As2O8Sb2
As2O8Sb2 is a stable, wide-gap insulating inorganic compound composed of arsenic, antimony, and oxygen.
About As2O8Sb2
As2O8Sb2 is an inorganic compound composed of arsenic, antimony, and oxygen. As a wide-gap insulator, it exhibits distinct electronic properties that make it an intriguing subject for fundamental materials science studies.
Due to its near-hull thermodynamic stability, this compound is considered a promising candidate for experimental synthesis. Its structural characteristics suggest potential utility in specialized electronic or optical applications where insulating behavior is required.
Key Properties
Cross-validated computational properties for As2O8Sb2, 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 As2O8Sb2, 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/m (No. 11) | monoclinic | 3.08 | 0.0114 | -6.493 | 4.81 |
| P21/m (No. 11) | — | — | — | — | — |
| — | — | — | — | — | 4.39 |
Applications
Where As2O8Sb2 is used.
Frequently Asked Questions
Common questions about As2O8Sb2, answered from cross-validated data.
What is As2O8Sb2?
As2O8Sb2 is a stable, wide-gap insulating inorganic compound composed of arsenic, antimony, and oxygen.
What is As2O8Sb2 used for?
What is the band gap of As2O8Sb2?
Is As2O8Sb2 a metal, semiconductor, or insulator?
Is As2O8Sb2 thermodynamically stable?
What is the crystal structure of As2O8Sb2?
What is the density of As2O8Sb2?
How many polymorphs of As2O8Sb2 are known?
What elements does As2O8Sb2 contain?
Where does the data for As2O8Sb2 come from?
How It Compares
As a unique inorganic compound, As2O8Sb2 occupies a specialized niche in materials research. Without direct siblings for comparison, it serves as a distinct reference point for understanding the complex interplay between arsenic and antimony oxides in stable crystalline forms.
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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