C11N4
C11N4 is a semiconducting carbon-nitrogen compound characterized by its metastable nature and structural diversity.

About C11N4
C11N4 is a carbon-rich nitrogenous compound that exhibits semiconducting electronic properties. Its structural complexity is highlighted by its presence in multiple databases, reflecting ongoing interest in the synthesis and characterization of nitrogen-doped carbon frameworks.
As a material that sits above the thermodynamic hull, C11N4 is considered metastable. This status makes it a subject of significant interest for researchers exploring high-energy density materials or novel carbon-based architectures that require specific synthesis conditions to stabilize.
Key Properties
Cross-validated computational properties for C11N4, aggregated across 4 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 C11N4, 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. |
|---|---|---|---|---|---|
| P-42m (No. 111) | tetragonal | 2.43 | 0.3109 | -9.418 | 3.56 |
| P222 (No. 16) | orthorhombic | 0.00 | 1.3649 | -8.364 | 3.41 |
| P222 (No. 16) | — | — | — | — | — |
| P-42m (No. 111) | — | — | — | — | — |
| P222 (No. 16) | — | — | — | — | — |
| — | — | — | — | — | 3.42 |
| — | — | — | — | — | 3.37 |
| P-42m (No. 111) | — | — | — | — | — |
Applications
Where C11N4 is used.
Frequently Asked Questions
Common questions about C11N4, answered from cross-validated data.
What is C11N4?
C11N4 is a semiconducting carbon-nitrogen compound characterized by its metastable nature and structural diversity.
What is C11N4 used for?
What is the band gap of C11N4?
Is C11N4 a metal, semiconductor, or insulator?
Is C11N4 thermodynamically stable?
What is the crystal structure of C11N4?
What is the density of C11N4?
How many polymorphs of C11N4 are known?
What elements does C11N4 contain?
Where does the data for C11N4 come from?
How It Compares
As a unique carbon-nitrogen framework, C11N4 represents a specialized niche in materials science where the interplay between carbon bonding and nitrogen incorporation dictates its electronic behavior. Unlike more conventional stable carbon allotropes, its metastable nature positions it as a target for advanced materials design and high-pressure synthesis studies.
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).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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