As4O20P4
As4O20P4 is a stable, semiconducting inorganic compound consisting of arsenic, phosphorus, and oxygen atoms.
About As4O20P4
As4O20P4 is a complex inorganic compound composed of arsenic, oxygen, and phosphorus. As a thermodynamically stable phase residing on the convex hull, it represents a robust structural arrangement within its chemical system.
This material exhibits semiconducting electronic character, making it a subject of interest for fundamental studies in solid-state physics. Its unique atomic configuration allows for diverse structural manifestations, as evidenced by multiple reported entries across research databases.
Key Properties
Cross-validated computational properties for As4O20P4, 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 As4O20P4, 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. |
|---|---|---|---|---|---|
| P212121 (No. 19) | orthorhombic | 2.02 | 0.0000 | -7.039 | 3.92 |
| — | — | — | — | — | 2.54 |
| P212121 (No. 19) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 0.99 |
Applications
Where As4O20P4 is used.
Frequently Asked Questions
Common questions about As4O20P4, answered from cross-validated data.
What is As4O20P4?
As4O20P4 is a stable, semiconducting inorganic compound consisting of arsenic, phosphorus, and oxygen atoms.
What is As4O20P4 used for?
What is the band gap of As4O20P4?
Is As4O20P4 a metal, semiconductor, or insulator?
Is As4O20P4 thermodynamically stable?
What is the crystal structure of As4O20P4?
What is the density of As4O20P4?
How many polymorphs of As4O20P4 are known?
What elements does As4O20P4 contain?
Where does the data for As4O20P4 come from?
How It Compares
As a distinct inorganic compound, As4O20P4 occupies a specialized niche in the landscape of arsenic-phosphorus-oxygen materials. Without direct structural siblings in this specific class, it serves as a primary reference point for understanding the stability and electronic behavior of complex polyanionic frameworks in this chemical space.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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