Neodymium (III) fluoride

Crystal structure
__ Nd 3+      __ F -
Crystal system	hexagonal
Space group	P 6 3 / mcm (No. 193)
Coordination numbers	Nd [9], F [3]
General
Surname	Neodymium (III) fluoride
other names	Neodymium fluoride Neodymium trifluoride
Ratio formula	NdF 3
Brief description	purple hexagonal crystals
External identifiers / databases
CAS number 13709-42-7 EC number 237-253-3 ECHA InfoCard 100,033,852 PubChem 83676 Wikidata Q1361951
properties
Molar mass	201.24 g mol −1
Physical state	firmly
density	6.51 g cm −3 (20 ° C)
Melting point	1377 ° C
boiling point	2300 ° C
solubility	almost insoluble in water
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 302-312-332-315-319-335 P: 261-280-305 + 351 + 338
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Neodymium (III) fluoride (NdF ₃ ) is a salt of the rare earth metal neodymium . It forms purple hexagonal crystals.

Extraction and presentation

Neodymium (III) fluoride can be obtained by reacting neodymium (III) oxide with hydrogen fluoride .

${\displaystyle \mathrm {Nd_{2}O_{3}+6\ HF\longrightarrow 2\ NdF_{3}+3\ H_{2}O} }$

use

Neodymium (III) fluoride is often used to manufacture fluoride glasses.

Individual evidence

1. ↑ ML Afanasiev, SP Habuda, AG Lundin: The symmetry and basic structures of LaF ₃ , CeF ₃ , PrF ₃ and NdF ₃ . In: Acta Cryst. , 1972 , B28 , pp. 2903-2905, doi : 10.1107 / S0567740872007198 .
2. ↑ ^{a b c d e} 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. 4-77.
3. ↑ ^{a b c} data sheet Neodymium (III) fluoride, anhydrous, powder, 99.99% trace metals basis from Sigma-Aldrich , accessed on September 29, 2013 ( PDF ).
4. ↑ Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 254.