Ammonium tetrachloropalladate(II) is a chemical compound with the chemical formula . It is a reddish brown powder, forming brown to olive green crystals.
Structure Ammonium tetrachloropalladate(II) forms tetragonal crystals, space group P 4/mmm, cell parameters: a = 0.721 nm, c = 0.426 nm, Z = 1.
Synthesis Ammonium tetrachloropalladate(II) can be prepared by the slow evaporation of a solution containing tetrachloropalladic acid and ammonium chloride:
Another method involves passing chlorine through a palladium black suspension in a concentrated ammonium chloride solution:
Uses The compound is used for the preparation of palladium metallic particles. In addition, it forms Pd-creatinine complexes, which is used in the field of catalysis and semiconductors.
Reactions With the gradual addition of ammonia, an insoluble compound referred to as "Vauquelin's salt" is formed. It is the palladium analogue to Magnus's green salt.
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