C2O8Tm2
thulium oxalate · thulium(III) oxalate
Thulium oxalate is a semiconducting rare-earth compound primarily used as a chemical precursor for the production of thulium-based oxides and advanced materials.
About thulium oxalate
Thulium oxalate is a rare-earth metal organic compound characterized by its semiconducting electronic nature. As a metastable phase, it serves as a critical intermediate in the chemical processing of thulium, often utilized as a precursor for the controlled thermal decomposition into high-purity thulium oxides.
Its structural diversity, represented by multiple reported configurations, highlights its utility in materials science research. By providing a stable chemical pathway for the synthesis of complex thulium-containing ceramics and phosphors, this compound plays a vital role in the development of optical and electronic materials.
Key Properties
Cross-validated computational properties for thulium oxalate, 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 C2O8Tm2, 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. |
|---|---|---|---|---|---|
| P42/nmc (No. 137) | tetragonal | 0.49 | 0.0476 | -8.125 | 4.64 |
| P212121 (No. 19) | orthorhombic | 0.78 | 0.0967 | -8.076 | 5.52 |
| — | — | — | — | — | 5.34 |
| No. 0 | unknown | — | — | — | 1.45 |
Applications
Where thulium oxalate is used.
Patent Landscape
1 patent reference C2O8Tm2 or close compositional variants.
| Patent | Title | Assignee | Granted |
|---|---|---|---|
| 8248032 | Charging system for prioritizing load consumption in a notebook computer | — | — |
Frequently Asked Questions
Common questions about thulium oxalate, answered from cross-validated data.
What is C2O8Tm2?
Thulium oxalate is a semiconducting rare-earth compound primarily used as a chemical precursor for the production of thulium-based oxides and advanced materials.
What is C2O8Tm2 used for?
What is the band gap of C2O8Tm2?
Is C2O8Tm2 a metal, semiconductor, or insulator?
Is C2O8Tm2 thermodynamically stable?
What is the crystal structure of C2O8Tm2?
What is the density of C2O8Tm2?
How many polymorphs of C2O8Tm2 are known?
What elements does C2O8Tm2 contain?
Where does the data for C2O8Tm2 come from?
How It Compares
As a specialized rare-earth oxalate, this compound functions as a foundational precursor within its chemical class, facilitating the precise synthesis of functional thulium-based materials that require high purity and controlled morphology.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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