Lutetium (III) iodide

Crystal structure
__ Lu 3+      __ I -
General
Surname	Lutetium (III) iodide
other names	Lutetium triiodide
Ratio formula	LuI 3
Brief description	brown solid
External identifiers / databases
CAS number 13813-45-1 EC number 237-475-0 ECHA InfoCard 100.034.054 PubChem 83752 Wikidata Q16833216
properties
Molar mass	555.68 g mol −1
Physical state	firmly
density	5.60 g cm −3
Melting point	1050 ° C
boiling point	1210 ° C
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 315-319-335 P: 261-280-305 + 351 + 338-304 + 340-405-501
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Lutetium (III) iodide is an inorganic chemical compound of lutetium from the group of iodides .

Extraction and presentation

Lutetium (III) iodide can be obtained by reacting lutetium with iodine .

${\displaystyle \mathrm {2\ Lu+3\ I_{2}\longrightarrow LuI_{3}} }$

It is also possible to display it by reacting lutetium with mercury (II) iodide in a vacuum at 500 ° C.

${\displaystyle \mathrm {2\ Lu+3\ HgI_{2}\longrightarrow 2\ LuI_{3}+3\ Hg} }$

Lutetium (III) iodide hydrate can be converted to the anhydrate by dehydration with a large excess of ammonium iodide (as the compound is prone to hydrolysis ).

properties

Lutetium (III) iodide is a brown, strongly hygroscopic solid with a crystal structure of the bismuth (III) iodide type. In air, it quickly absorbs moisture and forms hydrates. The corresponding oxide iodide is also easily formed at elevated temperatures.

Individual evidence

1. ↑ ^{a b c d e f} Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 1077.
2. ↑ ^{a b c d e} data sheet Lutetium (III) iodide, ultra dry, 99.9% (REO) from AlfaAesar, accessed on April 26, 2014 ( PDF )(JavaScript required) .