Ammonium hexachlorohydrate (III)

Hexachloride
Hexachloride
Are common
Systematic ; name	Ammonium hexachlorohydrate (III)
Traditional names	Ammonium hexachlororodiate
Chem. formula	(NH 4 ) 3 [RhCl 6 ]
Physical properties
condition	red crystals
Molar mass	369.74 g / mol
Classification
Reg. CAS number	15336-18-2
PubChem
Reg. EINECS number
Smiles
Inchi
Chebi
ChemSpider

Ammonium hexachlorohydrate (III) is an inorganic compound, a complex chloride of rhodium and ammonia with the formula (NH ₄ ) ₃ [RhCl ₆ ], red crystals, soluble in water, form a crystalline hydrate .

Content

Getting

Evaporation of solutions of rhodium (III) chloride and excess ammonium chloride :

{\mathsf {RhCl_{3}+3NH_{4}Cl\ {\xrightarrow {}}\ (NH_{4})_{3}[RhCl_{6}]}}

{\ displaystyle {\ mathsf {RhCl_ {3} + 3NH_ {4} Cl \ {\ xrightarrow {}} \ (NH_ {4}) _ {3} [RhCl_ {6}]}}}

Physical Properties

Ammonium hexachlorohydrate (III) forms red crystals.

It is soluble in water.

It forms crystalline hydrates of the composition (NH ₄ ) ₃ [RhCl ₆ ] • n H ₂ O, where n = 1 and 12 are dark red crystals.

Chemical Properties

In dilute aqueous solutions, it undergoes partial hydrolysis:

{\mathsf {(NH_{4})_{3}[RhCl_{6}]+H_{2}O\ {\xrightarrow {}}\ (NH_{4})_{2}[RhCl_{5}(H_{2}O)]\downarrow +NH_{4}Cl}}

{\ displaystyle {\ mathsf {(NH_ {4}) _ {3} [RhCl_ {6}] + H_ {2} O \ {\ xrightarrow {}} \ (NH_ {4}) _ {2} [RhCl_ { 5} (H_ {2} O)] \ downarrow + NH_ {4} Cl}}}

Literature

Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
Inorganic Synthesis Guide: 6 Vol. / Ed. Brower, G. - Moscow : Mir, 1985 .-- V. 5 .-- 360 p.
Ginzburg S. I. et al. Analytical chemistry of platinum metals. - M .: Nauka, 1972.- 616 p.