Rubidium fluoride

Rubidium fluoride
IUPAC name Rubidium fluoride
Other names Rubidium(I) Fluoride
Identifiers
CAS number	13446-74-7 Y
PubChem	83473
ChemSpider	75311 Y
RTECS number	VL8740000
Jmol-3D images	Image 1
SMILES [Rb+].[F-]
InChI InChI=1S/FH.Rb/h1H;/q;+1/p-1 Y Key: AHLATJUETSFVIM-UHFFFAOYSA-M Y InChI=1/FH.Rb/h1H;/q;+1/p-1 Key: AHLATJUETSFVIM-REWHXWOFAO
Properties
Molecular formula	RbF
Molar mass	104.4662 g/mol
Appearance	white crystalline solid
Density	3.557 g/cm3
Melting point	795 °C (1068 K)
Boiling point	1408 °C (1681 K)
Solubility in water	130.6 g/100 mL (18 °C)
Hazards
EU Index	Not listed
Main hazards	Toxic
Flash point	Non-flammable
Related compounds
Other anions	Rubidium chloride Rubidium bromide Rubidium iodide
Other cations	Lithium fluoride Sodium fluoride Potassium fluoride Caesium fluoride
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Rubidium fluoride (RbF) is the fluoride salt of rubidium. It is a cubic crystal with rock-salt structure.

There are several methods for synthesising rubidium fluoride. One involves reacting rubidium hydroxide with hydrofluoric acid:

RbOH + HF → RbF + H₂O

Another method is to neutralize rubidium carbonate with hydrofluoric acid:

Rb₂(CO₃) + 2HF → 2RbF + H₂O + CO₂

The least used method due to expense of rubidium metal is to react it directly with fluorine gas, as rubidium reacts violently with halogens:

2Rb + F₂ → 2RbF

References

• "Rubidium compounds: rubidium fluoride". WebElements: the periodic table on the web. WebElements. Retrieved 16 November 2011.