H20K4O36S8
H20K4O36S8 is a thermodynamically stable, insulating compound composed of hydrogen, potassium, oxygen, and sulfur.
About H20K4O36S8
H20K4O36S8 is a complex inorganic compound characterized by its wide-band-gap insulating electronic profile. It is recognized for its thermodynamic stability, sitting securely on the convex hull, which suggests a robust structural arrangement under standard conditions. The material is notable for its structural diversity, with multiple reported configurations across research databases. This versatility makes it an intriguing subject for fundamental studies into complex hydrated sulfate-based systems.
Key Properties
Cross-validated computational properties for H20K4O36S8, 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 H20K4O36S8, 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 | 5.67 | 0.0000 | -5.854 | 2.16 |
| — | — | — | — | — | 1.97 |
| — | — | — | — | — | 1.97 |
| — | — | — | — | — | 1.97 |
| P21/c (No. 14) | — | — | — | — | — |
Applications
Where H20K4O36S8 is used.
Frequently Asked Questions
Common questions about H20K4O36S8, answered from cross-validated data.
What is H20K4O36S8?
H20K4O36S8 is a thermodynamically stable, insulating compound composed of hydrogen, potassium, oxygen, and sulfur.
What is H20K4O36S8 used for?
What is the band gap of H20K4O36S8?
Is H20K4O36S8 a metal, semiconductor, or insulator?
Is H20K4O36S8 thermodynamically stable?
What is the crystal structure of H20K4O36S8?
What is the density of H20K4O36S8?
How many polymorphs of H20K4O36S8 are known?
What elements does H20K4O36S8 contain?
Where does the data for H20K4O36S8 come from?
How It Compares
As a unique inorganic compound, H20K4O36S8 represents an specialized structural arrangement within the broader landscape of hydrated sulfate materials. Its position on the convex hull distinguishes it as a particularly stable candidate for further investigation compared to more transient or metastable phases often found in similar chemical spaces.
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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