Na1Pd2Sb1
Na1Pd2Sb1 is a semiconducting ternary intermetallic compound composed of sodium, palladium, and antimony that exhibits metastable thermodynamic characteristics.
About Na1Pd2Sb1
Na1Pd2Sb1 is a complex intermetallic compound categorized within the platinum-group alloy catalysts. As a semiconducting material, it represents a specialized niche in the study of ternary systems involving alkali metals and precious metals. Its electronic character distinguishes it from typical metallic alloys, suggesting unique potential in catalytic surface interactions.
Despite its existence in structural databases, this compound is identified as being above the thermodynamic hull, indicating that it is likely unstable under standard conditions. Its presence in research highlights the ongoing exploration of metastable phases that may offer unusual chemical reactivity or structural configurations for advanced material synthesis.
Key Properties
Cross-validated computational properties for Na1Pd2Sb1, 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 Na1Pd2Sb1, 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 | 0.17 | 1.8137 | -17.453 | 0.59 |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Pm (No. 6) | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
| I4/mmm (No. 139) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
Applications
Where Na1Pd2Sb1 is used.
Frequently Asked Questions
Common questions about Na1Pd2Sb1, answered from cross-validated data.
What is Na1Pd2Sb1?
Na1Pd2Sb1 is a semiconducting ternary intermetallic compound composed of sodium, palladium, and antimony that exhibits metastable thermodynamic characteristics.
What is Na1Pd2Sb1 used for?
What is the band gap of Na1Pd2Sb1?
Is Na1Pd2Sb1 a metal, semiconductor, or insulator?
Is Na1Pd2Sb1 thermodynamically stable?
What is the crystal structure of Na1Pd2Sb1?
What is the density of Na1Pd2Sb1?
How many polymorphs of Na1Pd2Sb1 are known?
What elements does Na1Pd2Sb1 contain?
Where does the data for Na1Pd2Sb1 come from?
How It Compares
Within the platinum-group alloy catalysts class.
Within the diverse family of platinum-group alloys, Na1Pd2Sb1 occupies a distinct position compared to more stable, conventional phases like As2Pt or GeRu. While many siblings in this class exhibit robust metallic bonding and high thermodynamic stability, this compound's semiconducting nature and metastable status make it a subject of fundamental interest rather than a standard industrial catalyst.
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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