Lanthanum bromide

Crystal structure
__  La 3+      __  Br -
Crystal system	hexagonal
Space group	P 6 3 / m (No. 176)
Coordination numbers	La [9], Br [3]
General
Surname	Lanthanum bromide
other names	Lanthanum (III) bromide Lanthanum tribromide
Ratio formula	LaBr 3
Brief description	white hexagonal crystals, hygroscopic
External identifiers / databases
CAS number 13536-79-3 EC number 236-896-7 ECHA InfoCard 100.033.527 PubChem 83563 Wikidata Q410510
properties
Molar mass	378.62 g mol −1
Physical state	firmly
density	5.1 g cm −3 (20 ° C)
Melting point	788 ° C
solubility	soluble in water
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Lanthanum bromide (LaBr ₃ ) is the salt of the rare earth metal lanthanum with hydrogen bromide . It crystallizes hexagonally ( space group P 6 ₃ / m (space group no. 176) , a = 797.13 pm , c = 452.16 pm) and forms colorless crystals that are hygroscopic .

Individual evidence

1. ↑ ^{a b c d} David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Properties of the Elements and Inorganic Compounds, pp. 4-69.
2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
3. ↑ K. Krämer, T. Schleid, M. Schulze, W. Urland, G. Meyer: Three bromides of lanthanum: LaBr ₂ , La ₂ Br ₅ and LaBr ₃ . In: Zeitschrift für Anorganische und Allgemeine Chemie , 1989 , 575 , pp. 61-70 doi : 10.1002 / zaac.19895750109 .