InRh
InRh is a stable metallic intermetallic compound composed of indium and rhodium, primarily utilized in catalytic research.
About InRh
InRh is a metallic intermetallic compound belonging to the platinum-group alloy catalyst class. As a thermodynamically stable phase located on the convex hull, it exhibits structural robustness that makes it a significant subject of investigation for high-performance chemical processes.
Its metallic nature and stable composition allow it to function effectively in catalytic environments where durability is paramount. Researchers utilize this compound to explore the synergy between indium and rhodium in driving complex chemical transformations.
Key Properties
Cross-validated computational properties for InRh, aggregated across 6 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 InRh. 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 InRh, 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 | -0.368 | — |
| — | — | 0.00 | 0.0000 | -0.433 | — |
| Pm-3m (No. 221) | cubic | 0.00 | 0.0000 | -23.857 | 10.93 |
| — | — | 0.00 | 0.0012 | -0.432 | — |
| — | — | 0.00 | 0.2003 | -0.233 | — |
| — | — | 0.00 | 0.2389 | -0.194 | — |
| — | — | 0.00 | 0.2915 | -0.142 | — |
| — | — | 0.00 | 0.3666 | -0.066 | — |
| — | — | 0.00 | 0.3784 | -0.055 | — |
| — | — | 0.00 | 0.9896 | 0.557 | — |
| Cm (No. 8) | monoclinic | — | — | — | 7.13 |
| P-1 (No. 2) | triclinic | — | — | — | 8.42 |
Applications
Where InRh is used.
Frequently Asked Questions
Common questions about InRh, answered from cross-validated data.
What is InRh?
InRh is a stable metallic intermetallic compound composed of indium and rhodium, primarily utilized in catalytic research.
What is InRh used for?
What is the band gap of InRh?
Is InRh a metal, semiconductor, or insulator?
Is InRh thermodynamically stable?
What is the crystal structure of InRh?
How many polymorphs of InRh are known?
What elements does InRh contain?
Where does the data for InRh come from?
How It Compares
Within the platinum-group alloy catalysts class.
Within the diverse family of platinum-group alloys, InRh stands out for its thermodynamic stability compared to more complex or metastable phases like As2Pt or Ga2Ru. While many members of this class are studied for their specific electronic configurations, InRh is distinguished by its structural simplicity and reliability as a stable metallic catalyst.
Related Compounds
Other Platinum-Group Alloy Catalysts in the database.
Data sources & attribution
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- 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)
- 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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