Neodymium Fluoride (III)

Neodymium fluoride
Neodymium fluoride
General
Systematic ; name	Neodymium Fluoride (III)
Traditional names	Neodymium Fluoride
Chem. formula	Ndf 3
Physical properties
condition	pale pink crystals
Molar mass	201.24 g / mol
Density	6.51 g / cm³
Thermal properties
T. melt.	1377; 1413 ° C
T. bale.	2300; 2330 ° C
Like heat resistant.	94.9 J / (mol · K)
Enthalpy of Education	-1679 kJ / mol
Classification
Reg. CAS number	13709-42-7, 14932-78-6
PubChem
Reg. EINECS number	237-253-3
Smiles
Inchi
ChemSpider

Neodymium (III) fluoride is a binary inorganic compound, a metal salt of neodymium and hydrofluoric acid with the formula NdF ₃ , pale pink crystals, it does not dissolve in water, forms a crystalline hydrate .

Content

1 Receiving
2 Physical properties
3 Chemical properties
4 Application
5 Literature

Getting

The effect of hydrogen fluoride on neodymium (III) oxide :

{\mathsf {2Nd_{2}O_{3}+6HF\ {\xrightarrow {700^{o}C}}\ 2NdF_{3}+3H_{2}O}}

{\ displaystyle {\ mathsf {2Nd_ {2} O_ {3} + 6HF \ {\ xrightarrow {700 ^ {o} C}} \ 2NdF_ {3} + 3H_ {2} O}}}

Exchange reactions of soluble salts of neodymium and alkali metal fluorides :

{\mathsf {Nd(NO_{3})_{3}+3NaF\ {\xrightarrow {}}\ NdF_{3}\downarrow +3NaNO_{3}}}

{\ displaystyle {\ mathsf {Nd (NO_ {3}) _ {3} + 3NaF \ {\ xrightarrow {}} \ NdF_ {3} \ downarrow + 3NaNO_ {3}}}}

The effect of hydrofluoric acid on neodymium oxide or hydroxide :

{\mathsf {Nd_{2}O_{3}+6HF\ {\xrightarrow {}}\ 2NdF_{3}+3H_{2}O}}

{\ displaystyle {\ mathsf {Nd_ {2} O_ {3} + 6HF \ {\ xrightarrow {}} \ 2NdF_ {3} + 3H_ {2} O}}}

{\mathsf {Nd(OH)_{3}+3HF\ {\xrightarrow {}}\ NdF_{3}+3H_{2}O}}

{\ displaystyle {\ mathsf {Nd (OH) _ {3} + 3HF \ {\ xrightarrow {}} \ NdF_ {3} + 3H_ {2} O}}}

Physical Properties

Neodymium (III) fluoride forms pale pink crystals of hexagonal syngony , space group P 3 c1 , cell parameters a = 0.7030 nm, c = 0.7200 nm, Z = 6.

Not soluble in water.

Forms a crystalline hydrate of the composition NdF ₃ • ½H ₂ O.

Chemical Properties

Hydrolyzed by superheated steam:

{\mathsf {NdF_{3}+H_{2}O\ {\xrightarrow {T}}\ 2NdOF+2HF}}

{\ displaystyle {\ mathsf {NdF_ {3} + H_ {2} O \ {\ xrightarrow {T}} \ 2NdOF + 2HF}}}

Reacts with alkalis :

{\mathsf {NdF_{3}+3NaOH\ {\xrightarrow {}}\ Nd(OH)_{3}+3NaF}}

{\ displaystyle {\ mathsf {NdF_ {3} + 3NaOH \ {\ xrightarrow {}} \ Nd (OH) _ {3} + 3NaF}}}

Neodymium is reduced to a metal from neodymium fluoride by active metals, for example, calcium :

{\mathsf {2NdF_{3}+3Ca\ {\xrightarrow {T}}\ 2Nd+3CaF_{2}}}

{\ displaystyle {\ mathsf {2NdF_ {3} + 3Ca \ {\ xrightarrow {T}} \ 2Nd + 3CaF_ {2}}}}

Application

It is used to obtain pure neodymium by the metallothermic method.
Component of laser materials .

Literature

Chemical Encyclopedia / Editorial Board: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1992. - T. 3. - 639 p. - ISBN 5-82270-039-8 .
Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 2nd ed., rev. - M.-L.: Chemistry, 1966. - T. 1. - 1072 p.
Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
Chemical Encyclopedic Dictionary / Editorial: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1983. - 792 p.
Chemistry and Technology of Rare and Scattered Elements, Part II / Ed. K.A. Bolshakova. - M .: Higher. School, 1976. - 360 p.
CRC Handbook of Chemistry and Physics . - 89th Edition. - Taylor and Francis Group, LLC, 2008-2009.

Neodymium fluoride
General
Systematic name	Neodymium Fluoride (III)
Traditional names	Neodymium Fluoride
Chem. formula	Ndf ₃
Physical properties
condition	pale pink crystals
Molar mass	201.24 g / mol
Density	6.51 g / cm³
Thermal properties
T. melt.	1377; 1413 ° C
T. bale.	2300; 2330 ° C
Like heat resistant.	94.9 J / (mol · K)
Enthalpy of Education	-1679 kJ / mol
Classification
Reg. CAS number	13709-42-7, 14932-78-6
PubChem
Reg. EINECS number	237-253-3
Smiles
Inchi
ChemSpider