Rubidium sulfide

From Wikipedia, the free encyclopedia
Rubidium sulfide
rubidium sulfide
IUPAC name
Rubidium sulfide
3D model (JSmol)
  • InChI=1S/2Rb.S/q2*+1;-2
  • [S-2].[Rb+].[Rb+]
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
Occupational safety and health (OHS/OSH):
Main hazards
GHS labelling:
GHS05: CorrosiveGHS09: Environmental hazard
H314, H400
P260, P264, P273, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, 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).

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.


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


Physical properties[edit]

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 . Rubidium sulfide has a crystal lattice unit cell dimension of = 765.0 pm.[1]

Chemical properties[edit]

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


  1. ^ a b c 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. ^ a b 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.