RbHO
Rubidium hydroxide · Rubidium hydrate
Rubidium hydroxide is a stable, insulating alkali metal compound widely utilized as a strong base in chemical synthesis.
About Rubidium hydroxide
Rubidium hydroxide is a highly reactive inorganic compound composed of rubidium, oxygen, and hydrogen. As a stable member of the alkali hydroxide family, it exhibits wide-gap insulating behavior, reflecting its strong ionic character and structural integrity under standard conditions.
Due to its significant chemical reactivity, it serves as a potent base in various synthetic and laboratory processes. Its stability on the convex hull underscores its importance as a fundamental chemical building block in research involving rubidium-based reagents.
Key Properties
Cross-validated computational properties for Rubidium hydroxide, 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 RbHO. 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 RbHO, 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. |
|---|---|---|---|---|---|
| — | — | 3.88 | 0.0000 | -1.427 | — |
| Cmc21 (No. 36) | orthorhombic | 3.67 | 0.0000 | -1.427 | — |
| Cmc21 (No. 36) | orthorhombic | 3.34 | 0.0000 | -4.620 | 3.65 |
| P21 (No. 4) | monoclinic | 3.35 | 0.0004 | -4.620 | 3.63 |
| — | — | 3.98 | 0.0068 | -1.420 | — |
| — | — | 4.04 | 0.0075 | -1.419 | — |
| — | — | 4.03 | 0.0079 | -1.419 | — |
| — | — | 3.44 | 0.0100 | -1.417 | — |
| Cmc21 (No. 36) | orthorhombic | 3.91 | 0.0127 | -1.414 | — |
| Cmc21 (No. 36) | orthorhombic | 3.91 | 0.0127 | -1.414 | — |
| P21/m (No. 11) | monoclinic | 3.27 | 0.0147 | -1.412 | — |
| P21/m (No. 11) | monoclinic | 3.11 | 0.0188 | -4.602 | 3.40 |
Applications
Where Rubidium hydroxide is used.
Frequently Asked Questions
Common questions about Rubidium hydroxide, answered from cross-validated data.
What is RbHO?
Rubidium hydroxide is a stable, insulating alkali metal compound widely utilized as a strong base in chemical synthesis.
What is RbHO used for?
What is the band gap of RbHO?
Is RbHO a metal, semiconductor, or insulator?
Is RbHO thermodynamically stable?
What is the crystal structure of RbHO?
How many polymorphs of RbHO are known?
What elements does RbHO contain?
Where does the data for RbHO come from?
How It Compares
As a primary alkali hydroxide, this compound serves as a foundational reference material for understanding the behavior of heavy alkali metal hydroxides, representing the characteristic high reactivity and structural stability expected within this chemical class.
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)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
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