RbClO4
Rubidium perchlorate
Rubidium perchlorate is a stable, insulating salt composed of rubidium, chlorine, and oxygen that is primarily used in chemical research and analytical applications.
About Rubidium perchlorate
Rubidium perchlorate is a thermodynamically stable inorganic salt characterized by its wide-band-gap insulating electronic structure. As a member of the perchlorate family, it maintains a robust crystalline arrangement that makes it a reliable subject for structural studies. Its stability on the convex hull underscores its chemical resilience under standard conditions. The compound is frequently utilized in laboratory settings where high-purity perchlorate salts are required for specialized synthesis or as a reference material in analytical chemistry. Its well-documented structural diversity across multiple databases highlights its importance in solid-state chemistry and materials research.
Key Properties
Cross-validated computational properties for Rubidium perchlorate, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of RbClO4. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for RbClO4, 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. |
|---|---|---|---|---|---|
| — | — | 6.15 | 0.0000 | -0.946 | — |
| Pnma (No. 62) | orthorhombic | 5.50 | 0.0000 | -4.865 | 3.11 |
| — | — | 5.81 | 0.0039 | -0.942 | — |
| P42/nmc (No. 137) | tetragonal | 5.38 | 0.0122 | -4.852 | 2.98 |
| — | — | 5.64 | 0.0181 | -0.928 | — |
| F-43m (No. 216) | cubic | 5.23 | 0.0252 | -4.839 | 2.89 |
| Pnma (No. 62) | orthorhombic | 6.03 | 0.0530 | -0.652 | — |
| F-43m (No. 216) | cubic | 5.50 | 0.1000 | -0.605 | — |
| C2/c (No. 15) | monoclinic | 5.01 | 0.5540 | -4.311 | 4.37 |
| R3m (No. 160) | trigonal | 0.13 | 0.7920 | 0.087 | — |
| P42/nmc (No. 137) | tetragonal | — | — | — | 2.93 |
| F-43m (No. 216) | cubic | — | — | — | 2.66 |
Applications
Where Rubidium perchlorate is used.
Frequently Asked Questions
Common questions about Rubidium perchlorate, answered from cross-validated data.
What is RbClO4?
Rubidium perchlorate is a stable, insulating salt composed of rubidium, chlorine, and oxygen that is primarily used in chemical research and analytical applications.
What is RbClO4 used for?
What is the band gap of RbClO4?
Is RbClO4 a metal, semiconductor, or insulator?
Is RbClO4 thermodynamically stable?
What is the crystal structure of RbClO4?
What is the density of RbClO4?
How many polymorphs of RbClO4 are known?
What elements does RbClO4 contain?
Where does the data for RbClO4 come from?
How It Compares
As a stable crystalline perchlorate, this compound serves as a fundamental reference point for understanding the behavior of alkali metal oxoanion salts. It represents a classic example of a wide-gap insulator within the broader class of perchlorate materials, providing a baseline for comparing the structural and electronic trends of heavier alkali metal counterparts.
Data sources & attribution
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
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