Rubidium pentasulfide

Crystal structure
	__ Rb + __ S 2 / 5−
General
Surname	Rubidium pentasulfide
Ratio formula	Rb 2 S 5
Brief description	dark red liquid crystals
External identifiers / databases
Wikidata	Q1303560
properties
Molar mass	331.24 g · mol -1
Physical state	firmly
density	2.618 g cm −3
Melting point	225 ° C
solubility	sparingly soluble in ethanol
safety instructions
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Rubidium pentasulfide is a chemical compound made from rubidium and sulfur .

Manufacturing

Rubidium pentasulfide can be made from rubidium sulfide and sulfur in a hydrogen atmosphere .

properties

Physical Properties

Rubidium pentasulfide crystallizes in the orthorhombic crystal system in the space group P 2 ₁ 2 ₁ 2 ₁ (space group number 19) with the lattice parameters a = 683.7 pm, b = 1784.5 pm, c = 663.3 pm, and 4 formula units per Unit cell . Template: room group / 19

Chemical properties

When rubidium pentasulfide is heated in a stream of nitrogen , rubidium trisulfide Rb ₂ S ₃ , which forms red-yellow, strongly hygroscopic crystals and has a melting point of 213 ° C., is formed with the release of vaporized sulfur .

{\ displaystyle \ mathrm {Rb_ {2} S_ {5} \ longrightarrow Rb_ {2} S_ {3} +2 \ S}}

When heated in a stream of hydrogen, with the evolution of hydrogen sulfide, rubidium disulfide , Rb ₂ S ₂ , whose melting point is 420 ° C., is also hygroscopic and, like the trisulfide, forms a monohydrate.

{\ displaystyle \ mathrm {Rb_ {2} S_ {5} +3 \ H_ {2} \ longrightarrow Rb_ {2} S_ {2} +3 \ H_ {2} S}}

Individual evidence

↑ ^a ^b ^c ^d ^e Jean D'Ans, Ellen Lax: Paperback for chemists and physicists. 3. Elements, inorganic compounds and materials, minerals, Volume 3. 4. Edition, Springer, 1997, ISBN 978-3-5406-0035-0 , p. 692 ( limited preview in Google book search).
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
↑ ^a ^b ^c R. Abegg, F. Auerbach: 'Handbuch der inorganic Chemie'. Verlag S. Hirzel, Vol. 2, 1908. P. 430. Full text
^ Wilhelm Biltz, Ernst Wilke-Dörfurt: "About the pentasulfides of rubidium and cesium" in Ber. d. German chem. Ges. 1905 , 38 (1), pp. 123-130. doi : 10.1002 / cber.19050380114
^ ^A ^b Wilhelm Biltz, Ernst Wilke-Dörfurt: "The sulfides of rubidium and cesium", in Zeitschr. f. anorg. Chem. 1906 , 50 (1), pp. 67-81. Full text
↑ Wilhelm Biltz, Ernst Wilke-Dörfurt: "About sulfides of rubidium and cesium" in Zeitschr. f. anorg. Chem. 1906 . 48 , pp. 297-317. Full text

[Lax-1] Jean D'Ans, Ellen Lax: Paperback for chemists and physicists. 3. Elements, inorganic compounds and materials, minerals, Volume 3. 4. Edition, Springer, 1997, ISBN 978-3-5406-0035-0 , p. 692 ( limited preview in Google book search).

[NV-2] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[Abegg-3] R. Abegg, F. Auerbach: 'Handbuch der inorganic Chemie'. Verlag S. Hirzel, Vol. 2, 1908. P. 430. Full text

[Biltz2-4] Wilhelm Biltz, Ernst Wilke-Dörfurt: "About the pentasulfides of rubidium and cesium" in Ber. d. German chem. Ges. 1905 , 38 (1), pp. 123-130. doi : 10.1002 / cber.19050380114

[Biltz1-5] A ^b Wilhelm Biltz, Ernst Wilke-Dörfurt: "The sulfides of rubidium and cesium", in Zeitschr. f. anorg. Chem. 1906 , 50 (1), pp. 67-81. Full text

[Biltz-6] Wilhelm Biltz, Ernst Wilke-Dörfurt: "About sulfides of rubidium and cesium" in Zeitschr. f. anorg. Chem. 1906 . 48 , pp. 297-317. Full text