F40Rb8Te8
F40Rb8Te8 is a stable, insulating inorganic compound composed of fluorine, rubidium, and tellurium.

About F40Rb8Te8
F40Rb8Te8 is a complex inorganic compound characterized by its wide-band-gap insulating electronic nature. As a thermodynamically stable phase residing on the convex hull, it represents a robust structural arrangement of fluorine, rubidium, and tellurium atoms.
This material is notable for its structural diversity, with multiple documented configurations across various databases. Its stability and insulating properties make it an intriguing subject for fundamental research into complex halide-chalcogenide systems.
Key Properties
Cross-validated computational properties for F40Rb8Te8, 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 F40Rb8Te8, 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 | 4.89 | 0.0000 | -4.692 | 4.21 |
| — | — | — | — | — | 3.83 |
| — | — | — | — | — | 3.83 |
| — | — | — | — | — | 3.83 |
| Pnma (No. 62) | — | — | — | — | — |
Frequently Asked Questions
Common questions about F40Rb8Te8, answered from cross-validated data.
What is F40Rb8Te8?
F40Rb8Te8 is a stable, insulating inorganic compound composed of fluorine, rubidium, and tellurium.
What is the band gap of F40Rb8Te8?
Is F40Rb8Te8 a metal, semiconductor, or insulator?
Is F40Rb8Te8 thermodynamically stable?
What is the crystal structure of F40Rb8Te8?
What is the density of F40Rb8Te8?
How many polymorphs of F40Rb8Te8 are known?
What elements does F40Rb8Te8 contain?
Where does the data for F40Rb8Te8 come from?
How It Compares
As a distinct member of its chemical system, F40Rb8Te8 occupies a unique position due to its high thermodynamic stability. While it represents a specific stoichiometry within this complex arrangement of elements, it serves as a primary reference point for understanding the structural landscape of rubidium-tellurium-fluorine compounds.
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).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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