Antimony (III) bromide

Crystal structure
Sb 3+ : __   /   Br - : __
Crystal system	orthorhombic
Space group	α-modification: P 2 1 2 1 2 1 (No. 19) β-modification: Pbnm (No. 62, position 3)
Lattice parameters	α modification: a = 10.12 Å, b = 12.30 Å, c = 4.42 Å β modification: a = 6.68 Å, b = 8.25 Å, c = 9.96 Å
General
Surname	Antimony (III) bromide
other names	Antimony tribromide
Ratio formula	SbBr 3
Brief description	white solid
External identifiers / databases
CAS number 7789-61-9 EC number 232-179-8 ECHA InfoCard 100.029.254 PubChem 24615 Wikidata Q419727
properties
Molar mass	361.48 g mol −1
Physical state	firmly
density	4.15 g cm −3
Melting point	97 ° C
boiling point	280 ° C
solubility	decomposes in water soluble in hydrochloric acid, hydrobromic acid, acetone, benzene, chloroform
Refractive index	1.74 (20 ° C)
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 302-332-411 P: 261-273-304 + 340-501
Thermodynamic properties
ΔH f 0	−259.4 kJ mol −1
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Antimony (III) bromide is a chemical compound from the group of antimony compounds and bromides .

Extraction and presentation

Antimony (III) bromide can be obtained by reacting antimony with bromine .

${\displaystyle {\ce {2Sb + 3Br2 -> 2SbBr3}}}$

The reaction of antimony trichloride with boron tribromide is also possible .

properties

Antimony (III) bromide is a white, hygroscopic, non-flammable solid that decomposes in water.

${\displaystyle {\ce {2SbBr3 + 3H2O -> Sb2O3 + 6HBr}}}$

When melted, it is a light amber liquid. It occurs in two different modifications: The α-form crystallizes in the orthorhombic space group P 2 ₁ 2 ₁ 2 ₁ (space group number 19) with the lattice constants a = 10.12 Å, b = 12.30 Å, c = 4.42 Å, while the β-form crystallizes in the likewise orthorhombic space group Pbnm (space group no. 62, position 3) with the lattice constants a = 6.68 Å, b = 8.25 Å, c = 9.96 Å .

use

Antimony (III) bromide is used to make other antimony salts.

Individual evidence

1. ↑ ^{a b c d e f g h} Entry on antimony (III) bromide in the GESTIS substance database of the IFA , accessed on February 1, 2016(JavaScript required) .
2. ↑ ^{a b} Entry on ANTIMONY TRIBROMIDE in the Hazardous Substances Data Bank , accessed on July 29, 2012.
3. ^ AF Holleman , N. Wiberg : Inorganische Chemie . 103rd edition. Volume 1: Basics and main group elements. Walter de Gruyter, Berlin / Boston 2016, ISBN 978-3-11-049585-0 , p. 952 (reading sample: Part A - Basics of the chemistry of hydrogen. Google book search ).
4. ↑ ^{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 , p. 591.
5. ^ AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 817.
6. ↑ DW Cushen, R. Hulme: The crystal and molecular structure of antimony tribromide . α-Antimony Tribromide. In: Journal of the Chemical Society . No. 0 , 1964, p. 4162-4166 , doi : 10.1039 / JR9640004162 .
7. ↑ DW Cushen, R. Hulme: The crystal and molecular structure of antimony tribromide . β-Antimony Tribromide. In: Journal of the Chemical Society . No. 0 , 1962, p. 2218-2222 , doi : 10.1039 / JR9620002218 .
8. ↑ Richard P. Pohanish: Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens . 2011, ISBN 978-1-4377-7869-4 ( page 250 in the Google book search).