Fe2I8Rb4
This compound is a complex halide salt containing iron, iodine, and rubidium. It is primarily studied in academic research settings for its structural properties and potential roles in solid-state chemistry.
FeIRb
Overview
Key Properties
Cross-validated computational properties for Fe2I8Rb4, 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.
0.01 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.
0.018 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.
Near hull (likely stable)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
3
3 databases, 1 space group
Crystallography
Reported Structures
Lowest-energy structures reported for Fe2I8Rb4, 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 (No. 4) | monoclinic | 0.01 | 0.0179 | -3.504 | 3.89 |
| — | — | — | — | — | 3.02 |
| P21 (No. 4) | — | — | — | — | — |
Uses
Applications
Where Fe2I8Rb4 is used.
Solid-state chemistry researchMaterials science studies
Reference
Frequently Asked Questions
Common questions about Fe2I8Rb4, answered from cross-validated data.
What is Fe2I8Rb4?
This compound is a complex halide salt containing iron, iodine, and rubidium. It is primarily studied in academic research settings for its structural properties and potential roles in solid-state chemistry.
More questions
What is Fe2I8Rb4 used for?
Fe2I8Rb4 is used in solid-state chemistry research and materials science studies.
What is the band gap of Fe2I8Rb4?
Fe2I8Rb4 has a DFT-computed band gap of 0.01 eV across 3 reported structures.
Is Fe2I8Rb4 a metal, semiconductor, or insulator?
With a near-zero band gap it behaves as a (semi)metal.
Is Fe2I8Rb4 thermodynamically stable?
Fe2I8Rb4 has a lowest energy above hull of 0.018 eV/atom (near hull (likely stable)).
What is the crystal structure of Fe2I8Rb4?
The lowest-energy reported polymorph of Fe2I8Rb4 is monoclinic symmetry, space group P21 (No. 4).
What is the density of Fe2I8Rb4?
The computed density of the ground-state structure of Fe2I8Rb4 is 3.89 g/cm³.
How many polymorphs of Fe2I8Rb4 are known?
3 structures of Fe2I8Rb4 are reported across 3 databases, spanning 1 distinct space group.
What elements does Fe2I8Rb4 contain?
Fe2I8Rb4 contains Fe, I, and Rb (3 elements).
Where does the data for Fe2I8Rb4 come from?
Fe2I8Rb4 data is cross-referenced from materials_project, omat24, aflow.
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).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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