La2Mo2O9
La2Mo2O9 is a metastable, insulating lanthanum molybdate oxide utilized in research for its potential electrochemical properties.
About La2Mo2O9
La2Mo2O9 is a complex oxide characterized by its wide-band-gap insulating electronic nature. As a metastable material, it exhibits structural complexity that has drawn significant interest in materials science research for its potential utility in specialized solid-state systems.
Its importance lies in its unique lattice configuration, which provides a framework for ionic transport. While it remains a subject of ongoing study, its role as a functional oxide makes it a candidate for advanced electrochemical devices where high-temperature stability and specific ion mobility are required.
Key Properties
Cross-validated computational properties for La2Mo2O9, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of La2Mo2O9. Tight agreement means computed properties can be trusted without re-running calculations.
Only 1 independent DFT source (materials_project) reports a hull energy for La2Mo2O9, so cross-source agreement can't be assessed yet.
Reported Structures
Lowest-energy structures reported for La2Mo2O9, 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. |
|---|---|---|---|---|---|
| P1 (No. 1) | triclinic | 3.07 | 0.0422 | -8.647 | 5.24 |
| P1 (No. 1) | triclinic | — | — | — | 5.76 |
| P1 (No. 1) | triclinic | — | — | — | 5.24 |
| P1 (No. 1) | triclinic | — | — | — | 5.38 |
| P21 (No. 4) | monoclinic | — | — | — | 5.56 |
| P213 (No. 198) | cubic | — | — | — | 5.38 |
Synthesis Routes
Literature-extracted synthesis procedures targeting La2Mo2O9.
Applications
Where La2Mo2O9 is used.
Patent Landscape
1 patent reference La2Mo2O9 or close compositional variants.
| Patent | Title | Assignee | Granted |
|---|---|---|---|
| 7018566 | Compounds derived from La2Mo2O9 and their use as ionic conductors | — | — |
Frequently Asked Questions
Common questions about La2Mo2O9, answered from cross-validated data.
What is La2Mo2O9?
La2Mo2O9 is a metastable, insulating lanthanum molybdate oxide utilized in research for its potential electrochemical properties.
What is La2Mo2O9 used for?
What is the band gap of La2Mo2O9?
Is La2Mo2O9 a metal, semiconductor, or insulator?
Is La2Mo2O9 thermodynamically stable?
What is the crystal structure of La2Mo2O9?
What is the density of La2Mo2O9?
How many polymorphs of La2Mo2O9 are known?
How is La2Mo2O9 synthesized?
What elements does La2Mo2O9 contain?
Where does the data for La2Mo2O9 come from?
How It Compares
As a specialized oxide, La2Mo2O9 occupies a distinct niche in the landscape of lanthanum-based molybdates. It serves as a primary example of how metastability can be leveraged to engineer materials with specific functional properties that are not typically found in more common, highly stable ceramic oxides.
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)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
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