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Gold halide

Compound of gold with a halogen

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

Gold halides are compounds of gold with the halogens.

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°.

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

Trihalides

Gold triiodide does not exist or is unstable.

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

{{Greenwood&Earnshaw2nd
(1994). "Neutral Gold(I) Fluoride Does Indeed Exist". [[Angewandte Chemie International Edition in English]].
(2001). "Structural variations and bonding in gold halides: A quantum chemical study of monomeric and dimeric gold monohalide and gold trihalide molecules, AuX, Au2X2, AuX3, and Au2X6 (X = F, Cl, Br, I)". Chemistry - A European Journal.

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metal-halides gold–halogen-compounds

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