Molybdenum Chloride (II)

Molybdenum chloride
Molybdenum chloride
General
Systematic ; name	Molybdenum Chloride (II)
Traditional names	Molybdenum Chloride; molybdenum dichloride hexamer
Chem. formula	MoCl 2
Physical properties
condition	yellow substance
Molar mass	166.85 g / mol
Density	3,714 g / cm³
Classification
Reg. CAS number
PubChem
Reg. EINECS number
ChemSpider

Molybdenum (II) chloride is an inorganic compound, a salt of a molybdenum metal and hydrochloric acid with the formula MoCl ₂ , a yellow substance insoluble in water forms a crystalline hydrate .

Content

1 Receiving
2 Physical properties
3 Chemical properties
4 Literature

Getting

The effect of phosgene on heated molybdenum:

{\mathsf {Mo+COCl_{2}\ {\xrightarrow {630^{o}C}}\ MoCl_{2}+CO}}

{\ displaystyle {\ mathsf {Mo + COCl_ {2} \ {\ xrightarrow {630 ^ {o} C}} \ MoCl_ {2} + CO}}}

Decomposition of molybdenum (III) chloride when heated in an inert atmosphere:

{\mathsf {2MoCl_{3}\ {\xrightarrow {T}}\ MoCl_{2}+MoCl_{4}}}

{\ displaystyle {\ mathsf {2MoCl_ {3} \ {\ xrightarrow {T}} \ MoCl_ {2} + MoCl_ {4}}}}

Physical Properties

Molybdenum (II) chloride forms a yellow amorphous substance insoluble in water, toluene and acetic acid . Soluble in ethanol and diethyl ether .

Molecules of molybdenum chloride are hexameric and have the structure [Mo ₆ Cl ₈ ] Cl ₄ .

It forms a crystalline hydrate of the composition [Mo ₆ Cl ₈ ] Cl ₄ • 8H ₂ O — tetragonal crystals, space group P 4 / nnc , cell parameters a = 0.906 nm, c = 2.804 nm, Z = 4.

Chemical Properties

It is soluble in alkalis :

{\mathsf {[Mo_{6}Cl_{8}]Cl_{4}+6KOH\ {\xrightarrow {}}\ K_{2}[Mo_{6}Cl_{8}(OH)_{6}]+4KCl}}

{\ displaystyle {\ mathsf {[Mo_ {6} Cl_ {8}] Cl_ {4} + 6KOH \ {\ xrightarrow {}} \ K_ {2} [Mo_ {6} Cl_ {8} (OH) _ {6 }] + 4KCl}}}

Reacts with silver nitrate solution:

{\mathsf {[Mo_{6}Cl_{8}]Cl_{4}+4AgNO_{3}+2H_{2}O\ {\xrightarrow {}}\ [Mo_{6}Cl_{8}(OH)_{2}(NO_{3})_{4}]+4AgCl}}

{\ displaystyle {\ mathsf {[Mo_ {6} Cl_ {8}] Cl_ {4} + 4AgNO_ {3} + 2H_ {2} O \ {\ xrightarrow {}} \ [Mo_ {6} Cl_ {8} ( OH) _ {2} (NO_ {3}) _ {4}] + 4AgCl}}}

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.
Ripan R., Chetyanu I. Inorganic chemistry. Chemistry of metals. - M .: Mir, 1972. - T. 2. - 871 p.