Cd1Rh2Sb1
Cd1Rh2Sb1 is a metastable, semimetallic intermetallic alloy composed of cadmium, rhodium, and antimony.
About Cd1Rh2Sb1
Cd1Rh2Sb1 is a complex intermetallic compound categorized within the platinum-group alloy catalyst family. Characterized by a semimetallic electronic structure, it exhibits a near-zero-gap behavior that is of significant interest for fundamental studies in condensed matter physics and specialized catalytic applications.
Despite its structural diversity, with numerous reported configurations, the compound is found to be thermodynamically unstable relative to its elemental constituents. This metastability suggests that while it is a subject of intense structural investigation, its synthesis and long-term application require precise control over processing conditions.
Key Properties
Cross-validated computational properties for Cd1Rh2Sb1, 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 Cd1Rh2Sb1, 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 | 0.07 | 2.2345 | -21.568 | 0.85 |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| I4/mmm (No. 139) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
Applications
Where Cd1Rh2Sb1 is used.
Frequently Asked Questions
Common questions about Cd1Rh2Sb1, answered from cross-validated data.
What is Cd1Rh2Sb1?
Cd1Rh2Sb1 is a metastable, semimetallic intermetallic alloy composed of cadmium, rhodium, and antimony.
What is Cd1Rh2Sb1 used for?
What is the band gap of Cd1Rh2Sb1?
Is Cd1Rh2Sb1 a metal, semiconductor, or insulator?
Is Cd1Rh2Sb1 thermodynamically stable?
What is the crystal structure of Cd1Rh2Sb1?
What is the density of Cd1Rh2Sb1?
How many polymorphs of Cd1Rh2Sb1 are known?
What elements does Cd1Rh2Sb1 contain?
Where does the data for Cd1Rh2Sb1 come from?
How It Compares
Within the platinum-group alloy catalysts class.
Within the diverse landscape of platinum-group alloys, Cd1Rh2Sb1 stands out as a more structurally complex and potentially volatile member compared to more robust, stable binary systems like LaRh or BaPd. While many of its siblings are studied for their high-performance catalytic stability, this compound represents a more challenging, metastable phase that pushes the boundaries of current synthetic capabilities.
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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