Holmium (III) bromide

Crystal structure
__ Ho 3+      __ Br -
General
Surname	Holmium (III) bromide
other names	Holmium tribromide
Ratio formula	HoBr 3
Brief description	yellow solid
External identifiers / databases
CAS number 13825-76-8 EC number 237-524-6 ECHA InfoCard 100.034.099 PubChem 83760 Wikidata Q15628262
properties
Molar mass	404.64 g mol −1
Physical state	firmly
density	4.85 g cm −3 (25 ° C)
Melting point	919 ° C
boiling point	1470 ° C
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 315-319-335 P: 261-305 + 351 + 338
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Holmium (III) bromide is an inorganic chemical compound of holmium from the group of bromides .

Extraction and presentation

Holmium (III) bromide can be obtained by reacting holmium with hydrogen bromide .

${\displaystyle \mathrm {2\ Ho+6\ HBr\longrightarrow 2\ HoBr_{3}+3\ H_{2}} }$

Holmium (III) bromide hydrate can be converted into the anhydrate by dehydration with ammonium bromide .

properties

Holmium (III) bromide is a yellow, strongly hygroscopic solid with a crystal structure of the iron (III) bromide 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. 1077.
2. ↑ ^{a b c d e} data sheet Holmium (III) bromide, anhydrous, powder, 99.99% trace metals basis from Sigma-Aldrich , accessed on April 24, 2014 ( PDF ).