CoSeO4
Cobalt(II) selenate · Cobalt selenate
Cobalt(II) selenate is an inorganic salt composed of cobalt and the selenate anion. It is primarily utilized in specialized chemical synthesis and as a precursor for creating other cobalt-based materials.
Overview
Key Properties
Cross-validated computational properties for Cobalt(II) selenate, 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.
0.30–1.69 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.
12
4 databases, 3 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for CoSeO4, 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. |
|---|---|---|---|---|---|
| Cmcm (No. 63) | orthorhombic | 1.37 | 0.0000 | -6.404 | 4.64 |
| Pnma (No. 62) | orthorhombic | 1.69 | 0.1018 | -6.302 | 4.74 |
| P21/c (No. 14) | monoclinic | 0.30 | 0.4987 | -5.437 | 3.62 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 4.39 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 4.73 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 4.51 |
| Cmcm (No. 63) | — | — | — | — | — |
| Pnma (No. 62) | Orthorhombic | — | — | — | 4.63 |
| P21/c (No. 14) | monoclinic | — | — | — | 0.93 |
| Cmcm (No. 63) | — | — | — | — | — |
| Pnma (No. 62) | Orthorhombic | — | — | — | 4.29 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 4.43 |
Uses
Applications
Where Cobalt(II) selenate is used.
Chemical synthesisMaterials science researchLaboratory reagent
Reference
Frequently Asked Questions
Common questions about Cobalt(II) selenate, answered from cross-validated data.
What is CoSeO4?
Cobalt(II) selenate is an inorganic salt composed of cobalt and the selenate anion. It is primarily utilized in specialized chemical synthesis and as a precursor for creating other cobalt-based materials.
More questions
What is CoSeO4 used for?
Cobalt(II) selenate (CoSeO4) is used in chemical synthesis, materials science research, and laboratory reagent.
What is the band gap of CoSeO4?
Cobalt(II) selenate (CoSeO4) has a DFT-computed band gap of 0.30–1.69 eV across 12 reported structures.
Is CoSeO4 a metal, semiconductor, or insulator?
With a band gap up to 1.69 eV it is a semiconductor.
Is CoSeO4 thermodynamically stable?
Yes — Cobalt(II) selenate (CoSeO4) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of CoSeO4?
The lowest-energy reported polymorph of Cobalt(II) selenate (CoSeO4) is orthorhombic symmetry, space group Cmcm (No. 63).
What is the density of CoSeO4?
The computed density of the ground-state structure of Cobalt(II) selenate (CoSeO4) is 4.64 g/cm³.
How many polymorphs of CoSeO4 are known?
12 structures of CoSeO4 are reported across 4 databases, spanning 3 distinct space groups.
What elements does CoSeO4 contain?
Cobalt(II) selenate (CoSeO4) contains Co, O, and Se (3 elements).
Where does the data for CoSeO4 come from?
CoSeO4 data is cross-referenced from materials_project, mpaloe, jarvis, cod.
Explore
Related Compounds
Other Oxide Oxygen-Evolution 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).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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