Al1Cd1Rh2
Al1Cd1Rh2 is a semiconducting ternary intermetallic compound composed of aluminum, cadmium, and rhodium.
About Al1Cd1Rh2
Al1Cd1Rh2 is a complex intermetallic compound belonging to the class of platinum-group alloy catalysts. Characterized by a semiconducting electronic profile, it represents a unique intersection of transition metal chemistry and aluminum-based structural motifs.
While its thermodynamic status suggests it exists above the stability hull, the material remains a subject of interest in materials science due to its structural diversity. It is primarily investigated within fundamental research contexts to understand the electronic behavior of ternary platinum-group alloys.
Key Properties
Cross-validated computational properties for Al1Cd1Rh2, 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 Al1Cd1Rh2, 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. |
|---|---|---|---|---|---|
| Immm (No. 71) | orthorhombic | 0.14 | 2.5177 | -16.848 | 0.67 |
| Fm-3m (No. 225) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Cm (No. 8) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Immm (No. 71) | — | — | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Pmmm (No. 47) | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
Applications
Where Al1Cd1Rh2 is used.
Frequently Asked Questions
Common questions about Al1Cd1Rh2, answered from cross-validated data.
What is Al1Cd1Rh2?
Al1Cd1Rh2 is a semiconducting ternary intermetallic compound composed of aluminum, cadmium, and rhodium.
What is Al1Cd1Rh2 used for?
What is the band gap of Al1Cd1Rh2?
Is Al1Cd1Rh2 a metal, semiconductor, or insulator?
Is Al1Cd1Rh2 thermodynamically stable?
What is the crystal structure of Al1Cd1Rh2?
What is the density of Al1Cd1Rh2?
How many polymorphs of Al1Cd1Rh2 are known?
What elements does Al1Cd1Rh2 contain?
Where does the data for Al1Cd1Rh2 come from?
How It Compares
Within the platinum-group alloy catalysts class.
Unlike more stable or widely utilized members of the platinum-group alloy class such as LaRh or GeRu, Al1Cd1Rh2 is characterized by its relative thermodynamic instability. While siblings like As2Pt or IrSe2 often exhibit well-defined catalytic pathways, this compound serves as a distinct case study in the structural complexity and electronic variance found within this diverse group of materials.
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).
Analyze Al1Cd1Rh2 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →