Pb2WO5
Pb2WO5 is a metastable lead tungsten oxide that functions as a wide-gap insulator.
About Pb2WO5
Pb2WO5 is a complex oxide composed of lead, tungsten, and oxygen. As a wide-gap insulating material, it exhibits distinct electronic properties that differentiate it from typical metallic conductors, making it a subject of interest for fundamental solid-state studies.
This compound is characterized by its metastable nature, which presents unique challenges and opportunities for synthesis and structural characterization. With multiple reported structures across various databases, it remains a significant entry for researchers investigating the phase stability of lead-based ternary oxides.
Key Properties
Cross-validated computational properties for Pb2WO5, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of Pb2WO5. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for Pb2WO5, 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. |
|---|---|---|---|---|---|
| — | — | 3.03 | 0.0000 | -1.982 | — |
| C2/m (No. 12) | monoclinic | 3.07 | 0.0331 | -7.515 | 7.48 |
| — | — | 2.13 | 0.0537 | -1.929 | — |
| C2/m (No. 12) | monoclinic | 0.77 | 0.0695 | -1.856 | — |
| C2/m (No. 12) | monoclinic | — | — | — | 8.21 |
| C2/m (No. 12) | monoclinic | — | — | — | 7.48 |
| C2/m (No. 12) | monoclinic | — | — | — | 7.68 |
Frequently Asked Questions
Common questions about Pb2WO5, answered from cross-validated data.
What is Pb2WO5?
Pb2WO5 is a metastable lead tungsten oxide that functions as a wide-gap insulator.
What is the band gap of Pb2WO5?
Is Pb2WO5 a metal, semiconductor, or insulator?
Is Pb2WO5 thermodynamically stable?
What is the crystal structure of Pb2WO5?
What is the density of Pb2WO5?
How many polymorphs of Pb2WO5 are known?
What elements does Pb2WO5 contain?
Where does the data for Pb2WO5 come from?
How It Compares
As a member of the lead tungsten oxide family, Pb2WO5 occupies a niche position defined by its specific stoichiometry and metastable thermodynamic state. It serves as a critical reference point for understanding how the integration of heavy metal cations like lead influences the structural landscape of tungsten-based oxides.
Data sources & attribution
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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