F16La4Rb4
F16La4Rb4 is a stable, insulating fluoride compound containing lanthanum and rubidium.
About F16La4Rb4
F16La4Rb4 is a complex fluoride compound composed of lanthanum, rubidium, and fluorine. As a wide-band-gap insulator, it exhibits robust electronic characteristics that make it an interesting subject for fundamental materials science studies.
Because this compound is thermodynamically stable and sits on the convex hull, it represents a well-defined phase. Its structural integrity suggests it may serve as a stable host or precursor in specialized inorganic synthesis applications.
Key Properties
Cross-validated computational properties for F16La4Rb4, 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 F16La4Rb4, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 6.09 | 0.0000 | -6.264 | 4.98 |
| P21/m (No. 11) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 1.23 |
Applications
Where F16La4Rb4 is used.
Frequently Asked Questions
Common questions about F16La4Rb4, answered from cross-validated data.
What is F16La4Rb4?
F16La4Rb4 is a stable, insulating fluoride compound containing lanthanum and rubidium.
What is F16La4Rb4 used for?
What is the band gap of F16La4Rb4?
Is F16La4Rb4 a metal, semiconductor, or insulator?
Is F16La4Rb4 thermodynamically stable?
What is the crystal structure of F16La4Rb4?
What is the density of F16La4Rb4?
How many polymorphs of F16La4Rb4 are known?
What elements does F16La4Rb4 contain?
Where does the data for F16La4Rb4 come from?
How It Compares
As a unique fluoride phase, F16La4Rb4 occupies a distinct position in inorganic chemistry, representing a stable arrangement of alkali and rare-earth elements that provides a baseline for understanding complex fluoride lattice behaviors.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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