Br2Cs2O8
Br2Cs2O8 is a metastable, insulating inorganic compound containing cesium, bromine, and oxygen.
About Br2Cs2O8
Br2Cs2O8 is a complex inorganic compound composed of bromine, cesium, and oxygen. As a wide-band-gap insulator, it possesses electronic properties characteristic of materials that do not readily conduct electricity under standard conditions.
This compound is classified as metastable, indicating that it exists in a state that is not the absolute lowest energy configuration. Its structural diversity is highlighted by its presence in multiple crystallographic databases, reflecting ongoing interest in its specific atomic arrangement.
Key Properties
Cross-validated computational properties for Br2Cs2O8, 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 Br2Cs2O8, 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. |
|---|---|---|---|---|---|
| I41/amd (No. 141) | tetragonal | 3.05 | 0.0268 | -4.578 | 3.52 |
| I41/amd (No. 141) | — | — | — | — | — |
| — | — | — | — | — | 3.98 |
Frequently Asked Questions
Common questions about Br2Cs2O8, answered from cross-validated data.
What is Br2Cs2O8?
Br2Cs2O8 is a metastable, insulating inorganic compound containing cesium, bromine, and oxygen.
What is the band gap of Br2Cs2O8?
Is Br2Cs2O8 a metal, semiconductor, or insulator?
Is Br2Cs2O8 thermodynamically stable?
What is the crystal structure of Br2Cs2O8?
What is the density of Br2Cs2O8?
How many polymorphs of Br2Cs2O8 are known?
What elements does Br2Cs2O8 contain?
Where does the data for Br2Cs2O8 come from?
How It Compares
As a unique inorganic compound, Br2Cs2O8 occupies a specialized niche in materials science. Without direct structural siblings for comparison, it serves as a distinct example of how cesium and bromine can organize within an oxygen-rich framework to form metastable phases.
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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