P2Rh
P2Rh is a stable, semiconducting phosphide of rhodium used in catalytic research.
About P2Rh
P2Rh is a thermodynamically stable inorganic compound belonging to the platinum-group alloy catalyst family. As a semiconducting material, it exhibits distinct electronic properties that make it an intriguing candidate for specialized catalytic processes where specific charge transport characteristics are required.
Its significance is underscored by its presence on the convex hull, indicating high thermodynamic stability. The compound is characterized by a high degree of structural complexity, supported by extensive documentation across multiple materials databases, which facilitates its exploration in advanced chemical synthesis and materials engineering.
Key Properties
Cross-validated computational properties for P2Rh, aggregated across 4 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 P2Rh, 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. |
|---|---|---|---|---|---|
| P21/c (No. 14) | monoclinic | 0.37 | 0.0000 | -14.774 | 6.05 |
| Pc (No. 7) | Monoclinic | — | — | — | 5.60 |
| Cm (No. 8) | Monoclinic | — | — | — | 5.24 |
| Cm (No. 8) | Monoclinic | — | — | — | 7.97 |
| C2/c (No. 15) | Monoclinic | — | — | — | 5.16 |
| Cm (No. 8) | Monoclinic | — | — | — | 6.50 |
| C2/c (No. 15) | Monoclinic | — | — | — | 5.49 |
| C2/c (No. 15) | Monoclinic | — | — | — | 4.80 |
| P-1 (No. 2) | Triclinic | — | — | — | 4.05 |
| C2 (No. 5) | Monoclinic | — | — | — | 3.72 |
| C2 (No. 5) | Monoclinic | — | — | — | 4.45 |
| Pc (No. 7) | Monoclinic | — | — | — | 6.13 |
Applications
Where P2Rh is used.
Frequently Asked Questions
Common questions about P2Rh, answered from cross-validated data.
What is P2Rh?
P2Rh is a stable, semiconducting phosphide of rhodium used in catalytic research.
What is P2Rh used for?
What is the band gap of P2Rh?
Is P2Rh a metal, semiconductor, or insulator?
Is P2Rh thermodynamically stable?
What is the crystal structure of P2Rh?
What is the density of P2Rh?
How many polymorphs of P2Rh are known?
What elements does P2Rh contain?
Where does the data for P2Rh come from?
How It Compares
Within the platinum-group alloy catalysts class.
Within the broader class of platinum-group alloy catalysts, P2Rh occupies a unique position alongside compounds like P3Ru and As2Pt. While many members of this group are metallic, P2Rh stands out for its semiconducting nature, offering a different electronic profile compared to the more conventional metallic conductors like BaPd or LaRh found in the same class.
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).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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