Manganese (II) Bromide

Manganese Bromide
Manganese Bromide
General
Systematic ; name	Manganese (II) Bromide
Traditional names	Manganese Bromide
Chem. formula	MnBr 2
Physical properties
condition	light pink crystals
Molar mass	214.76 g / mol
Density	4.385 g / cm³
Thermal properties
T. melt.	698 ° C
Chemical properties
Solubility in water	127.3 0 ; 228 100 g / 100 ml
Classification
Reg. CAS number	13446-03-2
PubChem
Reg. EINECS number
Smiles
Inchi
ChemSpider

Manganese (II) bromide is an inorganic compound, a salt of a manganese metal and hydrobromic acid with the formula MnBr ₂ , light pink crystals, soluble in water, form crystalline hydrates .

Content

1 Receiving
2 Physical properties
3 Chemical properties
4 Literature

Getting

Effect of bromine vapor on powdered manganese:

{\mathsf {Mn+Br_{2}\ {\xrightarrow {}}\ MnBr_{2}}}

{\ displaystyle {\ mathsf {Mn + Br_ {2} \ {\ xrightarrow {}} \ MnBr_ {2}}}}

The effect of hydrobromic acid on manganese carbonate

{\mathsf {MnCO_{3}+2HBr\ {\xrightarrow {}}\ MnBr_{2}+CO_{2}\uparrow +H_{2}O}}

{\ displaystyle {\ mathsf {MnCO_ {3} + 2HBr \ {\ xrightarrow {}} \ MnBr_ {2} + CO_ {2} \ uparrow + H_ {2} O}}}

Physical Properties

Manganese (II) bromide forms light pink crystals of trigonal syngony , space group P 3 m1 , cell parameters a = 0.3820 nm, c = 0.6188 nm, Z = 1.

It is well dissolved in water.

It forms crystalline hydrates of the composition MnBr ₂ • n H ₂ O, where n = 1, 2, 4, and 6.

Hexahydrate is formed at a temperature below 13 ° C.

With ammonia forms adducts of the form MnBr ₂ • n NH ₃ , where n = 1, 2, 6.

Chemical Properties

When heated, crystalline hydrate gradually loses water:

{\mathsf {MnBr_{2}\cdot 6H_{2}O\ {\xrightarrow[{-2H_{2}O}]{13^{o}C}}\ MnBr_{2}\cdot 4H_{2}O\ {\xrightarrow[{-2H_{2}O}]{80^{o}C}}\ MnBr_{2}\cdot 2H_{2}O}}

{\ displaystyle {\ mathsf {MnBr_ {2} \ cdot 6H_ {2} O \ {\ xrightarrow [{- 2H_ {2} O}] {13 ^ {o} C}} \ MnBr_ {2} \ cdot 4H_ { 2} O \ {\ xrightarrow [{- 2H_ {2} O}] {80 ^ {o} C}} \ MnBr_ {2} \ cdot 2H_ {2} O}}}

Literature

Chemical Encyclopedia / Editorial Board: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1990. - T. 2. - 671 p. - ISBN 5-82270-035-5 .
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.