Gold halide

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°.<ref>Template:Greenwood&Earnshaw2nd</ref>

The monomeric AuF molecule has been detected in the gas phase.<ref>Template:Cite journal</ref>

Trihalides

Gold triiodide does not exist or is unstable.<ref>Template:Citation</ref>

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