Promethium (III) bromide

Crystal structure
	__ Pm 3+ __ Br -
Crystal system	orthorhombic
Space group	Ccmm (No. 63, position 2)
Lattice parameters	a = 1265 pm ; b = 408 pm ; c = 912 pm
General
Surname	Promethium (III) bromide
other names	Promethium tribromide
Ratio formula	PmBr 3
Brief description	coral salt
External identifiers / databases
Wikidata	Q1547180
properties
Molar mass	386.71 g mol −1 ( 147 μm)
Physical state	firmly
density	5.45 g cm −3
Melting point	660 ° C
Hazard and safety information
	; Radioactive
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 .

Promethium (III) bromide is a chemical compound made up of the elements promethium and bromine . It has the formula PMBR ₃ and belongs to the class of the bromides .

presentation

Promethium (III) bromide is produced from promethium (III) oxide (Pm ₂ O ₃ ) by heating in a dry HBr stream.

properties

Crystalline anhydrous promethium (III) bromide is a coral red salt with a melting point of 660 ° C. It crystallizes in the orthorhombic crystal system of the PuBr ₃ type with the lattice parameters a = 1265 pm , b = 408 pm and c = 912 pm with four formula units per unit cell and thus a calculated density of 5.45 g cm ⁻³ .

safety instructions

Classifications according to the CLP regulation are not available because these only include chemical hazard and play a completely subordinate role compared to the hazards based on radioactivity . The latter also only applies if the amount of substance involved is relevant.

literature

Fritz Weigel: The chemistry of promethium , in: Fortschr. Chem. Forsch. , 1969 , 12 (4), pp. 539-621 ( doi : 10.1007 / BFb0051097 ).
James E. Huheey: Inorganische Chemie , 1st edition, de Gruyter, Berlin 1988, ISBN 3-11-008163-6 , pp. 873-900.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g Weigel: Die Chemie des Promethiums , p. 590.
^ ^A ^b A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , p. 1942.
↑ The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling. With regard to other hazards, this substance has either not yet been classified or a reliable and citable source has not yet been found.
↑ Gmelin's Handbook of Inorganic Chemistry , System No. 39, Part C 6, pp. 61–62.

[Weigel_590-1] ↑ ^a ^b ^c ^d ^e ^f ^g Weigel: Die Chemie des Promethiums , p. 590.

[HOWI_1942-2] A ^b A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , p. 1942.

[NV-3] The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling. With regard to other hazards, this substance has either not yet been classified or a reliable and citable source has not yet been found.

[4] Gmelin's Handbook of Inorganic Chemistry , System No. 39, Part C 6, pp. 61–62.