MgO12Rb2Si5
This compound is a complex silicate mineral containing magnesium and rubidium. It is primarily studied in the context of solid-state chemistry and materials science for its structural properties.
MgORbSi
Overview
Key Properties
Cross-validated computational properties for MgO12Rb2Si5, 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.
4.18–4.78 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)
1 DFT source
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
4
3 databases, 2 space groups
Validation
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of MgO12Rb2Si5. 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.
1.00 / 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.
0.000 eV
EAH spread across sources
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
2
materials_project, nomad
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
All match
Crystallography
Reported Structures
Lowest-energy structures reported for MgO12Rb2Si5, 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 | 4.78 | 0.0000 | -7.633 | 2.69 |
| Pbca (No. 61) | orthorhombic | 4.18 | 0.0166 | -7.616 | 2.73 |
| — | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 0.35 |
Uses
Applications
Where MgO12Rb2Si5 is used.
Materials science researchSolid-state chemistry studies
Reference
Frequently Asked Questions
Common questions about MgO12Rb2Si5, answered from cross-validated data.
What is MgO12Rb2Si5?
This compound is a complex silicate mineral containing magnesium and rubidium. It is primarily studied in the context of solid-state chemistry and materials science for its structural properties.
More questions
What is MgO12Rb2Si5 used for?
MgO12Rb2Si5 is used in materials science research and solid-state chemistry studies.
What is the band gap of MgO12Rb2Si5?
MgO12Rb2Si5 has a DFT-computed band gap of 4.18–4.78 eV across 4 reported structures.
Is MgO12Rb2Si5 a metal, semiconductor, or insulator?
With a wide band gap up to 4.78 eV it is an insulator / wide-band-gap material.
Is MgO12Rb2Si5 thermodynamically stable?
Yes — MgO12Rb2Si5 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of MgO12Rb2Si5?
The lowest-energy reported polymorph of MgO12Rb2Si5 is orthorhombic symmetry, space group Pbca (No. 61).
What is the density of MgO12Rb2Si5?
The computed density of the ground-state structure of MgO12Rb2Si5 is 2.69 g/cm³.
How many polymorphs of MgO12Rb2Si5 are known?
4 structures of MgO12Rb2Si5 are reported across 3 databases, spanning 2 distinct space groups.
What elements does MgO12Rb2Si5 contain?
MgO12Rb2Si5 contains Mg, O, Rb, and Si (4 elements).
Where does the data for MgO12Rb2Si5 come from?
MgO12Rb2Si5 data is cross-referenced from materials_project, nomad, cod.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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