Cr4K6Na2O16
Cr4K6Na2O16 is a thermodynamically stable, wide-gap insulating layered oxide containing chromium, potassium, and sodium.
About Cr4K6Na2O16
Cr4K6Na2O16 is a complex layered sodium transition-metal oxide that occupies a stable position on the convex hull. Its structural integrity and electronic nature as a wide-gap insulator make it a significant subject for researchers investigating the fundamental properties of alkali-metal chromium oxides. The material is characterized by a high degree of structural diversity, as evidenced by its presence across multiple crystallographic databases. This stability and structural richness suggest potential utility in advanced electrochemical or solid-state ion-conducting applications where robust, well-defined oxide frameworks are required. Its unique arrangement of chromium and alkali cations within the layered lattice provides a distinct platform for studying ion transport and electronic behavior in insulating oxide systems.
Key Properties
Cross-validated computational properties for Cr4K6Na2O16, 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 Cr4K6Na2O16, 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. |
|---|---|---|---|---|---|
| C2/c (No. 15) | monoclinic | 3.05 | 0.0000 | -6.593 | 2.86 |
| C2/c (No. 15) | monoclinic | 3.08 | 0.0022 | -6.591 | 2.63 |
| P-3m1 (No. 164) | trigonal | 3.06 | 0.0023 | -6.590 | 2.86 |
| — | — | — | — | — | 2.37 |
| C2/c (No. 15) | — | — | — | — | — |
| C2/c (No. 15) | — | — | — | — | — |
Applications
Where Cr4K6Na2O16 is used.
Frequently Asked Questions
Common questions about Cr4K6Na2O16, answered from cross-validated data.
What is Cr4K6Na2O16?
Cr4K6Na2O16 is a thermodynamically stable, wide-gap insulating layered oxide containing chromium, potassium, and sodium.
What is Cr4K6Na2O16 used for?
What is the band gap of Cr4K6Na2O16?
Is Cr4K6Na2O16 a metal, semiconductor, or insulator?
Is Cr4K6Na2O16 thermodynamically stable?
What is the crystal structure of Cr4K6Na2O16?
What is the density of Cr4K6Na2O16?
How many polymorphs of Cr4K6Na2O16 are known?
What elements does Cr4K6Na2O16 contain?
Where does the data for Cr4K6Na2O16 come from?
How It Compares
Within the layered sodium transition-metal oxides class.
Within the broader family of layered sodium transition-metal oxides, Cr4K6Na2O16 stands apart from more common battery-active materials like NaCoO2 or NaNiO2 due to its insulating electronic character and unique stoichiometry. While siblings such as Na2Ti3O7 are frequently studied for their specific intercalation properties, this chromium-based oxide offers a different structural template that highlights the versatility of the layered oxide class in hosting various transition metals.
Related Compounds
Other Layered Sodium Transition-Metal Oxides in the database.
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).
Analyze Cr4K6Na2O16 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →