RhF6
Rhodium hexafluoride · Rhodium(VI) fluoride
Rhodium hexafluoride is a stable, semiconducting inorganic compound composed of rhodium and fluorine that serves as a key subject in the study of high-oxidation-state transition metal fluorides.
About Rhodium hexafluoride
Rhodium hexafluoride is a notable member of the platinum-group fluoride family, characterized by its semiconducting electronic structure. As a thermodynamically stable phase residing on the convex hull, it represents a well-defined state of rhodium in a highly oxidized environment.
This compound is of significant interest in inorganic chemistry due to the unique bonding interactions between rhodium and fluorine. Its stability profile makes it a subject of extensive structural investigation, with numerous reported crystalline arrangements documented across major materials databases.
Key Properties
Cross-validated computational properties for Rhodium hexafluoride, 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 RhF6, 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 | 0.59 | 0.0000 | -7.506 | 3.83 |
| Im-3m (No. 229) | cubic | 0.87 | 0.0245 | -7.482 | 2.89 |
| C2/c (No. 15) | monoclinic | 0.74 | 0.3967 | -7.110 | 2.10 |
| Pm (No. 6) | Monoclinic | — | — | — | 4.40 |
| Im-3m (No. 229) | — | — | — | — | — |
| Pm (No. 6) | Monoclinic | — | — | — | 4.63 |
| Amm2 (No. 38) | Orthorhombic | — | — | — | 5.53 |
| Im-3m (No. 229) | Cubic | — | — | — | 2.92 |
| Im-3m (No. 229) | Cubic | — | — | — | 2.68 |
| Cm (No. 8) | Monoclinic | — | — | — | 5.34 |
| Cm (No. 8) | Monoclinic | — | — | — | 6.69 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 3.65 |
Applications
Where Rhodium hexafluoride is used.
Frequently Asked Questions
Common questions about Rhodium hexafluoride, answered from cross-validated data.
What is RhF6?
Rhodium hexafluoride is a stable, semiconducting inorganic compound composed of rhodium and fluorine that serves as a key subject in the study of high-oxidation-state transition metal fluorides.
What is RhF6 used for?
What is the band gap of RhF6?
Is RhF6 a metal, semiconductor, or insulator?
Is RhF6 thermodynamically stable?
What is the crystal structure of RhF6?
What is the density of RhF6?
How many polymorphs of RhF6 are known?
What elements does RhF6 contain?
Where does the data for RhF6 come from?
How It Compares
Within the platinum-group alloy catalysts class.
Unlike the metallic or intermetallic phases in its class such as LaRh or GeRu, RhF6 is defined by its fluoride-based chemistry and semiconducting nature. While many platinum-group alloys like As2Pt or BaPd are studied for their metallic conductivity and catalytic potential, RhF6 stands out as a highly reactive, non-metallic species that highlights the diverse oxidation states accessible to the platinum-group metals.
Related Compounds
Other Platinum-Group Alloy Catalysts in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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