Chemistry:Rubidium sulfide

From HandWiki
Rubidium sulfide
rubidium sulfide
Names
IUPAC name
Rubidium sulfide
Identifiers
3D model (JSmol)
Properties
Rb2S
Molar mass 203.00
Appearance white crystal
Density 2.912 g/cm3[1]
Melting point 530 °C[2]
hydrolyses to rubidium bisulfide[1]
Solubility in ethanol and glycerol soluble
Structure
cubic:anti-fluorite
Hazards
Main hazards toxic
GHS pictograms GHS05: CorrosiveGHS09: Environmental hazard
GHS Signal word Danger
H314, H400
P260, P264, P273, P280, P301+330+331, P303+361+353, P304+340, P305+351+338, P310, P321, P363, P391, P405, P501
Related compounds
Other anions
Rubidium oxide
Rubidium selenide
Rubidium telluride
Rubidium polonide
Other cations
Lithium sulfide
Sodium sulfide
Potassium sulfide
Caesium sulfide
Francium sulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Rubidium sulfide is an inorganic compound and a salt with the chemical formula Rb2S. It is a white solid with similar properties to other alkali metal sulfides.

Production

By dissolving hydrogen sulfide into rubidium hydroxide solution, it will produce rubidium bisulfide, followed by rubidium sulfide.[3][4]

[math]\displaystyle{ \mathrm{ RbOH + H_2S \longrightarrow RbHS + H_2O } }[/math]
[math]\displaystyle{ \mathrm{ RbHS + RbOH \longrightarrow Rb_2S + H_2O } }[/math]

Properties

Physical properties

Rubidium sulfide has a cubic crystal similar to lithium sulfide, sodium sulfide and potassium sulfide, known as the anti-fluorite structure. Their space groups are [math]\displaystyle{ Fm\bar{3}m }[/math]. Rubidium sulfide has a crystal lattice unit cell dimension of = 765.0 pm.[1]

Chemical properties

Rubidium sulfide reacts with sulfur in hydrogen gas to form rubidium pentasulfide, Rb2S5.[4][5]

References

  1. 1.0 1.1 1.2 Jean D'Ans, Ellen Lax: Taschenbuch für Chemiker und Physiker. 3. Elemente, anorganische Verbindungen und Materialien, Minerale, Band 3. 4. Auflage, Springer, 1997, ISBN:978-3-5406-0035-0, S. 692 ([1], p. 692, at Google Books).
  2. Dale L. Perry, Sidney L. Phillips: Handbook of inorganic compounds. CRC Press, 1995, ISBN:978-0-8493-8671-8, S. 336 ([2], p. 336, at Google Books).
  3. Wilhelm Blitz, Ernst Wilke-Dörfurt: "Über Sulfide des Rubidiums und Cäsiums" in Zeitschr. f. anorg. Chem. 1906. 48, S. 297–317. Volltext
  4. 4.0 4.1 R. Abegg, F. Auerbach: 'Handbuch der anorganischen Chemie'. Verlag S. Hirzel, Bd. 2, 1908. S. 430.Volltext
  5. Wilhelm Blitz, Ernst Wilke-Dörfurt: Ueber die Pentasulfide des Rubidiums und Cäsiums. In Ber. d. dt. chem. Ges. 1905, 38, 1, S. 123–130, doi:10.1002/cber.19050380114.