MnRh
MnRh is a thermodynamically stable metallic alloy consisting of manganese and rhodium that is widely recognized for its structural consistency in catalytic research.
About MnRh
MnRh is a metallic alloy composed of manganese and rhodium, belonging to the class of platinum-group alloy catalysts. As a thermodynamically stable compound, it occupies a favorable position on the convex hull, indicating robust structural integrity under standard conditions. Its metallic nature suggests high electrical conductivity, which is a critical feature for catalytic applications where electron transfer is essential. The high volume of reported structures across multiple databases highlights its significance as a well-characterized material in solid-state chemistry. Researchers value this compound for its potential in specialized catalytic processes where the synergy between manganese and rhodium can be leveraged. Its stability makes it a reliable candidate for further experimental investigation in advanced materials science.
Key Properties
Cross-validated computational properties for MnRh, aggregated across 5 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 MnRh. 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.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for MnRh, 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. |
|---|---|---|---|---|---|
| Pm-3m (No. 221) | cubic | 0.00 | 0.0000 | -19.906 | 9.45 |
| C2/c (No. 15) | Monoclinic | — | — | — | 7.11 |
| C2 (No. 5) | Monoclinic | — | — | — | 5.69 |
| Cm (No. 8) | Monoclinic | — | — | — | 8.89 |
| Cm (No. 8) | Monoclinic | — | — | — | 9.31 |
| Cm (No. 8) | Monoclinic | — | — | — | 9.19 |
| P21/m (No. 11) | Monoclinic | — | — | — | 8.31 |
| P21/m (No. 11) | Monoclinic | — | — | — | 9.46 |
| P21/m (No. 11) | Monoclinic | — | — | — | 9.16 |
| Cm (No. 8) | Monoclinic | — | — | — | 5.23 |
| Cm (No. 8) | Monoclinic | — | — | — | 7.62 |
| C2 (No. 5) | Monoclinic | — | — | — | 6.54 |
Applications
Where MnRh is used.
Frequently Asked Questions
Common questions about MnRh, answered from cross-validated data.
What is MnRh?
MnRh is a thermodynamically stable metallic alloy consisting of manganese and rhodium that is widely recognized for its structural consistency in catalytic research.
What is MnRh used for?
What is the band gap of MnRh?
Is MnRh a metal, semiconductor, or insulator?
Is MnRh thermodynamically stable?
What is the crystal structure of MnRh?
What is the density of MnRh?
How many polymorphs of MnRh are known?
What elements does MnRh contain?
Where does the data for MnRh come from?
How It Compares
Within the platinum-group alloy catalysts class.
Unlike the more complex binary compounds in its class such as As2Pt or Ga2Ru, MnRh represents a simpler, highly stable stoichiometric alloy. While members like LaRh or BaPd often exhibit distinct electronic behaviors based on their constituent elements, MnRh is distinguished by its metallic character and its status as a frequently studied structure within the broader family of platinum-group alloys.
Related Compounds
Other Platinum-Group Alloy Catalysts in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
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