KCrF6
This inorganic compound is a complex fluoride salt containing potassium and chromium. It is primarily utilized in specialized chemical research and as a precursor for the synthesis of other chromium-based materials.
CrFK
Overview
Key Properties
Cross-validated computational properties for KCrF6, 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.
1.40 eV
Range across DFT structures
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.
0.000 eV/atom
Best (lowest) across sources
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.
On hull (stable)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
6
3 databases, 1 space group
Crystallography
Reported Structures
Lowest-energy structures reported for KCrF6, 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. |
|---|---|---|---|---|---|
| R-3 (No. 148) | trigonal | 1.40 | 0.0000 | -5.402 | 3.12 |
| R-3 (No. 148) | Trigonal | — | — | — | 2.80 |
| R-3 (No. 148) | Trigonal | — | — | — | 3.01 |
| R-3 (No. 148) | Trigonal | — | — | — | 2.89 |
| R-3 (No. 148) | — | — | — | — | — |
| R-3 (No. 148) | — | — | — | — | — |
Uses
Applications
Where KCrF6 is used.
Chemical researchMaterials synthesisInorganic chemistry studies
Reference
Frequently Asked Questions
Common questions about KCrF6, answered from cross-validated data.
What is KCrF6?
This inorganic compound is a complex fluoride salt containing potassium and chromium. It is primarily utilized in specialized chemical research and as a precursor for the synthesis of other chromium-based materials.
More questions
What is KCrF6 used for?
KCrF6 is used in chemical research, materials synthesis, and inorganic chemistry studies.
What is the band gap of KCrF6?
KCrF6 has a DFT-computed band gap of 1.40 eV across 6 reported structures.
Is KCrF6 a metal, semiconductor, or insulator?
With a band gap up to 1.40 eV it is a semiconductor.
Is KCrF6 thermodynamically stable?
Yes — KCrF6 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of KCrF6?
The lowest-energy reported polymorph of KCrF6 is trigonal symmetry, space group R-3 (No. 148).
What is the density of KCrF6?
The computed density of the ground-state structure of KCrF6 is 3.12 g/cm³.
How many polymorphs of KCrF6 are known?
6 structures of KCrF6 are reported across 3 databases, spanning 1 distinct space group.
What elements does KCrF6 contain?
KCrF6 contains Cr, F, and K (3 elements).
Where does the data for KCrF6 come from?
KCrF6 data is cross-referenced from materials_project, mpaloe, jarvis.
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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