Main Page | See live article | Alphabetical index Gold halides are compounds of gold with the halogens. Monohalides AuCl, AuBr, AuI are all crystalline solids with a structure containing linear zig-zag chains: ..-X-Au-X-Au-X-Au-X-... The X-Au-X angle is 180o. Trihalides The triiodide does not exist. AuCl3 readily forms out of the elements at temperatures below 254oC. It is a volatile red solid. The volatile species is the dimer Au2Cl6. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.