H4NF
Ammonium fluoride · NH4F
Ammonium fluoride is a white, crystalline inorganic compound that is highly soluble in water. It is widely utilized in industrial processes for its ability to etch glass and as a chemical reagent in various manufacturing applications.
Key Properties
Cross-validated computational properties for Ammonium fluoride, 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 H4NF, 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. |
|---|---|---|---|---|---|
| P63mc (No. 186) | hexagonal | 5.96 | 0.0000 | -5.037 | 1.02 |
| R3c (No. 161) | trigonal | 6.31 | 0.0317 | -5.005 | 1.49 |
| P63mc (No. 186) | — | — | — | — | — |
| P63mc (No. 186) | Hexagonal | — | — | — | 1.00 |
| P63mc (No. 186) | Hexagonal | — | — | — | 1.00 |
| R-3m (No. 166) | — | — | — | — | — |
| P63mc (No. 186) | Hexagonal | — | — | — | 1.01 |
| P-43m (No. 215) | — | — | — | — | — |
Applications
Where Ammonium fluoride is used.
Frequently Asked Questions
Common questions about Ammonium fluoride, answered from cross-validated data.
What is H4NF?
Ammonium fluoride is a white, crystalline inorganic compound that is highly soluble in water. It is widely utilized in industrial processes for its ability to etch glass and as a chemical reagent in various manufacturing applications.
What is H4NF used for?
What is the band gap of H4NF?
Is H4NF a metal, semiconductor, or insulator?
Is H4NF thermodynamically stable?
What is the crystal structure of H4NF?
What is the density of H4NF?
How many polymorphs of H4NF are known?
What elements does H4NF contain?
Where does the data for H4NF come from?
Related Compounds
Other Hydrogen Storage Hydrides in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
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