Terbium (III) chloride

Crystal structure
__  Tb 3+      __  Cl -
Crystal system	orthorhombic
General
Surname	Terbium (III) chloride
other names	Terbium trichloride
Ratio formula	TbCl 3
Brief description	white hygroscopic powder
External identifiers / databases
CAS number 10042-88-3 13798-24-8 (hexahydrate) PubChem 61458 Wikidata Q410641
properties
Molar mass	265.28 g mol −1
Physical state	firmly
density	4.35 g cm −3 4.35 g cm −3 (hexahydrate)
Melting point	588 ° C
solubility	soluble in water
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 315-319 P: 305 + 351 + 338
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Terbium (III) chloride is a chemical compound from the group of chlorides .

Extraction and presentation

The hexahydrate of terbium (III) chloride can be obtained by reacting terbium (III) oxide with hydrochloric acid .

${\displaystyle \mathrm {Tb_{2}O_{3}+6\ HCl\longrightarrow 2\ TbCl_{3}+3\ H_{2}O} }$

It can also be synthesized directly from the elements.

${\displaystyle \mathrm {2\ Tb+3\ Cl_{2}\longrightarrow 2\ TbCl_{3}} }$

properties

Terbium (III) chloride is a white, hygroscopic powder. It crystallizes in an orthorhombic plutonium (III) bromide crystal structure with the space group Cmcm (space group no. 63) .

use

Terbium (III) chloride is used in the semiconductor industry. The hexahydrate plays an important role as an activator of green phosphors in color TV tubes and is also used in special lasers and as a doping material in solid-state devices.

literature

• ACS Neves, AJM Valente, HD Burrows, ACF Ribeiro, VMM Lobo: Effect of terbium (III) chloride on the micellization properties of sodium decyl- and dodecyl-sulfate solutions (PDF; 720 kB), Journal of Colloid and Interface Science, 2007 , 306, pp. 166-174, doi : 10.1016 / j.jcis.2006.10.061 .

Individual evidence

1. ↑ ^{a b c d} David R. Lide: CRC Handbook of Chemistry and Physics, 87th Edition . 2006, ISBN 978-0-8493-0487-3 , pp. 4-88 .
2. ↑ ^{a b c} data sheet Terbium (III) chloride, anhydrous, powder, 99.99% from Sigma-Aldrich , accessed on April 26, 2012 ( PDF ).
3. ↑ ^{a b c} data sheet Terbium (III) chloride hexahydrate, 99.999% trace metals basis from Sigma-Aldrich , accessed on April 29, 2012 ( PDF ).
4. ↑ XU Lijuan (许丽娟), LI Yanqiu (李艳秋), LI Xia (李 夏): Synthesis, crystal structure and characterization of one-dimension complex constructed by terbium (III) and 2-iodobenzoate . In: Journal of Rare Earths . 27, No. 3, 2009, p. 372. doi : 10.1016 / S1002-0721 (08) 60253-7 .
5. ↑ Web elements: Terbium
6. ^ Peter Paetzold: Chemistry: An introduction . Walter de Gruyter, 2009, ISBN 978-3-11-021135-1 , p. 204 ( limited preview in Google Book search).
7. ^ G. Ferguson, J. Trotter: Structure Reports for 1985, Volume 52a . Springer, 1986, ISBN 978-90-277-2385-7 , pp. 130 ( limited preview in Google Book search).
8. ↑ Americanelements: Terbium Chloride
9. ↑ METALL RARE EARTH LIMITED: Terbium chloride