Bi8Co4O28S4
Bi8Co4O28S4 is a thermodynamically stable, semiconducting inorganic compound containing bismuth, cobalt, oxygen, and sulfur.
About Bi8Co4O28S4
Bi8Co4O28S4 is a complex inorganic compound that integrates bismuth, cobalt, oxygen, and sulfur into a single crystalline framework. Its status as a thermodynamically stable phase on the convex hull suggests a robust structural arrangement that resists decomposition under standard conditions.
As a semiconducting material, this compound holds interest for researchers investigating the electronic properties of mixed-anion systems. Its unique stoichiometry allows for diverse coordination environments, making it a subject of study for potential functional applications in electronic or optoelectronic devices.
Key Properties
Cross-validated computational properties for Bi8Co4O28S4, 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 Bi8Co4O28S4, 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. |
|---|---|---|---|---|---|
| Pbca (No. 61) | orthorhombic | 2.24 | 0.0000 | -6.629 | 6.78 |
| Pbcm (No. 57) | orthorhombic | 0.06 | 0.0038 | -6.625 | 6.48 |
| Pbcm (No. 57) | — | — | — | — | — |
| Pbca (No. 61) | orthorhombic | — | — | — | 0.85 |
Applications
Where Bi8Co4O28S4 is used.
Frequently Asked Questions
Common questions about Bi8Co4O28S4, answered from cross-validated data.
What is Bi8Co4O28S4?
Bi8Co4O28S4 is a thermodynamically stable, semiconducting inorganic compound containing bismuth, cobalt, oxygen, and sulfur.
What is Bi8Co4O28S4 used for?
What is the band gap of Bi8Co4O28S4?
Is Bi8Co4O28S4 a metal, semiconductor, or insulator?
Is Bi8Co4O28S4 thermodynamically stable?
What is the crystal structure of Bi8Co4O28S4?
What is the density of Bi8Co4O28S4?
How many polymorphs of Bi8Co4O28S4 are known?
What elements does Bi8Co4O28S4 contain?
Where does the data for Bi8Co4O28S4 come from?
How It Compares
As a member of the complex bismuth-cobalt-oxygen-sulfur family, this compound represents a distinct structural arrangement within its chemical class. It is characterized by its inherent thermodynamic stability, which distinguishes it as a reliable candidate for further experimental investigation compared to less stable, metastable phases often found in similar multi-anion systems.
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).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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