InPt
InPt is a metallic intermetallic alloy composed of indium and platinum that is studied for its potential in catalytic applications.
About InPt
InPt is a metallic intermetallic compound belonging to the platinum-group alloy catalyst family. Its electronic structure is characterized by metallic behavior, reflecting the strong orbital interactions between indium and platinum atoms. The material is recognized as thermodynamically stable, placing it near the convex hull of stability and making it a viable candidate for experimental synthesis and characterization.
With a significant number of reported structures across various databases, InPt serves as a key reference point for understanding the phase space of platinum-based alloys. Its structural diversity is essential for researchers investigating how atomic arrangement influences catalytic activity and surface reactivity in industrial processes.
Key Properties
Cross-validated computational properties for InPt, aggregated across 4 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 InPt. 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 InPt, 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. |
|---|---|---|---|---|---|
| — | — | 0.00 | 0.0000 | -0.520 | — |
| — | — | 0.00 | 0.0013 | -0.519 | — |
| C2/m (No. 12) | monoclinic | 0.00 | 0.0201 | -37.605 | 13.61 |
| — | — | — | 0.0473 | -0.473 | — |
| P4/mmm (No. 123) | tetragonal | 0.00 | 0.1094 | -0.356 | — |
| — | — | 0.00 | 0.1362 | -0.384 | — |
| — | — | 0.00 | 0.1456 | -0.375 | — |
| R-3m (No. 166) | trigonal | 0.00 | 0.2073 | -0.258 | — |
| — | — | 0.00 | 0.2237 | -0.297 | — |
| R-3m (No. 166) | trigonal | 0.00 | 0.2259 | -37.399 | 13.70 |
| — | — | 0.00 | 0.2486 | -0.272 | — |
| — | — | 0.00 | 0.2569 | -0.264 | — |
Applications
Where InPt is used.
Frequently Asked Questions
Common questions about InPt, answered from cross-validated data.
What is InPt?
InPt is a metallic intermetallic alloy composed of indium and platinum that is studied for its potential in catalytic applications.
What is InPt used for?
What is the band gap of InPt?
Is InPt a metal, semiconductor, or insulator?
Is InPt thermodynamically stable?
What is the crystal structure of InPt?
What is the density of InPt?
How many polymorphs of InPt are known?
What elements does InPt contain?
Where does the data for InPt come from?
How It Compares
Within the platinum-group alloy catalysts class.
Within the diverse class of platinum-group alloys, InPt stands out for its structural richness compared to more specialized or binary-limited counterparts like As2Pt or Ga2Ru. While many members of this class are explored for specific hydrogen evolution or oxidation reactions, InPt provides a distinct metallic framework that offers a different electronic environment than the more complex arsenides or selenides in the group.
Related Compounds
Other Platinum-Group Alloy Catalysts in the database.
Data sources & attribution
- 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)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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