Gold halide

Compound of gold with a halogen From Wikipedia, the free encyclopedia

Gold halides are compounds of gold with the halogens.

Concentrated aqueous solution of gold(III) chloride (auric chloride)
Concentrated aqueous solution of gold(III) chloride (auric chloride)

Monohalides

AuCl, AuBr, and AuI are all crystalline solids with a structure containing alternating linear chains: ..-X-Au-X-Au-X-Au-X-... The X-Au-X angle is less than 180°.[1]

The monomeric AuF molecule has been detected in the gas phase.[2]

Trihalides

Gold triiodide does not exist or is unstable.[3]

Gold(III) fluoride, AuF3, has a unique polymeric helical structure, containing corner-sharing {AuF4} squares.

Pentahalides

Gold(V) fluoride, AuF5, is the only known example of gold in the +5 oxidation state. It most commonly occurs as the dimer Au2F10.

References

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