Cs2O8Re2
Cs2O8Re2 is a stable, wide-band-gap insulating compound composed of cesium, rhenium, and oxygen.
About Cs2O8Re2
Cs2O8Re2 is a complex inorganic compound characterized by its wide-band-gap insulating electronic nature. As a thermodynamically stable material residing on the convex hull, it represents a robust phase within its chemical system, offering significant interest for researchers investigating stable ternary oxides.
The compound is noted for its structural diversity, with multiple reported configurations across major materials databases. This structural richness makes it a compelling subject for studies focused on the fundamental properties of cesium-rhenium-oxygen systems and their potential for specialized electronic applications.
Key Properties
Cross-validated computational properties for Cs2O8Re2, 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 Cs2O8Re2, 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 | 4.26 | 0.0000 | -7.880 | 5.19 |
| I41/amd (No. 141) | tetragonal | 3.86 | 0.0102 | -7.870 | 4.95 |
| I41/amd (No. 141) | — | — | — | — | — |
| — | — | — | — | — | 4.51 |
Frequently Asked Questions
Common questions about Cs2O8Re2, answered from cross-validated data.
What is Cs2O8Re2?
Cs2O8Re2 is a stable, wide-band-gap insulating compound composed of cesium, rhenium, and oxygen.
What is the band gap of Cs2O8Re2?
Is Cs2O8Re2 a metal, semiconductor, or insulator?
Is Cs2O8Re2 thermodynamically stable?
What is the crystal structure of Cs2O8Re2?
What is the density of Cs2O8Re2?
How many polymorphs of Cs2O8Re2 are known?
What elements does Cs2O8Re2 contain?
Where does the data for Cs2O8Re2 come from?
How It Compares
As a thermodynamically stable phase, Cs2O8Re2 serves as a foundational reference point for understanding the energetic landscape of ternary cesium-rhenium oxides, providing a benchmark for stability in this chemical class.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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