H18N2O26Y8
H18N2O26Y8 is a stable, wide-gap insulating compound composed of yttrium, nitrogen, oxygen, and hydrogen.
About H18N2O26Y8
H18N2O26Y8 is a complex inorganic compound characterized by its insulating electronic nature and high thermodynamic stability. As a material residing on the convex hull, it represents a robust phase that maintains structural integrity under standard conditions.
Its unique composition of yttrium, nitrogen, oxygen, and hydrogen positions it as a specialized candidate for research into advanced dielectric or structural materials. The existence of multiple reported structures across databases highlights its significance in fundamental materials science exploration.
Key Properties
Cross-validated computational properties for H18N2O26Y8, 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 H18N2O26Y8, 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 (No. 4) | monoclinic | 3.34 | 0.0000 | -7.032 | 3.42 |
| P21 (No. 4) | — | — | — | — | — |
| — | — | — | — | — | 3.45 |
Applications
Where H18N2O26Y8 is used.
Frequently Asked Questions
Common questions about H18N2O26Y8, answered from cross-validated data.
What is H18N2O26Y8?
H18N2O26Y8 is a stable, wide-gap insulating compound composed of yttrium, nitrogen, oxygen, and hydrogen.
What is H18N2O26Y8 used for?
What is the band gap of H18N2O26Y8?
Is H18N2O26Y8 a metal, semiconductor, or insulator?
Is H18N2O26Y8 thermodynamically stable?
What is the crystal structure of H18N2O26Y8?
What is the density of H18N2O26Y8?
How many polymorphs of H18N2O26Y8 are known?
What elements does H18N2O26Y8 contain?
Where does the data for H18N2O26Y8 come from?
How It Compares
As a thermodynamically stable phase, H18N2O26Y8 serves as a distinct reference point within its chemical space, offering a well-defined structural configuration that distinguishes it from less stable or transient experimental phases.
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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