Rubidium bromide

Rubidium bromide
	Rubidium bromide source ↗
Names
	IUPAC name Rubidium bromide
	Other names Rubidium(I) bromide
Identifiers
CAS Number	7789-39-1 Y;
3D model (JSmol)	Interactive image;
ChemSpider	74217 Y;
ECHA InfoCard	100.029.238
PubChem CID	4670918;
UNII	33CM31XVQQ Y;
CompTox Dashboard (EPA)	DTXSID00894885 ;
	InChI InChI=1S/BrH.Rb/h1H;/q;+1/p-1 Y Key: JAAGVIUFBAHDMA-UHFFFAOYSA-M Y; InChI=1/BrH.Rb/h1H;/q;+1/p-1 Key: JAAGVIUFBAHDMA-REWHXWOFAB;
	SMILES [Rb+].[Br-];
Properties
Chemical formula	RbBr
Molar mass	165.372 g/mol
Appearance	white crystalline solid
Density	3.35 g/cm3
Melting point	682 °C (1,260 °F; 955 K)
Boiling point	1,340 °C (2,440 °F; 1,610 K)
Solubility in water	47.26 g/100 mL (0.5°C); 53.69 g/100 mL (25°C); 67.24 g/100 mL (113.5°C)
Magnetic susceptibility (χ)	−56.4·10−6 cm3/mol
Hazards
Flash point	Non-flammable
Thermochemistry
Enthalpy of fusion (ΔfH⦵fus)	15.50 kJ/mol
Related compounds
Other anions	Rubidium fluoride; Rubidium chloride; Rubidium iodide; Rubidium astatide
Other cations	Lithium bromide; Sodium bromide; Potassium bromide; Caesium bromide; Francium bromide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Rubidium bromide is an inorganic compound with the chemical formula Rb Br. It is a salt of hydrogen bromide. It consists of bromide anions Br⁻ and rubidium cations Rb⁺. It has a NaCl crystal structure, with a lattice constant of 685 picometres.²

Preparation

There are several methods for synthesising rubidium bromide. One involves reacting rubidium hydroxide with hydrobromic acid:

RbOH + HBr → RbBr + H₂O

Another method is to neutralize rubidium carbonate with hydrobromic acid:

Rb₂CO₃ + 2 HBr → 2 RbBr + H₂O + CO₂

References

Perry, Dale L. (2016-04-19). Handbook of Inorganic Compounds. CRC Press. p. 348. ISBN 978-1-4398-1462-8.
G. Chern; J. G. Skofronick; W. P. Brug; S. A. Safron (1989). "Surface phonon modes of the RbBr(001) crystal surface by inelastic He-atom scattering". Phys. Rev. B. 39 (17): 12838–12844. Bibcode:1989PhRvB..3912838C. doi:10.1103/PhysRevB.39.12838. PMID 9948158.