H8I8O4Sr4
H8I8O4Sr4 is a stable, wide-band-gap insulating compound composed of strontium, oxygen, iodine, and hydrogen.
About H8I8O4Sr4
H8I8O4Sr4 is a complex inorganic compound characterized by its wide-band-gap insulating electronic profile. Its position on the convex hull indicates that it is a thermodynamically stable material, making it a subject of interest for structural studies within its specific chemical system. The compound has been identified across multiple databases, reflecting its presence in contemporary materials research. Its insulating nature suggests potential utility in specialized dielectric or optical applications where electronic isolation is required. As a stable phase, it provides a reliable baseline for understanding the interactions between strontium, oxygen, hydrogen, and iodine in crystalline form.
Key Properties
Cross-validated computational properties for H8I8O4Sr4, 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 H8I8O4Sr4, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 3.64 | 0.0003 | -4.367 | 4.21 |
| Pnma (No. 62) | — | — | — | — | — |
| — | — | — | — | — | 4.01 |
Frequently Asked Questions
Common questions about H8I8O4Sr4, answered from cross-validated data.
What is H8I8O4Sr4?
H8I8O4Sr4 is a stable, wide-band-gap insulating compound composed of strontium, oxygen, iodine, and hydrogen.
What is the band gap of H8I8O4Sr4?
Is H8I8O4Sr4 a metal, semiconductor, or insulator?
Is H8I8O4Sr4 thermodynamically stable?
What is the crystal structure of H8I8O4Sr4?
What is the density of H8I8O4Sr4?
How many polymorphs of H8I8O4Sr4 are known?
What elements does H8I8O4Sr4 contain?
Where does the data for H8I8O4Sr4 come from?
How It Compares
As a thermodynamically stable phase, H8I8O4Sr4 serves as a foundational reference point within its chemical class, representing a well-defined structural arrangement that persists under standard conditions.
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).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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