AgF
Silver(I) fluoride · Silver monofluoride
Silver(I) fluoride is a thermodynamically stable, metallic compound of silver and fluorine that serves as a key material in chemical research.
About Silver(I) fluoride
Silver(I) fluoride is a distinct inorganic compound composed of silver and fluorine. As a thermodynamically stable member of the silver halide family, it occupies a unique position on the convex hull, indicating robust structural integrity under standard conditions. Its metallic electronic character sets it apart from many other typical halide insulators, making it a subject of significant interest in condensed matter research. With a vast array of reported structures across multiple databases, it remains one of the most thoroughly documented silver-based compounds. Its behavior is critical for understanding the interplay between transition metal cations and highly electronegative anions in solid-state chemistry.
Key Properties
Cross-validated computational properties for Silver(I) fluoride, aggregated across 5 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of AgF. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for AgF, 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 | 0.00 | 0.0000 | -3.606 | 7.07 |
| Fm-3m (No. 225) | cubic | 0.00 | 0.0000 | -1.042 | — |
| — | — | 0.00 | 0.0000 | -1.163 | — |
| — | — | 0.00 | 0.0029 | -1.160 | — |
| — | — | 0.00 | 0.0043 | -1.158 | — |
| — | — | 0.00 | 0.0048 | -1.158 | — |
| — | — | 0.00 | 0.0247 | -1.138 | — |
| — | — | 0.00 | 0.0247 | -1.138 | — |
| — | — | 0.00 | 0.0293 | -1.133 | — |
| — | — | 0.00 | 0.0337 | -1.129 | — |
| — | — | 0.00 | 0.0845 | -1.078 | — |
| — | — | 0.00 | 0.0861 | -1.076 | — |
Applications
Where Silver(I) fluoride is used.
Frequently Asked Questions
Common questions about Silver(I) fluoride, answered from cross-validated data.
What is AgF?
Silver(I) fluoride is a thermodynamically stable, metallic compound of silver and fluorine that serves as a key material in chemical research.
What is AgF used for?
What is the band gap of AgF?
Is AgF a metal, semiconductor, or insulator?
Is AgF thermodynamically stable?
What is the crystal structure of AgF?
What is the density of AgF?
How many polymorphs of AgF are known?
What elements does AgF contain?
Where does the data for AgF come from?
How It Compares
As a standalone silver halide, AgF serves as a fundamental reference point for understanding the electronic and structural evolution of the silver-halogen series, providing a metallic contrast to the more common insulating behavior found in its heavier halide counterparts.
Data sources & attribution
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
Analyze AgF in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 85 source databases.
Explore the Platform →