Na2TeO3
Sodium tellurite · Disodium tellurite
Sodium tellurite is a stable, insulating inorganic salt used primarily as a chemical reagent and in specialized biological applications.
About Sodium tellurite
Sodium tellurite is a thermodynamically stable inorganic compound that exhibits wide-gap insulating behavior. Its structural integrity is well-documented, with multiple reported configurations across various databases, reflecting its importance in materials science research. The compound serves as a primary source of tellurium in chemical synthesis and biological studies. Due to its stable nature, it is frequently utilized in laboratory settings for the preparation of specialized media and as a precursor in the development of advanced materials.
Key Properties
Cross-validated computational properties for Sodium tellurite, 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 Na2TeO3. 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 Na2TeO3, 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. |
|---|---|---|---|---|---|
| P21/c (No. 14) | monoclinic | 3.26 | 0.0000 | -5.294 | 4.32 |
| P21/c (No. 14) | monoclinic | 3.24 | 0.0000 | -1.650 | — |
| — | — | 3.13 | 0.0000 | -1.754 | — |
| — | — | 3.20 | 0.0050 | -1.749 | — |
| — | — | 3.46 | 0.0186 | -1.735 | — |
| — | — | 0.70 | 0.0397 | -1.714 | — |
| — | — | 3.36 | 0.0401 | -1.714 | — |
| — | — | 3.31 | 0.0480 | -1.706 | — |
| — | — | 2.81 | 0.0496 | -1.704 | — |
| — | — | 3.58 | 0.0729 | -1.681 | — |
| P21/c (No. 14) | monoclinic | — | — | — | 4.18 |
| P21/c (No. 14) | monoclinic | — | — | — | 4.14 |
Synthesis Routes
Literature-extracted synthesis procedures targeting Na2TeO3.
Applications
Where Sodium tellurite is used.
Frequently Asked Questions
Common questions about Sodium tellurite, answered from cross-validated data.
What is Na2TeO3?
Sodium tellurite is a stable, insulating inorganic salt used primarily as a chemical reagent and in specialized biological applications.
What is Na2TeO3 used for?
What is the band gap of Na2TeO3?
Is Na2TeO3 a metal, semiconductor, or insulator?
Is Na2TeO3 thermodynamically stable?
What is the crystal structure of Na2TeO3?
What is the density of Na2TeO3?
How many polymorphs of Na2TeO3 are known?
How is Na2TeO3 synthesized?
What elements does Na2TeO3 contain?
Where does the data for Na2TeO3 come from?
How It Compares
As a foundational tellurite salt, Na2TeO3 represents a stable baseline within the broader family of alkali metal tellurites, serving as a critical reference point for understanding the structural and electronic trends of oxyanion-based tellurium compounds.
Data sources & attribution
- 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)
- 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)
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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