Europium (II) hydroxide

General
Surname	Europium (II) hydroxide
Molecular formula	Eu (OH) 2
Brief description	yellow solid
External identifiers / databases
PubChem	101288893
ChemSpider	24769659
Wikidata	Q15628187
properties
Molar mass	185.98 g mol −1
Physical state	firmly
density	4.467 g cm −3
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 .

Europium (II) hydroxide is a chemical compound of europium from the group of hydroxides . It is in the form of its hydrate Eu (OH) ₂ · H ₂ O.

Extraction and presentation

Europium (II) hydroxide is formed when europium (II, III) oxide decomposes in humid air in addition to europium (III) hydroxide . It is created directly from the reaction of europium with water in sodium hydroxide solution .

{\ displaystyle \ mathrm {Eu + 3 \ H_ {2} O \ longrightarrow Eu (OH) _ {2} \ cdot H_ {2} O + H_ {2}}}

properties

Europium (II) hydroxide hydrate is a bright yellow solid that slowly decomposes into europium (III) hydroxide. This also takes place under protective gas. It has an orthorhombic crystal structure with the space group P 2 ₁am (space group no. 26, position 4) and the lattice parameters a = 670.1 pm, b = 619.7 pm, c = 365.2 pm. Template: room group / 26.4

Individual evidence

↑ ^a ^b ^c ^d ^e Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 1091.
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
↑ H. Bärnighausen: Lattice constants and space group of the isotypic compounds Eu (OH) 2 H2O, Sr (OH) 2 H2O and Ba (OH) 2 H2O. In: Journal of Inorganic and General Chemistry. 342, 1966, pp. 233-239, doi : 10.1002 / zaac.19663420503 .

[brauer-1] Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 1091.

[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.

[DOI10.1002/zaac.19663420503-3] H. Bärnighausen: Lattice constants and space group of the isotypic compounds Eu (OH) 2 H2O, Sr (OH) 2 H2O and Ba (OH) 2 H2O. In: Journal of Inorganic and General Chemistry. 342, 1966, pp. 233-239, doi : 10.1002 / zaac.19663420503 .