Li2Mo2O8Rb2
Li2Mo2O8Rb2 is a thermodynamically stable, insulating quaternary oxide composed of lithium, molybdenum, rubidium, and oxygen.

About Li2Mo2O8Rb2
Li2Mo2O8Rb2 is a complex oxide featuring lithium, molybdenum, oxygen, and rubidium. As a thermodynamically stable phase located on the convex hull, it represents a robust crystalline arrangement that maintains structural integrity under standard conditions. Its insulating electronic character suggests potential utility in applications where dielectric properties or specific optical transparency are required. The material has been documented across multiple databases, indicating a consistent and reproducible structural profile that makes it a subject of interest for solid-state research. Its unique combination of alkali metals and transition metal oxides provides a distinct chemical environment that researchers utilize to explore new functional inorganic architectures.
Key Properties
Cross-validated computational properties for Li2Mo2O8Rb2, 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 Li2Mo2O8Rb2, 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. |
|---|---|---|---|---|---|
| Cc (No. 9) | monoclinic | 4.53 | 0.0000 | -7.047 | 3.04 |
| P1 (No. 1) | — | — | — | — | — |
| — | — | — | — | — | 2.19 |
Applications
Where Li2Mo2O8Rb2 is used.
Frequently Asked Questions
Common questions about Li2Mo2O8Rb2, answered from cross-validated data.
What is Li2Mo2O8Rb2?
Li2Mo2O8Rb2 is a thermodynamically stable, insulating quaternary oxide composed of lithium, molybdenum, rubidium, and oxygen.
What is Li2Mo2O8Rb2 used for?
What is the band gap of Li2Mo2O8Rb2?
Is Li2Mo2O8Rb2 a metal, semiconductor, or insulator?
Is Li2Mo2O8Rb2 thermodynamically stable?
What is the crystal structure of Li2Mo2O8Rb2?
What is the density of Li2Mo2O8Rb2?
How many polymorphs of Li2Mo2O8Rb2 are known?
What elements does Li2Mo2O8Rb2 contain?
Where does the data for Li2Mo2O8Rb2 come from?
How It Compares
As a specialized quaternary oxide, Li2Mo2O8Rb2 occupies a unique niche in materials science. Unlike simpler binary or ternary oxides, this compound leverages the interplay between lithium and rubidium cations to stabilize the molybdenum-oxygen framework, serving as a distinct example of how complex stoichiometry can yield thermodynamically favored inorganic structures.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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