2WO4 contain?
Where does the data for Rb2WO4 come from?
How It Compares
As a standalone representative of its class in this context, rubidium tungstate serves as a benchmark for understanding the structural and electronic behavior of alkali metal-based tungstates. Its position on the convex hull makes it a reliable reference point for comparing the stability and synthesis pathways of related transition metal oxides.
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.
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