Au2Pt2
Au2Pt2 is a metallic intermetallic alloy composed of gold and platinum that is studied for its potential roles in catalytic applications.
About Au2Pt2
Au2Pt2 is a metallic platinum-group alloy that occupies a significant position within the landscape of intermetallic catalysts. Its electronic structure, characterized by a lack of a band gap, indicates robust metallic conductivity essential for electron transfer processes in catalytic environments.
As a near-hull compound, this material is considered a promising candidate for experimental synthesis. Its presence across multiple structural databases highlights its importance as a subject of ongoing research into the fundamental properties of gold-platinum binary systems.
Key Properties
Cross-validated computational properties for Au2Pt2, 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.
Reported Structures
Lowest-energy structures reported for Au2Pt2, 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. |
|---|---|---|---|---|---|
| R-3m (No. 166) | trigonal | 0.00 | 0.0128 | -51.024 | 19.90 |
| P-6m2 (No. 187) | hexagonal | 0.00 | 0.0287 | -51.008 | 19.83 |
| P-3m1 (No. 164) | — | — | — | — | — |
| P63/mmc (No. 194) | — | — | — | — | — |
| Cmme (No. 67) | — | — | — | — | — |
| P4/nmm (No. 129) | — | — | — | — | — |
| Pmmn (No. 59) | — | — | — | — | — |
| Cmcm (No. 63) | — | — | — | — | — |
| I41/amd (No. 141) | — | — | — | — | — |
| Pmmn (No. 59) | — | — | — | — | — |
| P63/mmc (No. 194) | — | — | — | — | — |
| Imma (No. 74) | — | — | — | — | — |
Applications
Where Au2Pt2 is used.
Frequently Asked Questions
Common questions about Au2Pt2, answered from cross-validated data.
What is Au2Pt2?
Au2Pt2 is a metallic intermetallic alloy composed of gold and platinum that is studied for its potential roles in catalytic applications.
What is Au2Pt2 used for?
What is the band gap of Au2Pt2?
Is Au2Pt2 a metal, semiconductor, or insulator?
Is Au2Pt2 thermodynamically stable?
What is the crystal structure of Au2Pt2?
What is the density of Au2Pt2?
How many polymorphs of Au2Pt2 are known?
What elements does Au2Pt2 contain?
Where does the data for Au2Pt2 come from?
How It Compares
Within the platinum-group alloy catalysts class.
Compared to other platinum-group alloys like As2Pt or Ga2Ru, Au2Pt2 represents a distinct combination of noble metals that balances structural complexity with the catalytic utility typical of the class. While many members of this group, such as IrSe2, often incorporate non-metallic elements to tune their reactivity, Au2Pt2 relies on the synergistic interplay between gold and platinum to define its performance profile.
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).
- 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).
- 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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