Dysprosium (III) iodide

Crystal structure
__ Dy 3+      __ I -
General
Surname	Dysprosium (III) iodide
other names	Dysprosium triiodide
Ratio formula	DyI 3
Brief description	hygroscopic solid
External identifiers / databases
CAS number 15474-63-2 EC number 239-493-4 ECHA InfoCard 100,035,888 PubChem 519122 Wikidata Q15118238
properties
Molar mass	543.21 g mol −1
Physical state	firmly
Melting point	955 ° C
boiling point	1320 ° C
solubility	soluble in water
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 334-317 P: 285-261-280-302 + 352-321-501
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Dysprosium (III) iodide is an inorganic chemical compound of dysprosium from the group of iodides .

Extraction and presentation

Dysprosium (III) iodide can be obtained by reacting dysprosium with iodine .

${\displaystyle \mathrm {2\ Dy+3\ I_{2}\longrightarrow 2\ DyI_{3}} }$

properties

Dysprosium (III) iodide is a hygroscopic yellow-green flaky solid that is soluble in water. It has a trigonal crystal structure of the bismuth (III) iodide type with the space group R 3 (space group no. 148) .

use

Dysprosium (III) iodide is used in gas discharge lamps to generate white light.

Individual evidence

1. ↑ ^{a b c d e f g} Data sheet Dysprosium (III) iodide, ultra dry, 99.99% (REO) from AlfaAesar, accessed on October 31, 2013 ( PDF )(JavaScript required) .
2. ^ ^{A b} Jean D'Ans, Ellen Lax: Paperback for chemists and physicists . Springer DE, 1997, ISBN 3-540-60035-3 , pp. 442, 1386 ( limited preview in Google Book search).
3. ↑ WebElements: Reaction of dysprosium with the halogens
4. ^ John Emsley: Nature's Building Blocks: An AZ Guide to the Elements . Oxford University Press, 2001, ISBN 0-19-850340-7 , pp. 131 ( limited preview in Google Book search).