Au1Cd2Rh1
Au1Cd2Rh1 is a stable, semiconducting ternary alloy containing gold, cadmium, and rhodium that serves as a specialized material in the study of platinum-group catalysts.
About Au1Cd2Rh1
Au1Cd2Rh1 is a unique ternary intermetallic compound categorized within the platinum-group alloy catalysts. Characterized by its semiconducting electronic nature, this material maintains a robust structural integrity as it sits directly on the thermodynamic convex hull, indicating high stability under standard conditions. Its complex composition allows for specialized interactions in catalytic environments where traditional noble metal catalysts might be less effective. The compound is part of a growing body of research into multi-element alloys that leverage the specific electronic properties of rhodium and gold to tune surface reactivity. Its stability makes it a compelling candidate for fundamental studies in materials science, particularly for applications requiring durable, semiconducting metallic systems in chemical processing.
Key Properties
Cross-validated computational properties for Au1Cd2Rh1, aggregated across 2 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 Au1Cd2Rh1, 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. |
|---|---|---|---|---|---|
| Fm-3m (No. 225) | cubic | 0.00 | 0.0000 | -28.874 | 12.46 |
| Immm (No. 71) | orthorhombic | 0.45 | 1.4751 | -27.399 | 0.96 |
| P4mm (No. 99) | — | — | — | — | — |
| Cmmm (No. 65) | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| Pmm2 (No. 25) | — | — | — | — | — |
| I4/mmm (No. 139) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| Pm (No. 6) | — | — | — | — | — |
Applications
Where Au1Cd2Rh1 is used.
Frequently Asked Questions
Common questions about Au1Cd2Rh1, answered from cross-validated data.
What is Au1Cd2Rh1?
Au1Cd2Rh1 is a stable, semiconducting ternary alloy containing gold, cadmium, and rhodium that serves as a specialized material in the study of platinum-group catalysts.
What is Au1Cd2Rh1 used for?
What is the band gap of Au1Cd2Rh1?
Is Au1Cd2Rh1 a metal, semiconductor, or insulator?
Is Au1Cd2Rh1 thermodynamically stable?
What is the crystal structure of Au1Cd2Rh1?
What is the density of Au1Cd2Rh1?
How many polymorphs of Au1Cd2Rh1 are known?
What elements does Au1Cd2Rh1 contain?
Where does the data for Au1Cd2Rh1 come from?
How It Compares
Within the platinum-group alloy catalysts class.
Within the diverse landscape of platinum-group alloy catalysts, Au1Cd2Rh1 distinguishes itself through its specific ternary stoichiometry compared to binary counterparts like LaRh or GeRu. While many members of this class are metallic, the semiconducting nature of this compound offers a unique electronic profile that sets it apart from more conventional conductors like BaPd, providing researchers with a distinct platform for exploring charge-transfer mechanisms in catalysis.
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).
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