K2Mo4O13
K2Mo4O13 has a DFT band gap of 2.95–3.51 eV across 7 reported structures in 2 space groups; its reference structure is triclinic (P-1 (No. 2)). Cross-validated across 3 computational databases.
KMoO
At a glance
Key Properties
Cross-validated computational properties for K2Mo4O13, 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.
2.95–3.51 eV
Range across DFT structures · ground state: wide gap
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.
0.004 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.
Near Hull
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
7
3 databases, 2 space groups
Validation
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of K2Mo4O13. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
0.97 / 1.00
Trust tier: medium
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
0.007 eV
EAH spread across sources
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
2
materials_project, oqmd
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
—
Crystallography
Reported Structures
Lowest-energy structures reported for K2Mo4O13, 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. |
|---|---|---|---|---|---|
| Pbca (No. 61) | orthorhombic | 2.95 | 0.0039 | -7.847 | 3.87 |
| P-1 (No. 2) | triclinic | 3.51 | 0.0099 | -7.841 | 3.95 |
| — | — | 3.05 | 0.0110 | -2.247 | — |
| P-1 (No. 2) | triclinic | 0.00 | 4.3286 | -3.522 | 3.65 |
| P-1 (No. 2) | triclinic | — | — | — | 3.97 |
| P-1 (No. 2) | triclinic | — | — | — | 3.97 |
| Pbca (No. 61) | orthorhombic | — | — | — | 4.14 |
Synthesis
Synthesis Routes
Literature-extracted synthesis procedures targeting K2Mo4O13.
Sol Gel
Procedure available · ceder_sol_gel
Solid State
Procedure available · ceder_solid_state
Reference
Frequently Asked Questions
Common questions about K2Mo4O13, answered from cross-validated data.
What is the band gap of K2Mo4O13?
K2Mo4O13 has a DFT-computed band gap of 2.95–3.51 eV across 7 reported structures. Standard DFT underestimates band gaps, so the measured gap is typically larger.
More questions
Is K2Mo4O13 a metal, semiconductor, or insulator?
DFT predicts a wide band gap of up to 3.51 eV (an insulator or wide-band-gap material).
Is K2Mo4O13 thermodynamically stable?
K2Mo4O13 has a lowest energy above hull of 0.004 eV/atom (near hull).
What is the crystal structure of K2Mo4O13?
The reference structure of K2Mo4O13 is triclinic symmetry, space group P-1 (No. 2).
What is the density of K2Mo4O13?
The computed density of the ground-state structure of K2Mo4O13 is 3.95 g/cm³.
How many polymorphs of K2Mo4O13 are known?
7 structures of K2Mo4O13 are reported across 3 databases, spanning 2 distinct space groups.
How is K2Mo4O13 synthesized?
Literature-reported routes for K2Mo4O13 include sol gel, solid state (2 procedures documented).
What elements does K2Mo4O13 contain?
K2Mo4O13 contains K, Mo, and O (3 elements).
Where does the data for K2Mo4O13 come from?
K2Mo4O13 data is cross-referenced from materials_project, oqmd, cod.
Data sources & attribution
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
Analyze K2Mo4O13 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 85 source databases.
Explore the Platform →