Cerium (III) bromide

Crystal structure
	__ Ce 3+ __ Br -
Crystal system	hexagonal
Space group	P 6 3 / m (No. 176)
Lattice parameters	a = 795.2 pm ; c = 444.4 pm
General
Surname	Cerium (III) bromide
other names	Cerium bromide; Cerium tribromide;
Ratio formula	CeBr 3
Brief description	white hexagonal crystals, hygroscopic; colorless solid (heptahydrate);
External identifiers / databases
ECHA InfoCard	100.034.936
PubChem	292780
Wikidata	Q424790
properties
Molar mass	379.83 g mol −1
Physical state	firmly
density	5.21 g cm −3 (20 ° C)
Melting point	732 ° C
boiling point	1457 ° C or 1705 ° C
solubility	soluble in water and acetone; soluble in water and ethanol (heptahydrate);
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 315-319-335
	P: 261-305 + 351 + 338
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Cerium (III) bromide (CeBr ₃ ) is a salt of the rare earth metal cerium with hydrogen bromide .

Extraction and presentation

Cerium (III) bromide can be obtained by reacting cerium (III) carbonate hydrate with hot concentrated hydrobromic acid, whereby cerium (III) bromide hydrate is formed. The hydrate is converted to the anhydrous form by adding ammonium bromide and heating.

The reaction of cerium (III) hydride with hydrogen bromide at about 500 ° C. is also possible.

{\ displaystyle {\ ce {CeH3 + 3 HBr -> CeBr3 + 3 H2}}}

properties

Cerium (III) bromide forms white hexagonal crystals that are hygroscopic and also occurs as a heptahydrate. It crystallizes in the hexagonal crystal system ( uranium (III) chloride type) with the space group P 6 ₃ / m (space group no. 176) and the lattice constants a = 795.2 pm and c = 444.4 pm. Template: room group / 176

use

Due to its scintillation properties, cerium (III) bromide single crystals can be used as a detector material in gamma ray spectrometers .

Individual evidence

^ ^A ^b W. H. Zachariasen: Crystal Chemical Studies of the 5f-Series of Elements. I. New Structure Types . In: Acta Crystallographica , 1948, 1 , pp. 265-268; doi : 10.1107 / S0365110X48000703 .
↑ ^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. 4-56.
^ ^A ^b ^c Dale L. Perry: Handbook of Inorganic Compounds, Second Edition . Taylor & Francis US, 2011, ISBN 1-4398-1461-9 , pp. 106–107 ( limited preview in Google Book search).
↑ ^a ^b ^c ^d Jean de Ans, Ellen Lax: Taschenbuch Fur Chemiker Und Physiker: Volume 3: Elements, Inorganic ... Springer DE, 1998, ISBN 3-540-60035-3 , p. 370 ( limited preview in Google Book search).
↑ ^a ^b data sheet cerium (III) bromide from Sigma-Aldrich , accessed on March 22, 2020 ( PDF ).
^ R. Mantz: Molten Salts 15, in Memory of Robert Osteryoung: ECS Transactions: Volume 3 . The Electrochemical Society, 2007, ISBN 1-56677-592-2 , pp. 455 ( limited preview in Google Book search).
^ JJ Zuckerman: Inorganic Reactions and Methods, The Formation of Bonds to Hydrogen . John Wiley & Sons, 2009, ISBN 0-470-14536-6 , pp. 3 ( limited preview in Google Book Search).
^ Christoph Janiak, Hans-Jürgen Meyer, Dietrich Gudat, Ralf Alsfasser: Riedel Modern Inorganic Chemistry . Walter de Gruyter, 2012, ISBN 3-11-024901-4 , p. 371 ( limited preview in Google Book search).
↑ World Cup Higgins, A. Churilov, E. van Loef, J. Glodo, M. Squillante, K. Shah: Crystal growth of large diameter LaBr ₃ : Ce and CeBr ₃ . In: Journal of Crystal Growth. 310, 2008, pp. 2085-2089; doi : 10.1016 / j.jcrysgro.2007.12.041 .

[Zachariasen-1] A ^b W. H. Zachariasen: Crystal Chemical Studies of the 5f-Series of Elements. I. New Structure Types . In: Acta Crystallographica , 1948, 1 , pp. 265-268; doi : 10.1107 / S0365110X48000703 .

[CRC_HANDBOOK-2] 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. 4-56.

[Dale_L._Perry-3] A ^b ^c Dale L. Perry: Handbook of Inorganic Compounds, Second Edition . Taylor & Francis US, 2011, ISBN 1-4398-1461-9 , pp. 106–107 ( limited preview in Google Book search).

[Jean_de_Ans,_Ellen_Lax-4] Jean de Ans, Ellen Lax: Taschenbuch Fur Chemiker Und Physiker: Volume 3: Elements, Inorganic ... Springer DE, 1998, ISBN 3-540-60035-3 , p. 370 ( limited preview in Google Book search).

[Sigma-5] ta sheet cerium (III) bromide from Sigma-Aldrich , accessed on March 22, 2020 ( PDF ).

[R._Mantz-6] R. Mantz: Molten Salts 15, in Memory of Robert Osteryoung: ECS Transactions: Volume 3 . The Electrochemical Society, 2007, ISBN 1-56677-592-2 , pp. 455 ( limited preview in Google Book search).

[J._J._Zuckerman-7] JJ Zuckerman: Inorganic Reactions and Methods, The Formation of Bonds to Hydrogen . John Wiley & Sons, 2009, ISBN 0-470-14536-6 , pp. 3 ( limited preview in Google Book Search).

[von_Christoph_Janiak,_Hans-Jürgen_Meyer,_Dietrich_Gudat,_Ralf_Alsfasser-8] Christoph Janiak, Hans-Jürgen Meyer, Dietrich Gudat, Ralf Alsfasser: Riedel Modern Inorganic Chemistry . Walter de Gruyter, 2012, ISBN 3-11-024901-4 , p. 371 ( limited preview in Google Book search).

[DOI10.1016/j.jcrysgro.2007.12.041-9] World Cup Higgins, A. Churilov, E. van Loef, J. Glodo, M. Squillante, K. Shah: Crystal growth of large diameter LaBr ₃ : Ce and CeBr ₃ . In: Journal of Crystal Growth. 310, 2008, pp. 2085-2089; doi : 10.1016 / j.jcrysgro.2007.12.041 .