RhNO
RhNO is a semiconducting rhodium-nitrogen-oxygen compound that exists in a metastable state.
About RhNO
RhNO is a semiconducting compound containing rhodium, nitrogen, and oxygen. Its electronic profile suggests potential utility in specialized electronic or catalytic research environments where rhodium-based systems are often evaluated for their unique chemical reactivity.
As a material that sits above the thermodynamic hull, RhNO is considered metastable or unstable under standard conditions. Despite this, it has been identified in multiple structural configurations across research databases, highlighting its significance in theoretical studies of rhodium-nitrogen-oxygen systems.
Key Properties
Cross-validated computational properties for RhNO, aggregated across 2 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 RhNO, 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 | 0.32 | 1.0064 | -6.290 | 4.37 |
| Pmmn (No. 59) | Orthorhombic | — | — | — | 7.55 |
| P-1 (No. 2) | Triclinic | — | — | — | 5.15 |
| P21/m (No. 11) | Monoclinic | — | — | — | 6.34 |
| Pm (No. 6) | Monoclinic | — | — | — | 7.80 |
| Cm (No. 8) | Monoclinic | — | — | — | 5.38 |
| P1 (No. 1) | Triclinic | — | — | — | 6.61 |
| P-1 (No. 2) | Triclinic | — | — | — | 8.77 |
| P-1 (No. 2) | Triclinic | — | — | — | 7.24 |
| P-1 (No. 2) | Triclinic | — | — | — | 6.34 |
| C2/m (No. 12) | Monoclinic | — | — | — | 6.32 |
| C2/m (No. 12) | Monoclinic | — | — | — | 6.99 |
Applications
Where RhNO is used.
Frequently Asked Questions
Common questions about RhNO, answered from cross-validated data.
What is RhNO?
RhNO is a semiconducting rhodium-nitrogen-oxygen compound that exists in a metastable state.
What is RhNO used for?
What is the band gap of RhNO?
Is RhNO a metal, semiconductor, or insulator?
Is RhNO thermodynamically stable?
What is the crystal structure of RhNO?
What is the density of RhNO?
How many polymorphs of RhNO are known?
What elements does RhNO contain?
Where does the data for RhNO come from?
How It Compares
As a unique rhodium-based compound, RhNO represents a specialized entry in materials research. Without direct structural siblings in this specific chemical group, it serves as a distinct case study for understanding the stability and electronic behavior of metastable transition metal nitroxides.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
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