Carbonate tetraammine cobalt (III) sulfate

Carbonatotetraamminecobalt sulfate
Carbonatotetraamminecobalt sulfate
General
Systematic ; name	Carbonate tetraammine cobalt (III) sulfate
Traditional names	Monocarbonate tetramine cobaltisulfate
Chem. formula	[Co (NH 3 ) 4 (CO 3 )] 2 SO 4
Physical properties
condition	hydrate - red crystals
Molar mass	470.19 g / mol
Density	1,882 g / cm³

Carbonate tetraammine cobalt (III) sulfate is an inorganic compound, a complex amine salt of a cobalt metal, carbonic and sulfuric acid with the formula [Co (NH ₃ ) ₄ (CO ₃ )] ₂ SO ₄ , dissolves in water, forms crystalline hydrates - red crystals.

Content

1 Receiving
2 Physical properties
3 Chemical properties
4 Literature

Getting

To a solution of cobalt (II) sulfate add solutions of ammonium carbonate and ammonia , and then pass a stream of air:

{\mathsf {4CoSO_{4}+4(NH_{4})_{2}CO_{3}+12NH_{3}\cdot H_{2}O+O_{2}\ {\xrightarrow {}}\ }}

{\ displaystyle {\ mathsf {4CoSO_ {4} +4 (NH_ {4}) _ {2} CO_ {3} + 12NH_ {3} \ cdot H_ {2} O + O_ {2} \ {\ xrightarrow {} } \}}}

{\mathsf {\ {\xrightarrow {}}\ 2[Co(NH_{3})_{4}(CO_{3})]_{2}SO_{4}+2(NH_{4})_{2}SO_{4}+14H_{2}O}}

{\ displaystyle {\ mathsf {\ {\ xrightarrow {}} \ 2 [Co (NH_ {3}) _ {4} (CO_ {3})] _ {2} SO_ {4} +2 (NH_ {4} ) _ {2} SO_ {4} + 14H_ {2} O}}}

Physical Properties

Carbonate tetra-amine cobalt (III) sulfate forms a crystalline hydrate of the composition [Co (NH ₃ ) ₄ (CO ₃ )] ₂ SO ₄ • 3H ₂ O — red monoclinic syngony crystals, space group P m , cell parameters a = 1.180 nm, b = 1.060 nm, c = 0.742 nm, β = 98.65 °, Z = 2.

It is soluble in water. Aqueous solutions decompose in the light.

Chemical Properties

In slightly acidified solutions it is hydrolyzed to form diaquatetraammine cobalt (III) sulfate :

{\mathsf {[Co(NH_{3})_{4}(CO_{3})]_{2}SO_{4}+2H_{2}SO_{4}\ {\xrightarrow {}}\ [Co(NH_{3})_{4}(H_{2}O)_{2}]_{2}(SO_{4})_{3}+2CO_{2}\uparrow }}

{\ displaystyle {\ mathsf {[Co (NH_ {3}) _ {4} (CO_ {3})] _ {2} SO_ {4} + 2H_ {2} SO_ {4} \ {\ xrightarrow {}} \ [Co (NH_ {3}) _ {4} (H_ {2} O) _ {2}] _ {2} (SO_ {4}) _ {3} + 2CO_ {2} \ uparrow}}}

Literature

Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 2nd ed., rev. - M.-L.: Chemistry, 1966. - T. 1. - 1072 p.
Inorganic Synthesis Guide: 6 Vol. / Ed. Brower, G. - Moscow : Mir, 1985 .-- V. 5 .-- 360 p.