K3P
Potassium phosphide · Tripotassium phosphide
Potassium phosphide is an inorganic compound composed of potassium and phosphorus. It is highly reactive and is primarily utilized as a specialized chemical reagent in synthetic chemistry and materials research.
Key Properties
Cross-validated computational properties for Potassium phosphide, 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 K3P, 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. |
|---|---|---|---|---|---|
| P63/mmc (No. 194) | hexagonal | 0.21 | 0.0000 | -7.099 | 1.76 |
| P63/mmc (No. 194) | — | — | — | — | — |
| Pm-3m (No. 221) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 1.73 |
| — | — | — | — | — | 1.93 |
| — | — | — | — | — | 1.93 |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 1.70 |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 1.76 |
Applications
Where Potassium phosphide is used.
Frequently Asked Questions
Common questions about Potassium phosphide, answered from cross-validated data.
What is K3P?
Potassium phosphide is an inorganic compound composed of potassium and phosphorus. It is highly reactive and is primarily utilized as a specialized chemical reagent in synthetic chemistry and materials research.
What is K3P used for?
What is the band gap of K3P?
Is K3P a metal, semiconductor, or insulator?
Is K3P thermodynamically stable?
What is the crystal structure of K3P?
What is the density of K3P?
How many polymorphs of K3P are known?
What elements does K3P contain?
Where does the data for K3P come from?
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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