BrO2
Bromine dioxide · Bromine(IV) oxide
Bromine dioxide is an unstable inorganic compound that exists as a radical species. It is primarily studied in the context of atmospheric chemistry and chemical kinetics due to its role in the depletion of ozone.
Key Properties
Cross-validated computational properties for Bromine dioxide, aggregated across 4 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 BrO2, 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. |
|---|---|---|---|---|---|
| P21/c (No. 14) | monoclinic | 0.00 | 0.3711 | -3.639 | 2.97 |
| P-1 (No. 2) | Triclinic | — | — | — | 3.81 |
| P-1 (No. 2) | Triclinic | — | — | — | 5.01 |
| Pm (No. 6) | Monoclinic | — | — | — | 5.89 |
| P1 (No. 1) | Triclinic | — | — | — | 3.38 |
| P21 (No. 4) | Monoclinic | — | — | — | 4.74 |
| P-1 (No. 2) | Triclinic | — | — | — | 6.49 |
| P-1 (No. 2) | Triclinic | — | — | — | 3.59 |
| P-1 (No. 2) | Triclinic | — | — | — | 4.61 |
| P-1 (No. 2) | Triclinic | — | — | — | 6.46 |
| P-1 (No. 2) | Triclinic | — | — | — | 2.72 |
| P-1 (No. 2) | Triclinic | — | — | — | 4.67 |
Applications
Where Bromine dioxide is used.
Frequently Asked Questions
Common questions about Bromine dioxide, answered from cross-validated data.
What is BrO2?
Bromine dioxide is an unstable inorganic compound that exists as a radical species. It is primarily studied in the context of atmospheric chemistry and chemical kinetics due to its role in the depletion of ozone.
What is BrO2 used for?
What is the band gap of BrO2?
Is BrO2 a metal, semiconductor, or insulator?
Is BrO2 thermodynamically stable?
What is the crystal structure of BrO2?
What is the density of BrO2?
How many polymorphs of BrO2 are known?
What elements does BrO2 contain?
Where does the data for BrO2 come from?
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
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