Rubidium sulfide
Rubidium sulfide
Names
IUPAC name
Rubidium sulfide
Identifiers
InChI=1S/2Rb.S/q2*+1;-2
Key: AHKSSQDILPRNLA-UHFFFAOYSA-N
Properties
Rb2 S
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
Occupational safety and health (OHS/OSH):
Main hazards
toxic
GHS labelling :
Danger
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
Rubidium oxide Rubidium selenide Rubidium telluride Rubidium polonide
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).
Chemical compound
Rubidium sulfide is an inorganic compound and a salt with the chemical formula Rb2 S. 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]
R
b
O
H
+
H
2
S
⟶ ⟶ -->
R
b
H
S
+
H
2
O
{\displaystyle \mathrm {RbOH+H_{2}S\longrightarrow RbHS+H_{2}O} }
R
b
H
S
+
R
b
O
H
⟶ ⟶ -->
R
b
2
S
+
H
2
O
{\displaystyle \mathrm {RbHS+RbOH\longrightarrow Rb_{2}S+H_{2}O} }
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
F
m
3
¯ ¯ -->
m
{\displaystyle Fm{\bar {3}}m}
. 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 , Rb2 S5 .[4] [5]
References
^ 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 ).
^ 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 ).
^ Wilhelm Blitz, Ernst Wilke-Dörfurt: "Über Sulfide des Rubidiums und Cäsiums" in Zeitschr. f. anorg. Chem. 1906 . 48 , S. 297–317. Volltext
^ a b R. Abegg, F. Auerbach: 'Handbuch der anorganischen Chemie'. Verlag S. Hirzel, Bd. 2, 1908. S. 430.Volltext
^ 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 .