Rb2Be2O3
Rb2Be2O3 is a stable, wide-band-gap insulating compound containing rubidium, beryllium, and oxygen.
About Rb2Be2O3
Rb2Be2O3 is a thermodynamically stable inorganic compound composed of rubidium, beryllium, and oxygen. As a wide-band-gap insulator, it exhibits electronic properties characteristic of materials that do not readily conduct electricity under standard conditions. Its position on the convex hull confirms its inherent stability, making it a significant subject for structural analysis.
With multiple reported structures across major materials databases, this compound serves as a key reference point for researchers studying complex oxide systems. Its specific arrangement of beryllium and oxygen polyhedra within the rubidium lattice provides insights into the structural diversity possible within this chemical family.
Key Properties
Cross-validated computational properties for Rb2Be2O3, 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 Rb2Be2O3, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 2.46 | 0.0000 | -5.847 | 3.57 |
| P41212 (No. 92) | tetragonal | 3.63 | 0.0312 | -5.816 | 3.71 |
| P43212 (No. 96) | tetragonal | 3.91 | 0.0313 | -5.816 | 3.71 |
| P21/c (No. 14) | monoclinic | 3.11 | 0.0377 | -5.809 | 3.12 |
| P21/c (No. 14) | — | — | — | — | — |
| Pnma (No. 62) | Orthorhombic | — | — | — | 3.51 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 3.41 |
| P43212 (No. 96) | Tetragonal | — | — | — | 3.71 |
| P43212 (No. 96) | Tetragonal | — | — | — | 3.80 |
| P21/c (No. 14) | Monoclinic | — | — | — | 3.00 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 3.52 |
| P43212 (No. 96) | Tetragonal | — | — | — | 3.79 |
Frequently Asked Questions
Common questions about Rb2Be2O3, answered from cross-validated data.
What is Rb2Be2O3?
Rb2Be2O3 is a stable, wide-band-gap insulating compound containing rubidium, beryllium, and oxygen.
What is the band gap of Rb2Be2O3?
Is Rb2Be2O3 a metal, semiconductor, or insulator?
Is Rb2Be2O3 thermodynamically stable?
What is the crystal structure of Rb2Be2O3?
What is the density of Rb2Be2O3?
How many polymorphs of Rb2Be2O3 are known?
What elements does Rb2Be2O3 contain?
Where does the data for Rb2Be2O3 come from?
How It Compares
As a distinct member of the rubidium beryllium oxide system, Rb2Be2O3 represents a stable configuration that contributes to our broader understanding of how alkali metals interact with beryllium-oxygen frameworks. It serves as a foundational example of structural complexity in this class of insulating 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.
Analyze Rb2Be2O3 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →