K4O14S4
K4O14S4 is a stable, insulating inorganic compound composed of potassium, oxygen, and sulfur.
About K4O14S4
K4O14S4 is a complex inorganic compound characterized by its wide-band-gap insulating electronic profile. As a material that resides on the convex hull, it exhibits significant thermodynamic stability, making it a robust subject for structural analysis and fundamental research.
With multiple reported structures across various databases, this compound serves as a key reference point for understanding the interplay between potassium, oxygen, and sulfur in solid-state chemistry. Its insulating nature and stability suggest potential utility in specialized dielectric applications or as a precursor in complex chemical synthesis.
Key Properties
Cross-validated computational properties for K4O14S4, 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 K4O14S4, 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. |
|---|---|---|---|---|---|
| C2/c (No. 15) | monoclinic | 5.22 | 0.0000 | -6.222 | 2.62 |
| — | — | — | — | — | 2.03 |
| — | — | — | — | — | 2.34 |
| — | — | — | — | — | 2.34 |
| C2/c (No. 15) | — | — | — | — | — |
| C2/c (No. 15) | — | — | — | — | — |
| C2/c (No. 15) | — | — | — | — | — |
Applications
Where K4O14S4 is used.
Frequently Asked Questions
Common questions about K4O14S4, answered from cross-validated data.
What is K4O14S4?
K4O14S4 is a stable, insulating inorganic compound composed of potassium, oxygen, and sulfur.
What is K4O14S4 used for?
What is the band gap of K4O14S4?
Is K4O14S4 a metal, semiconductor, or insulator?
Is K4O14S4 thermodynamically stable?
What is the crystal structure of K4O14S4?
What is the density of K4O14S4?
How many polymorphs of K4O14S4 are known?
What elements does K4O14S4 contain?
Where does the data for K4O14S4 come from?
How It Compares
As a thermodynamically stable phase, K4O14S4 represents a well-defined structural configuration within the potassium-oxygen-sulfur chemical space. While it lacks direct structural siblings in this specific dataset, its position on the convex hull highlights its importance as a baseline material for studying the thermodynamic landscape of complex sulfur-based oxyanion compounds.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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