Английская Википедия:Indium(III) iodide
Indium(III) iodide or indium triiodide is a chemical compound of indium and iodine with the formula InI3.
Preparation
Indium(III) iodide can be obtained by reacting indium with iodine vapor:[1]
Indium(III) iodide can also be obtained by evaporation of a solution of indium in HI.[2]
Properties
Indium(III) iodide is a pale yellow, very hygroscopic monoclinic solid (space group P21/c (space group no. 14), a = 9.837 Å, b = 6.102 Å, c = 12.195 Å, β = 107.69°),[3] which melts at 210 °C to form a dark brown liquid and is highly soluble in water. Its crystals consist of dimeric molecules.[4] The yellow β form slowly converts to the red α form.[5] In the presence of water vapor, the compound reacts with oxygen at 245 °C to form indium(III) oxide iodide.[6]
Distinct yellow and red forms are known. The red form undergoes a transition to the yellow at 57 °C. The structure of the red form has not been determined by X-ray crystallography; however, spectroscopic evidence indicates that indium may be six coordinate.[7] The yellow form consists of In2I6 with 4 coordinate indium centres.
References
Шаблон:Indium compounds
Шаблон:Iodides
- ↑ Шаблон:Cite book
- ↑ Шаблон:Cite book
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite book
- ↑ Шаблон:Cite book
- ↑ Шаблон:Cite book
- ↑ Taylor M. J., Kloo L. A. Journal of Raman Spectroscopy 31, 6, (2000), 465
