Rhodium (III) bromide

Crystal structure
	__ Rh 3+ __ Br -
General
Surname	Rhodium (III) bromide
other names	Rhodium tribromide
Ratio formula	RhBr 3
Brief description	hygroscopic dark solid (hydrate)
External identifiers / databases
EC number	239-687-9
ECHA InfoCard	100.036.064
PubChem	85020
ChemSpider	76689
Wikidata	Q4096893
properties
Molar mass	342.62 g mol −1
Physical state	firmly
density	5.56 g cm −3
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 315-319-335
	P: 261-305 + 351 + 338-302 + 352-321-405-501
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Rhodium (III) bromide is an inorganic chemical compound of rhodium from the group of bromides .

Extraction and presentation

Rhodium (III) bromide can be obtained by reacting rhodium with bromine at 450 ° C. or with a mixture of bromine and hydrobromic acid.

{\ displaystyle \ mathrm {2 \ Rh + 3 \ Br_ {2} \ longrightarrow 2 \ RhBr_ {3}}}

properties

Rhodium (III) bromide hydrate is a hygroscopic dark solid that is soluble in water. The anhydrate is a solid in the form of red-brown, extremely thin crystal flakes, which is split into the elements above 800 ° C. It is insoluble in water, acids and organic solvents and has a monoclinic crystal structure with the space group C 2 / m (space group no.12) and the lattice parameters a = 627 pm, b = 1085 pm, c = 635 pm and β = 109 , 0 °. This corresponds to the crystal structure of yttrium (III) chloride . Template: room group / 12

Individual evidence

↑ ^a ^b ^c ^d ^e data sheet Rhodium (III) bromide hydrate from AlfaAesar, accessed on September 1, 2013 ( PDF )(JavaScript required) .
↑ ^a ^b ^c Georg Brauer (Ed.) U. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume III, Ferdinand Enke, Stuttgart 1981, ISBN 3-432-87823-0 , p. 1739.
^ ^A ^b Erwin Riedel, Christoph Janiak: Inorganische Chemie . Walter de Gruyter, 2011, ISBN 3-11-022566-2 , p. 876 ( limited preview in Google Book search).
^ Peter Paetzold: Chemistry: An introduction . Walter de Gruyter, 2009, ISBN 3-11-021135-1 , p. 204 ( limited preview in Google Book search).

[Alfa-1] ↑ ^a ^b ^c ^d ^e data sheet Rhodium (III) bromide hydrate from AlfaAesar, accessed on September 1, 2013 ( PDF )(JavaScript required) .

[brauer-2] Georg Brauer (Ed.) U. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume III, Ferdinand Enke, Stuttgart 1981, ISBN 3-432-87823-0 , p. 1739.

[Erwin_Riedel,_Christoph_Janiak-3] A ^b Erwin Riedel, Christoph Janiak: Inorganische Chemie . Walter de Gruyter, 2011, ISBN 3-11-022566-2 , p. 876 ( limited preview in Google Book search).

[Peter_Paetzold-4] Peter Paetzold: Chemistry: An introduction . Walter de Gruyter, 2009, ISBN 3-11-021135-1 , p. 204 ( limited preview in Google Book search).