RbSbO2
RbSbO2 is a stable, semiconducting ternary oxide composed of rubidium, antimony, and oxygen.
About RbSbO2
RbSbO2 is a ternary oxide that occupies a stable position on the thermodynamic convex hull, indicating significant structural integrity. As a semiconducting material, it offers a unique electronic profile that distinguishes it from more common insulating or metallic oxides. Its composition, involving rubidium and antimony, places it in a specialized category of complex oxides that are subject to ongoing structural investigation. Researchers utilize these materials to probe the interplay between heavy alkali metals and pnictogen-based anionic frameworks. Given its confirmed stability, RbSbO2 serves as a reliable candidate for experimental synthesis and characterization within the broader landscape of solid-state chemistry. It is particularly relevant for studies focusing on the electronic behavior of ternary systems where structural diversity is observed across multiple databases.
Key Properties
Cross-validated computational properties for RbSbO2, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of RbSbO2. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for RbSbO2, 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/c (No. 15) | monoclinic | 2.25 | 0.0000 | -5.616 | 4.73 |
| C2/c (No. 15) | monoclinic | 2.17 | 0.0000 | -1.663 | — |
| — | — | 2.26 | 0.0022 | -1.726 | — |
| — | — | 2.85 | 0.0118 | -1.716 | — |
| — | — | 2.87 | 0.0223 | -1.706 | — |
| — | — | 2.41 | 0.0228 | -1.705 | — |
| C2/c (No. 15) | monoclinic | — | — | — | 4.52 |
| C2/c (No. 15) | monoclinic | — | — | — | 4.41 |
| C2/c (No. 15) | monoclinic | — | — | — | 4.68 |
Applications
Where RbSbO2 is used.
Frequently Asked Questions
Common questions about RbSbO2, answered from cross-validated data.
What is RbSbO2?
RbSbO2 is a stable, semiconducting ternary oxide composed of rubidium, antimony, and oxygen.
What is RbSbO2 used for?
What is the band gap of RbSbO2?
Is RbSbO2 a metal, semiconductor, or insulator?
Is RbSbO2 thermodynamically stable?
What is the crystal structure of RbSbO2?
What is the density of RbSbO2?
How many polymorphs of RbSbO2 are known?
What elements does RbSbO2 contain?
Where does the data for RbSbO2 come from?
How It Compares
As a thermodynamically stable semiconducting compound, RbSbO2 represents a distinct point in the chemical space of rubidium-antimony-oxygen systems. While it lacks direct structural analogs in this specific classification, its existence on the convex hull highlights its role as a foundational material for understanding the stability limits of complex ternary oxides.
Data sources & attribution
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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