Ammonium hexachloroselenate(IV) is an inorganic chemical compound with the chemical formula .

Synthesis Reaction of ammonium chloride and selenium tetrachloride:

Physical properties Ammonium hexachloroselenate forms yellow crystals of the cubic system, space group Fm3m. Cell parameters are a = 0,9955 nm, Z = 4.

The compound demonstrates a phase transition at a temperature of 24 K.

It is soluble in water.

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