Lanthanum iodide

Crystal structure
__  La 3+      __  I -
General
Surname	Lanthanum iodide
other names	Lanthanum iodide Lanthanum triiodide
Ratio formula	LaI 3
Brief description	white hexagonal crystals, hygroscopic
External identifiers / databases
CAS number 13813-22-4 EC number 237-465-6 ECHA InfoCard 100.034.045 PubChem 83743 Wikidata Q1805592
properties
Molar mass	519.62 g mol −1
Physical state	firmly
density	5.6 g cm −3 (20 ° C)
Melting point	778 ° 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 (III) iodide (LaI ₃ ) is a salt of the rare earth metal lanthanum with hydrogen iodide . It forms white hexagonal crystals that are hygroscopic . Lanthanum (III) iodide crystallizes in the orthorhombic crystal system in the space group Cmcm (space group no. 63) and the lattice constants a = 437 pm , b = 1401 pm and c = 1004 pm ( PuBr ₃ type ).

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. ^ LB Asprey, TK Keenan, FH Kruse: Preparation and Crystal Data for Lanthanide and Actinide Triiodides. In: Inorganic Chemistry , 3, 8, 1964, pp. 1137-1141, doi: 10.1021 / ic50018a015 .