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by | Mar 16, 2018 | Hosta

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Thulium(II) iodide is an inorganic compound with the chemical formula TmI2.

Preparation and properties

Thulium(II) iodide can be obtained by reacting thulium(III) iodide and alkali metals in a tantalum container at 700~800°C. TmI2 can be obtained by using lithium and sodium as reducing agents, while potassium, rubidium and caesium can generate the perovskite structure MTmI3.[2] TmI2 can also react directly with CsI (340 °C) to generate CsTmI3.[3]

Thulium(II) iodide can also be prepared by reacting thulium and mercury(I) iodide. The reaction process is as follows:[1]

2 Tm + 3 HgI2 → 2 TmI3 + 3 Hg
Tm + HgI2 → TmI2 + Hg
Tm + 2 TmI3 → 3 TmI2

References

  1. ^ a b Shihua, Wang; Yaping, Gu; Shengbang, Jiang (1987). "FORMATION MECHANISM OF TmI2 IN Tm-HgI2 SYSTEM". Acta Physico-Chimica Sinica. 3 (03): 334–336. doi:10.3866/pku.whxb19870320. ISSN 1000-6818.
  2. ^ Schilling, Gaby; Kunert, Christine; Schleid, Thomas; Meyer, Gerd (Dec 1992). "Metallothermische Reduktion der Tribromide und -iodide von Thulium und Ytterbium mit Alkalimetallen". Zeitschrift für anorganische und allgemeine Chemie. 618 (12): 7–12. doi:10.1002/zaac.19926180102. ISSN 0044-2313.
  3. ^ 罗时敏,王世华.CsTmI3生成机理及其相转变[J].物理化学学报,1990(01):93-96.
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