C8N8Se8
C8N8Se8 is a semiconducting carbon-nitrogen-selenium compound that exists in a metastable state.
About C8N8Se8
C8N8Se8 is a complex carbon-nitrogen-selenium compound characterized by semiconducting electronic behavior. Its structural configuration places it in a niche category of materials that are currently being explored for their unique chemical bonding and potential electronic properties.
Due to its position above the thermodynamic hull, this compound is considered metastable, which presents significant challenges and opportunities for synthesis. Its existence in multiple structural forms suggests a complex energy landscape that remains a subject of ongoing investigation in materials science.
Key Properties
Cross-validated computational properties for C8N8Se8, 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 C8N8Se8, 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. |
|---|---|---|---|---|---|
| P212121 (No. 19) | orthorhombic | 2.20 | 0.2958 | -10.833 | 2.67 |
| P212121 (No. 19) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 0.69 |
Frequently Asked Questions
Common questions about C8N8Se8, answered from cross-validated data.
What is C8N8Se8?
C8N8Se8 is a semiconducting carbon-nitrogen-selenium compound that exists in a metastable state.
What is the band gap of C8N8Se8?
Is C8N8Se8 a metal, semiconductor, or insulator?
Is C8N8Se8 thermodynamically stable?
What is the crystal structure of C8N8Se8?
What is the density of C8N8Se8?
How many polymorphs of C8N8Se8 are known?
What elements does C8N8Se8 contain?
Where does the data for C8N8Se8 come from?
How It Compares
As a unique compound without direct structural siblings in this specific class, C8N8Se8 serves as a distinct case study in the synthesis of complex chalcogen-bearing carbon-nitrogen frameworks. Its behavior highlights the broader challenges of stabilizing intricate multi-element systems that deviate from standard thermodynamic ground states.
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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