Chemistry:Thulium(III) iodide
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| Other names
Thulium iodide
Thulium triiodide | |
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3D model (JSmol)
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| Properties | |
| TmI3 | |
| Appearance | Yellow hexagonal crystal[1] |
| Melting point | 1015 °C[2] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Thulium(III) iodide is an iodide of thulium, with the chemical formula of TmI3. Thulium(III) iodide is used as a component of metal halide lamps.[3]
Preparation
Mercury(II) iodide can be heated with thulium to obtain thulium(III) iodide:[4]
- 2 Tm + 3 HgI2 → 2 TmI3 + 3 Hg
The mercury produced in the reaction can be removed by distillation.[5][4]
The thulium(III) iodide hydrate crystallized from solution can be heated with ammonium iodide to obtain the anhydrous form.[6][4]
Properties
Thulium(III) iodide is a yellow, highly hygroscopic solid with a bismuth(III) iodide-type crystal structure.[4] It forms in the hexagonal crystal system.[6] Its hydrate can be heated in air to obtain TmOI. Its anhydrous form can be heated with thulium to obtain TmI2:[7]
- 2 TmI3 + Tm → 3 TmI2
References
- ↑ 王世华,谷亚平,蒋盛邦.在Tm-HgI2体系中TmI2生成机理[J].物理化学学报,1987(03):334-336.
- ↑ Jantsch, G.; Zeitschrift fuer Anorganische und Allgemeine Chemie 1933, V212, P65-83 CAPLUS
- ↑ Flesch, Peter G. (2007). Light and Light Sources: High-Intensity Discharge Lamps. Springer. p. 45. ISBN 9783540326847. https://books.google.com/books?id=fWHQbhgxpAkC&pg=PA45.
- ↑ 4.0 4.1 4.2 4.3 Georg Brauer (Hrsg.), unter Mitarbeit von Marianne Baudler u. a.: Handbuch der Präparativen Anorganischen Chemie. 3., umgearbeitete Auflage. Band I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6, S. 1077.
- ↑ Asprey, L. B.; Keenan, T. K.; Kruse, F. H. Preparation and crystal data for lanthanide and actinide triiodides. Inorg. Chem., 1964. 3 (8): 1137-1240
- ↑ 6.0 6.1 无机化学丛书 第七卷 钪 稀土元素. 科学出版社. pp 211
- ↑ L.B. Asprey, F.H. Kruse (1960). "Divalent thulium. Thulium di-iodide". Journal of Inorganic and Nuclear Chemistry 13 (1–2): 32–35. doi:10.1016/0022-1902(60)80232-1. http://linkinghub.elsevier.com/retrieve/pii/0022190260802321. Retrieved 2018-04-13.（注：此文献指出Tm+HgI2的反应生成TmI2）
| HI | He | ||||||||||||||||
| LiI | BeI2 | BI3 | CI4 | NI3 | I2O4, I2O5, I4O9 |
IF, IF3, IF5, IF7 |
Ne | ||||||||||
| NaI | MgI2 | AlI3 | SiI4 | PI3, P2I4 |
S | ICl, ICl3 |
Ar | ||||||||||
| KI | CaI2 | Sc | TiI4 | VI3 | CrI3 | MnI2 | FeI2 | CoI2 | NiI2 | CuI | ZnI2 | Ga2I6 | GeI2, GeI4 |
AsI3 | Se | IBr | Kr |
| RbI | SrI2 | YI3 | ZrI4 | NbI5 | Mo | Tc | Ru | Rh | Pd | AgI | CdI2 | InI3 | SnI4, SnI2 |
SbI3 | TeI4 | I | Xe |
| CsI | BaI2 | HfI4 | TaI5 | W | Re | Os | Ir | Pt | AuI | Hg2I2, HgI2 |
TlI | PbI2 | BiI3 | Po | AtI | Rn | |
| Fr | RaI2 | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og | |
| ↓ | |||||||||||||||||
| La | Ce | Pr | Nd | Pm | SmI2 | Eu | Gd | TbI3 | Dy | Ho | Er | Tm | Yb | Lu | |||
| Ac | ThI4 | Pa | UI3, UI4 |
Np | Pu | Am | Cm | Bk | Cf | EsI3 | Fm | Md | No | Lr | |||
 |  |
