Praseodymium(III) bromide

Praseodymium(III) bromide

Names
IUPAC name Tribromopraseodymium
Systematic IUPAC name Praseodymium(III) bromide
Identifiers
CAS Number	13536-53-3
3D model (JSmol)	Interactive image
ChemSpider	75391
ECHA InfoCard	100.033.524
EC Number	236-893-0236-893-0
PubChem CID	83561
CompTox Dashboard (EPA)	DTXSID9065524
InChI InChI=1S/3BrH.Pr/h3*1H;/q;;;+3/p-3 Key: PLKCYEBERAEWDR-UHFFFAOYSA-K
SMILES Br[Pr](Br)Br
Properties
Chemical formula	PrBr3
Molar mass	380.62 g/mol
Appearance	Green crystalline solid
Density	5.28 g/cm^3
Melting point	691 °C (1,276 °F; 964 K)[2] Some sources say 693 °C[1]
Boiling point	1,547 °C (2,817 °F; 1,820 K)[1]
Structure
Crystal structure	Tricapped trigonal prismatic
Coordination geometry	9
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Irritation
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319
Precautionary statements	P261, P280, P305+P351+P338
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Praseodymium(III) bromide is a crystalline compound of one praseodymium atom and three bromine atoms.^[2][3]

Characteristics

Appearance

Praseodymium(III) bromide is a green solid at room temperature.^[2][1] It is usually handled as a powder.

Physical

Praseodymium(III) bromide's molecular weight is 380.62 g.^[2][3][4][5] Praseodymium bromide has a density of 5.28 g/cm².^[6][5]

PrBr₃ adopts the UCl₃ crystal structure.^[7] The praseodymium ions are 9-coordinate and adopt a tricapped trigonal prismatic geometry.^[8] The praseodymium–bromine bond lengths are 3.05 Å and 3.13 Å.^[9]

Chemical

Praseodymium(III) bromide is hygroscopic.^[4] Praseodymium(III) bromide has an oxidation number of 3.^[1]

Hazard

Praseodymium(III) bromide can cause skin irritation (H315/R38), eye irritation (H319/R36), and that breathing dust/fume/gas/mist/vapours/spray of Praseodymium(III) bromide should be avoided (P261/S23), that one should wash hands thoroughly after handling (P264), one should wear protective gloves and clothes clothing, and wear eye protection and face protection (P280/S36/S37/S39), and that if one gets Praseodymium(III) bromide in their eyes, that they should wash their eyes cautiously for several minutes, removing contact lenses if possible (P305).^[10]

References

1. Winter, Mark. "Praseodymium»praseodymium tribromide [WebElements Periodic Table]". www.webelements.com. Retrieved 20 December 2016.
2. "Praseodymium Bromide". American Elements. Retrieved 20 December 2016.
3. "Praseodymium bromide Br3Pr - PubChem". pubchem.ncbi.nlm.nih.gov. Retrieved 20 December 2016.
4. Chambers, Michael. "ChemIDplus - 0013536533 - PLKCYEBERAEWDR-UHFFFAOYSA-K - Praseodymium bromide (PrBr3) - Similar structures search, synonyms, formulas, resource links, and other chemical information". chem.nlm.nih.gov. Retrieved 20 December 2016.
5. Phillips, Sidney L. (1995). Dale L. Perry (ed.). Handbook of inorganic compounds. Boca Raton: CRC Press. p. 323. ISBN 9780849386718.
6. "Information on praseodymium bromide: Etacude.com". chemicals.etacude.com. Retrieved 20 December 2016.
7. Wells, A. F. (1984). Structural Inorganic Chemistry (5th ed.). Oxford University Press. p. 421. ISBN 978-0-19-965763-6.
8. Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1240–1241. ISBN 978-0-08-037941-8.
9. Schmid, B.; Hälg, B.; Furrer, A. (1987). "Structure and crystal fields of PrBr₃ and PrCl₃: A neutron study". J. Appl. Phys. 61 (8): 3426–3428. Bibcode:1987JAP....61.3426S. doi:10.1063/1.338741.
10. "Praseodymium Bromide | ProChem, Inc". prochemonline.com. Retrieved 20 December 2016.