Rubidium sulfide

Rubidium sulfide

Names
IUPAC name Rubidium sulfide
Identifiers
CAS Number	31083-74-6 N
3D model (JSmol)	Interactive image
PubChem CID	13710577
CompTox Dashboard (EPA)	DTXSID001336474
InChI InChI=1S/2Rb.S/q2*+1;-2 Key: AHKSSQDILPRNLA-UHFFFAOYSA-N
SMILES [S-2].[Rb+].[Rb+]
Properties
Chemical formula	Rb2S
Molar mass	203.00
Appearance	white crystal
Density	2.912 g/cm3
Melting point	530 °C
Solubility in water	hydrolyses to rubidium bisulfide
Solubility in ethanol and glycerol	soluble
Structure
Crystal structure	cubic:anti-fluorite
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	toxic
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H314, H400
Precautionary statements	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). Infobox references

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

Production

Solve hydrogen sulfide into rubidium hydroxide solution,it will produce rubidium bisulfide,then it will produce rubidium sulfide.

$\mathrm {RbOH+H_{2}S\longrightarrow RbHS+H_{2}O}$

$\mathrm {RbHS+RbOH\longrightarrow Rb_{2}S+H_{2}O}$

Properties

Physical properties

Rubidium sulfide is a cubic crystal similar as lithium sulfide,sodium sulfide and potassium sulfide,they were anti-fluorite.Their space groups were $Fm{\bar {3}}m$.Rubidium sulfide have a crystal lattice a =765.0 pm.

Chemical properties

Rubidium sulfide will reacts with sulfur in hydrogen gas to form rubidium pentasulfide（Rb₂S₅）。