RbSb2
This compound is a binary intermetallic material composed of rubidium and antimony. It is primarily utilized in fundamental materials science research to study the electronic and structural properties of alkali metal antimonides.
RbSb
Overview
Key Properties
Cross-validated computational properties for RbSb2, 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.
0.27 eV
Range across DFT structures
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.
0.000 eV/atom
Best (lowest) across sources
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.
On hull (stable)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
8
3 databases, 2 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for RbSb2, 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. |
|---|---|---|---|---|---|
| C2/m (No. 12) | monoclinic | 0.27 | 0.0000 | -3.489 | 4.37 |
| C2/m (No. 12) | — | — | — | — | — |
| P-1 (No. 2) | Triclinic | — | — | — | 4.01 |
| P-1 (No. 2) | Triclinic | — | — | — | 3.96 |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.41 |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.38 |
| P-1 (No. 2) | Triclinic | — | — | — | 3.85 |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.29 |
Uses
Applications
Where RbSb2 is used.
Solid-state physics researchMaterials characterization studies
Reference
Frequently Asked Questions
Common questions about RbSb2, answered from cross-validated data.
What is RbSb2?
This compound is a binary intermetallic material composed of rubidium and antimony. It is primarily utilized in fundamental materials science research to study the electronic and structural properties of alkali metal antimonides.
More questions
What is RbSb2 used for?
RbSb2 is used in solid-state physics research and materials characterization studies.
What is the band gap of RbSb2?
RbSb2 has a DFT-computed band gap of 0.27 eV across 8 reported structures.
Is RbSb2 a metal, semiconductor, or insulator?
With a band gap up to 0.27 eV it is a semiconductor.
Is RbSb2 thermodynamically stable?
Yes — RbSb2 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of RbSb2?
The lowest-energy reported polymorph of RbSb2 is monoclinic symmetry, space group C2/m (No. 12).
What is the density of RbSb2?
The computed density of the ground-state structure of RbSb2 is 4.37 g/cm³.
How many polymorphs of RbSb2 are known?
8 structures of RbSb2 are reported across 3 databases, spanning 2 distinct space groups.
What elements does RbSb2 contain?
RbSb2 contains Rb and Sb (2 elements).
Where does the data for RbSb2 come from?
RbSb2 data is cross-referenced from materials_project, jarvis, mpaloe.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
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