AgAsF6Na2
AgAsF6Na2 is a semiconducting, likely metastable quaternary compound containing silver, arsenic, fluorine, and sodium.
About AgAsF6Na2
AgAsF6Na2 is a complex quaternary compound composed of silver, arsenic, fluorine, and sodium. As a semiconducting material, it exhibits electronic properties that distinguish it from simple ionic salts, though its structural diversity across multiple databases suggests a nuanced phase landscape.
Because this compound resides above the thermodynamic hull, it is considered likely unstable under standard conditions. Its existence in multiple reported structures highlights its role as an interesting subject for researchers investigating metastable inorganic phases and complex coordination environments.
Key Properties
Cross-validated computational properties for AgAsF6Na2, 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 AgAsF6Na2, 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. |
|---|---|---|---|---|---|
| Fm-3m (No. 225) | cubic | 1.94 | 0.2194 | -4.398 | 3.30 |
| — | — | — | — | — | 3.30 |
| — | — | — | — | — | — |
| — | — | — | — | — | 3.30 |
Frequently Asked Questions
Common questions about AgAsF6Na2, answered from cross-validated data.
What is AgAsF6Na2?
AgAsF6Na2 is a semiconducting, likely metastable quaternary compound containing silver, arsenic, fluorine, and sodium.
What is the band gap of AgAsF6Na2?
Is AgAsF6Na2 a metal, semiconductor, or insulator?
Is AgAsF6Na2 thermodynamically stable?
What is the crystal structure of AgAsF6Na2?
What is the density of AgAsF6Na2?
How many polymorphs of AgAsF6Na2 are known?
What elements does AgAsF6Na2 contain?
Where does the data for AgAsF6Na2 come from?
How It Compares
As a unique quaternary compound, AgAsF6Na2 represents a specialized niche in materials science where the interplay of transition metals and pnictide-fluoride complexes creates distinct electronic behavior compared to more conventional, stable binary or ternary insulators.
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).
- alexandria — Data from alexandria.
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