Hg8O28V8
This compound is a complex mercury-vanadium oxide characterized by its unique crystalline structure. It is primarily studied in the field of solid-state chemistry for its potential electronic and magnetic properties.
HgOV
Overview
Key Properties
Cross-validated computational properties for Hg8O28V8, 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.
1.44 eV
Range across DFT structures
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.
0.000 eV/atom
Best (lowest) across sources
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.
On hull (stable)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
4
3 databases, 1 space group
Crystallography
Reported Structures
Lowest-energy structures reported for Hg8O28V8, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 1.44 | 0.0000 | -6.571 | 7.22 |
| Pnma (No. 62) | orthorhombic | 0.00 | 0.9452 | -5.626 | 5.11 |
| Pnma (No. 62) | — | — | — | — | — |
| — | — | — | — | — | 6.89 |
Uses
Applications
Where Hg8O28V8 is used.
Materials science researchSolid-state physics studiesCrystallographic analysis
Reference
Frequently Asked Questions
Common questions about Hg8O28V8, answered from cross-validated data.
What is Hg8O28V8?
This compound is a complex mercury-vanadium oxide characterized by its unique crystalline structure. It is primarily studied in the field of solid-state chemistry for its potential electronic and magnetic properties.
More questions
What is Hg8O28V8 used for?
Hg8O28V8 is used in materials science research, solid-state physics studies, and crystallographic analysis.
What is the band gap of Hg8O28V8?
Hg8O28V8 has a DFT-computed band gap of 1.44 eV across 4 reported structures.
Is Hg8O28V8 a metal, semiconductor, or insulator?
With a band gap up to 1.44 eV it is a semiconductor.
Is Hg8O28V8 thermodynamically stable?
Yes — Hg8O28V8 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of Hg8O28V8?
The lowest-energy reported polymorph of Hg8O28V8 is orthorhombic symmetry, space group Pnma (No. 62).
What is the density of Hg8O28V8?
The computed density of the ground-state structure of Hg8O28V8 is 7.22 g/cm³.
How many polymorphs of Hg8O28V8 are known?
4 structures of Hg8O28V8 are reported across 3 databases, spanning 1 distinct space group.
What elements does Hg8O28V8 contain?
Hg8O28V8 contains Hg, O, and V (3 elements).
Where does the data for Hg8O28V8 come from?
Hg8O28V8 data is cross-referenced from materials_project, aflow, omat24.
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).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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