Europium (II) selenide

Crystal structure
General
Surname	Europium (II) selenide
other names	Europium selenide
Ratio formula	EuSe
Brief description	black-brown solid
External identifiers / databases
EC number	234-662-9
ECHA InfoCard	100,031,499
Wikidata	Q15628212
properties
Molar mass	230.92 g mol −1
Physical state	firmly
density	6.52 g cm −3
safety instructions
GHS labeling of hazardous substances danger
H and P phrases	H: 301 + 331
	P: 260-261-301 + 310-304 + 340-405-501
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Europium (II) selenide is an inorganic chemical compound of europium from the group of selenides .

Extraction and presentation

The europium (II) selenide is made from europium (II) chloride in an excess of selenium in a hydrogen stream at 600 ° C to react . To remove the excess selenium, the hydrogen stream is heated to 820 ° C.

properties

Europium (II) selenide crystallized cubic in the space group Fm 3 m (space group no. 225) with a = 619.5 pm with four formula units per unit cell and acts at a temperature below 7 K ferromagnetic . Template: room group / 225

Individual evidence

↑ ^a ^b ^c ^d W. Klemm, H. Senff: Measurements on two- and four-valued compounds of the rare earths. VIII. Chalcogenides of bivalent europium . In: Journal of Inorganic and General Chemistry . tape 241 , no. 2-3 , 1939, pp. 259-263 , doi : 10.1002 / zaac.19392410212 .
↑ ^a ^b Safety (MSDS) data for EuSe
^ Subhadra, KG; Raghavendra Rao, B .; Sirdeshmukh, DB: X-ray determination of the Debye-Waller factors and Debye temperatures of europium monochalcogenides . In: Pramana . tape 38 , no. 6 , 1992, pp. 681-683 , doi : 10.1007 / BF02875064 .
^ TR McGuire, MW Shafer: Ferromagnetic Europium Compounds . In: Journal of Applied Physics . tape 35 , no. 3 , 1964, pp. 985-988 , doi : 10.1063 / 1.1713568 .

[Klemm-1] W. Klemm, H. Senff: Measurements on two- and four-valued compounds of the rare earths. VIII. Chalcogenides of bivalent europium . In: Journal of Inorganic and General Chemistry . tape 241 , no. 2-3 , 1939, pp. 259-263 , doi : 10.1002 / zaac.19392410212 .

[ltschem-2] Safety (MSDS) data for EuSe

[Subhadra-3] Subhadra, KG; Raghavendra Rao, B .; Sirdeshmukh, DB: X-ray determination of the Debye-Waller factors and Debye temperatures of europium monochalcogenides . In: Pramana . tape 38 , no. 6 , 1992, pp. 681-683 , doi : 10.1007 / BF02875064 .

[McGuire-4] TR McGuire, MW Shafer: Ferromagnetic Europium Compounds . In: Journal of Applied Physics . tape 35 , no. 3 , 1964, pp. 985-988 , doi : 10.1063 / 1.1713568 .