Scandium bromide

Crystal structure
__ Sc 3+      __ Br -
General
Surname	Scandium bromide
other names	Scandium (III) bromide Scandium tribromide
Ratio formula	ScBr 3
Brief description	colorless solid
External identifiers / databases
CAS number 13465-59-3 307496-17-9 (hydrate) EC number 236-699-6 ECHA InfoCard 100.033.349 PubChem 83495 Wikidata Q2228902
properties
Molar mass	284.67 g mol −1
Physical state	firmly
density	3.914 g cm −3
Melting point	970 ° C
solubility	soluble in water
safety instructions
GHS labeling of hazardous substances no GHS pictograms H and P phrases H: no H-phrases P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Scandium bromide is an inorganic chemical compound of scandium from the group of bromides .

Extraction and presentation

Scandium bromide can be obtained by directly reacting scandium with bromine .

${\displaystyle \mathrm {2\ Sc+3\ Br_{2}\longrightarrow 2\ ScBr_{3}} }$

The scandium bromide hydrate is obtained from the oxide by reaction with hydrobromic acid .:

${\displaystyle \mathrm {Sc_{2}O_{3}+6\ HBr+9\ H_{2}O\longrightarrow 2\ ScBr_{3}\cdot 6\ H_{2}O} }$

The anhydrous scandium bromide can in turn be obtained from this by reacting with an excess of ammonium bromide.

${\displaystyle \mathrm {ScBr_{3}\cdot n\ H_{2}O+m\ NH_{4}Br\longrightarrow 2\ ScBr_{3}+m\ NH_{3}+m\ HBr+n\ H_{2}O} }$

properties

Scandium bromide is a colorless solid that is soluble in water. It has a trigonal crystal system similar to that of bismuth triiodide with the space group R 3 (space group no. 148) .

Individual evidence

1. ↑ ^{a b c d} data sheet Scandium (III) bromide, anhydrous, powder, ≥99.99% trace metals basis from Sigma-Aldrich , accessed on November 4, 2012 ( PDF ).
2. ^ ^{A b c} Jean D'Ans, Ellen Lax: Pocket book for chemists and physicists . Springer DE, 1997, ISBN 3-540-60035-3 , pp. 718 ( limited preview in Google Book search).
3. ^ ^{A b} Catherine E. Housecroft, AG Sharpe: Inorganic Chemistry . Pearson Education, 2005, ISBN 0-13-039913-2 , pp. 598 ( limited preview in Google Book search).
4. ↑ Web elements: WebElements Periodic Table of the Elements | Scandium | chemical reaction data
5. ↑ ^{a b} Georg Brauer (Ed.), With the collaboration of Marianne Baudler u a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3 , pp. 1074-1077.