F40I4Sb4
F40I4Sb4 is a wide-band-gap insulating compound that is theoretically stable enough to be a target for laboratory synthesis.

About F40I4Sb4
F40I4Sb4 is a complex inorganic compound characterized by its insulating electronic nature and wide band gap. Its structural configuration suggests a high degree of chemical specificity, positioning it as a distinct entity within its compositional family.
As a near-hull material, F40I4Sb4 is considered a viable candidate for experimental synthesis. Its stability profile makes it an intriguing subject for researchers investigating the interplay between fluorine, iodine, and antimony in solid-state systems.
Key Properties
Cross-validated computational properties for F40I4Sb4, 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 F40I4Sb4, 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. |
|---|---|---|---|---|---|
| Ibca (No. 73) | orthorhombic | 4.07 | 0.0074 | -4.341 | 3.85 |
| Ibca (No. 73) | — | — | — | — | — |
| Ibca (No. 73) | — | — | — | — | — |
Frequently Asked Questions
Common questions about F40I4Sb4, answered from cross-validated data.
What is F40I4Sb4?
F40I4Sb4 is a wide-band-gap insulating compound that is theoretically stable enough to be a target for laboratory synthesis.
What is the band gap of F40I4Sb4?
Is F40I4Sb4 a metal, semiconductor, or insulator?
Is F40I4Sb4 thermodynamically stable?
What is the crystal structure of F40I4Sb4?
What is the density of F40I4Sb4?
How many polymorphs of F40I4Sb4 are known?
What elements does F40I4Sb4 contain?
Where does the data for F40I4Sb4 come from?
How It Compares
As a unique inorganic composition, F40I4Sb4 stands as a specialized entry in the database. Without direct structural siblings, it serves as a distinct reference point for exploring the electronic and thermodynamic properties of complex fluoride-iodide-antimony systems.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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