Thulium (II) bromide

Crystal structure
__ Tm 2+      __ Br -
General
Surname	Thulium (II) bromide
other names	Thulium dibromide
Ratio formula	TmBr 2
Brief description	dark green solid
External identifiers / databases
CAS number 64171-97-7 Wikidata Q16857499
properties
Molar mass	328.74 g mol −1
Physical state	firmly
Melting point	619 ° C
safety instructions
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 .

Thulium (II) bromide is an inorganic chemical compound of thulium from the group of bromides .

Extraction and presentation

Thulium (II) bromide can be obtained by reducing thulium (III) bromide with thulium in a vacuum at 800 to 900 ° C.

${\displaystyle \mathrm {Tm+2\ TmBr_{3}\longrightarrow 3\ TmBr_{2}} }$

properties

Thulium (II) bromide is a dark green solid. The connection is extremely hygroscopic and can only be stored and handled under carefully dried protective gas or in a high vacuum. In air, thulium (II) bromide changes into hydrates with absorption of moisture , but these are unstable and more or less quickly convert into oxide bromides with evolution of hydrogen . These processes take place much faster with water. The compound has a crystal structure of strontium iodide type.

Individual evidence

1. ↑ ^{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. 1081.
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.