Gadolinium Chloride (III)

Gadolinium chloride
Gadolinium chloride
Are common
Systematic ; name	Gadolinium Chloride (III)
Traditional names	gadolinium chloride
Chem. formula	Gdcl 3
Physical properties
condition	colorless crystals
Molar mass	263.59 g / mol
Density	4.52; 4,541 g / cm³
Thermal properties
T. melt.	602; 605; 612; 628 ° C
T. bale.	1580; 1595 ° C
Like heat resistant.	98.3 J / (mol · K)
Enthalpy of Education	-1005.4 kJ / mol
Chemical properties
Solubility in water	dissolves
Classification
Reg. CAS number	10138-52-0
PubChem
Reg. EINECS number
Smiles
Inchi
Chebi
ChemSpider

Gadolinium (III) chloride is an inorganic compound, a salt of gadolinium and hydrochloric acid with the formula GdCl ₃ , colorless crystals, it dissolves in water, forms a crystalline hydrate.

Content

Getting

Dissolution of gadolinium oxide in hydrochloric acid:

{\mathsf {Gd_{2}O_{3}+6HCl\ {\xrightarrow {}}\ 2GdCl_{3}+3H_{2}O}}

{\ displaystyle {\ mathsf {Gd_ {2} O_ {3} + 6HCl \ {\ xrightarrow {}} \ 2GdCl_ {3} + 3H_ {2} O}}}

Gadolinium Chlorination:

{\mathsf {2Gd+3Cl_{2}\ {\xrightarrow {200^{o}C}}\ 2GdCl_{3}}}

{\ displaystyle {\ mathsf {2Gd + 3Cl_ {2} \ {\ xrightarrow {200 ^ {o} C}} \ 2GdCl_ {3}}}}

Chlorination of gadolinium oxalate :

{\mathsf {Gd_{2}(C_{2}O_{4})_{3}+3Cl_{2}\ {\xrightarrow {200^{o}C}}\ 2GdCl_{3}+6CO_{2}}}

{\ displaystyle {\ mathsf {Gd_ {2} (C_ {2} O_ {4}) _ {3} + 3Cl_ {2} \ {\ xrightarrow {200 ^ {o} C}} \ 2GdCl_ {3} + 6CO_ {2}}}}

Physical Properties

Gadolinium (III) chloride forms colorless crystals of hexagonal syngony , cell parameters a = 0.7363 nm, c = 0.4105 nm, Z = 2.

It is well dissolved in water.

Forms a crystalline hydrate of the composition GdCl ₃ • 6H ₂ O.

Chemical Properties

Anhydrous salt is obtained by heating in a nitrogen atmosphere of a crystalline hydrate in the presence of ammonium chloride to prevent hydrolysis :

{\mathsf {GdCl_{3}\cdot 6H_{2}O\ {\xrightarrow {200-400^{o}C,NH_{4}Cl}}\ GdCl_{3}+6H_{2}O}}

{\ displaystyle {\ mathsf {GdCl_ {3} \ cdot 6H_ {2} O \ {\ xrightarrow {200-400 ^ {o} C, NH_ {4} Cl}} \ GdCl_ {3} + 6H_ {2} O }}}

When heating pure crystalline hydrate, it undergoes hydrolysis:

{\mathsf {GdCl_{3}\cdot 6H_{2}O\ {\xrightarrow {200^{o}C}}\ GdOCl+2HCl+5H_{2}O}}

{\ displaystyle {\ mathsf {GdCl_ {3} \ cdot 6H_ {2} O \ {\ xrightarrow {200 ^ {o} C}} \ GdOCl + 2HCl + 5H_ {2} O}}}

Literature

Chemical Encyclopedia / Editorial Board: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1988. - T. 1. - 623 p.
Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
Greenwood N., Earnshaw A. Chemistry of elements. - Binom. Laboratory of knowledge, 2008. - T. 2. - 666 p. - ISBN 978-5-94774-372-2 .
Inorganic Synthesis Guide: 6 Vol. / Ed. Brower G. - M .: Mir, 1985 .-- T. 4 .-- 447 p.