The compound consists of separate tetrahedral ammonium cations and octahedral [PtCl6]2− anions.

[2] The complex is so poorly soluble that this step is employed in the isolation of platinum from ores and recycled residues.

[3] As analyzed by X-ray crystallography, the salt crystallizes in a cubic motif reminiscent of the fluorite structure.

[2] Ammonium hexachloroplatinate decomposes to yield platinum sponge when heated to high temperatures:[2][5] Dust containing ammonium hexachloroplatinate can be highly allergenic.

"Symptoms range from irritation of skin and mucous membranes to life-threatening attacks of asthma.