Ammonium hexachlororhodate(III) is an inorganic compound with the chemical formula . It is a red, diamagnetic solid that is slightly soluble in water. It is one of several salts of hexachlororhodate.
Structure A monohydrate has been characterized by X-ray crystallography. It forms orthorhombic crystals (space group: Pnma, a = 1.2213, b = 0.7012, c = 1.4151 nm, α = β = γ = 90°).
Preparation and reactions Ammonium hexachlororhodate(III) can be prepared by treating rhodium trichloride with excess ammonium chloride solution:
The compound undergoes partial hydrolysis in dilute aqueous solutions:
Related compounds Ammonium hexachloroiridate(IV) Ammonium hexachloroplatinate(IV)
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