CdSO3
cadmium sulfite
Cadmium sulfite is a metastable, wide-band-gap insulating compound that is part of the transparent conducting oxide material class.
About cadmium sulfite
Cadmium sulfite is a metastable inorganic compound that falls within the broader category of transparent conducting oxides. Its electronic character is defined by a wide band gap, which renders it an insulating material under standard conditions. This electronic profile makes it a subject of interest for researchers investigating the fundamental limits of transparency and conductivity in metal-sulfite systems.
Despite its metastability, the compound exhibits significant structural diversity, with multiple reported configurations across various databases. This structural richness highlights the complex nature of cadmium-based oxo-anion materials and provides a foundation for understanding how atomic arrangements influence the physical properties of wide-gap insulators.
Key Properties
Cross-validated computational properties for cadmium sulfite, 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.
Reported Structures
Lowest-energy structures reported for CdSO3, 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 | 3.22 | 0.0962 | -5.620 | 4.09 |
| P21/c (No. 14) | monoclinic | 3.33 | 0.0963 | -5.620 | 4.25 |
| R-3 (No. 148) | trigonal | 3.04 | 0.0991 | -5.618 | 4.24 |
| P21/c (No. 14) | Monoclinic | — | — | — | 4.25 |
| P21/c (No. 14) | Monoclinic | — | — | — | 4.53 |
| P21/c (No. 14) | Monoclinic | — | — | — | 4.34 |
| P21/c (No. 14) | — | — | — | — | — |
| R-3 (No. 148) | Trigonal | — | — | — | 4.24 |
| R-3 (No. 148) | Trigonal | — | — | — | 4.34 |
| P21/c (No. 14) | — | — | — | — | — |
| P21/c (No. 14) | — | — | — | — | — |
| R-3 (No. 148) | Trigonal | — | — | — | 4.53 |
Applications
Where cadmium sulfite is used.
Frequently Asked Questions
Common questions about cadmium sulfite, answered from cross-validated data.
What is CdSO3?
Cadmium sulfite is a metastable, wide-band-gap insulating compound that is part of the transparent conducting oxide material class.
What is CdSO3 used for?
What is the band gap of CdSO3?
Is CdSO3 a metal, semiconductor, or insulator?
Is CdSO3 thermodynamically stable?
What is the crystal structure of CdSO3?
What is the density of CdSO3?
How many polymorphs of CdSO3 are known?
What elements does CdSO3 contain?
Where does the data for CdSO3 come from?
How It Compares
Within the transparent conducting oxides class.
Within the class of transparent conducting oxides, cadmium sulfite occupies a distinct niche compared to more industrially prevalent members like ZnO or BaSnO3. While materials such as ZnO are celebrated for their robust conductivity and stability, cadmium sulfite is characterized by its metastable nature and insulating behavior, serving as a specialized study in the structural variations possible within this oxide-based family.
Related Compounds
Other Transparent Conducting Oxides 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).
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