As2F4K2O2
As2F4K2O2 is a semiconducting oxyfluoride compound that exists in a metastable state.
About As2F4K2O2
As2F4K2O2 is a complex inorganic compound containing arsenic, fluorine, potassium, and oxygen. As a semiconducting material, it exhibits electronic properties that distinguish it from simple ionic salts, suggesting potential for specialized charge-transport applications. The compound is currently identified as being above the thermodynamic hull, indicating that it is likely metastable under standard conditions. Its existence across multiple reported structures highlights the structural diversity possible within this specific chemical composition.
Key Properties
Cross-validated computational properties for As2F4K2O2, 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 As2F4K2O2, 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. |
|---|---|---|---|---|---|
| C2/c (No. 15) | monoclinic | 0.50 | 0.2270 | -4.949 | 3.62 |
| C2/c (No. 15) | monoclinic | 0.64 | 0.3024 | -4.874 | 3.30 |
| No. 0 | unknown | — | — | — | 0.58 |
| — | — | — | — | — | 2.37 |
Frequently Asked Questions
Common questions about As2F4K2O2, answered from cross-validated data.
What is As2F4K2O2?
As2F4K2O2 is a semiconducting oxyfluoride compound that exists in a metastable state.
What is the band gap of As2F4K2O2?
Is As2F4K2O2 a metal, semiconductor, or insulator?
Is As2F4K2O2 thermodynamically stable?
What is the crystal structure of As2F4K2O2?
What is the density of As2F4K2O2?
How many polymorphs of As2F4K2O2 are known?
What elements does As2F4K2O2 contain?
Where does the data for As2F4K2O2 come from?
How It Compares
As a unique inorganic phase, As2F4K2O2 occupies a distinct position within the landscape of arsenic-based oxyfluorides. While many materials in this class are highly stable, this compound represents a more challenging synthetic target due to its metastable nature, offering researchers a case study in the structural complexity of non-equilibrium phases.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
Analyze As2F4K2O2 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →