 | |
| Names | |
|---|---|
| IUPAC name Iodogold | |
| Systematic IUPAC name Gold(I) iodide | |
| Other names Gold monoiodide Aurous iodide | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider |
|
| ECHA InfoCard | 100.030.584 |
| UNII | |
| |
| |
| Properties | |
| AuI | |
| Molar mass | 323.871 g/mol |
| Appearance | Yellowish to greenish-yellow powder |
| Density | 8.25 g/cm3[1] |
| −91.0·10−6 cm3/mol | |
| Structure | |
| tetragonal,Pearson symbol tP8, Z = 4 | |
| P42/ncm (No. 138)[1] | |
a = 0.435,b = 0.435,c = 1.373 nm | |
| Hazards | |
| GHS labelling:[2] | |
 | |
| Warning | |
| H315,H319,H335 | |
| P302+P352,P305+P351+P338 | |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Gold monoiodide is theinorganic compound ofgold andiodine with the formula AuI. It can be synthesized by dissolving gold powder in an aqueous solution ofiodine andpotassium iodide.[3] With Lewis bases, AuI reacts to give numerouscomplexes.[4]
Gold monoiodide can be obtained by reacting a tetrachloridoauric acid solution with furthermorepotassium iodide. It is also possible to produce it by reacting gold and iodine in a protective atmosphere at around 390 °C.[5]
Gold monoiodide is a yellow, crystalline powder that gradually decomposes upon contact with water, humidity or light. It has atetragonal crystal structure with thespace groupP42/ncm (space group no. 138), a = 4.359 Å, c = 13.711 Å.[5]
