AgRhZn2
AgRhZn2 is a semiconducting ternary alloy containing silver, rhodium, and zinc that is primarily studied for its structural and electronic properties within the field of platinum-group catalysts.
About AgRhZn2
AgRhZn2 is a complex ternary alloy categorized within the platinum-group metal systems. It exhibits semiconducting electronic behavior, which distinguishes it from the typical metallic nature of many related noble metal alloys. This unique electronic profile suggests potential for specialized catalytic activity in chemical synthesis and energy conversion processes.
Despite its interesting electronic properties, the compound is identified as being thermodynamically unstable relative to the ground state. It has been documented across multiple structural databases, reflecting significant interest in its phase space despite the challenges associated with its synthesis and long-term stability in practical applications.
Key Properties
Cross-validated computational properties for AgRhZn2, aggregated across 3 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 AgRhZn2, 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 | 0.20 | 1.7622 | -14.364 | 0.69 |
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Applications
Where AgRhZn2 is used.
Frequently Asked Questions
Common questions about AgRhZn2, answered from cross-validated data.
What is AgRhZn2?
AgRhZn2 is a semiconducting ternary alloy containing silver, rhodium, and zinc that is primarily studied for its structural and electronic properties within the field of platinum-group catalysts.
What is AgRhZn2 used for?
What is the band gap of AgRhZn2?
Is AgRhZn2 a metal, semiconductor, or insulator?
Is AgRhZn2 thermodynamically stable?
What is the crystal structure of AgRhZn2?
What is the density of AgRhZn2?
How many polymorphs of AgRhZn2 are known?
What elements does AgRhZn2 contain?
Where does the data for AgRhZn2 come from?
How It Compares
Within the platinum-group alloy catalysts class.
Within the broader family of platinum-group alloys, AgRhZn2 occupies a niche position compared to more stable, metallic-like counterparts such as LaRh or GeRu. While many members of this class are characterized by high thermodynamic stability, AgRhZn2 stands out as a metastable semiconducting phase, highlighting the structural diversity found when incorporating silver and zinc into rhodium-based frameworks.
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).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- alexandria — Data from alexandria.
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