Thulium(II) iodide
Names
Other names
Thulium diiodide
Identifiers
3D model (JSmol)
ECHA InfoCard 100.151.436 Edit this at Wikidata
  • I[Tm]I
Properties
TmI2
Appearance Dark brown hexagonal crystals[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Thulium diiodide is an inorganic compound with the chemical formula TmI2.

Preparation and properties

Thulium diiodide 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 iodide can also be prepared by reacting thulium and mercury(I) iodide. The reaction process is as follows:[4]

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

参考文献

  1. ^ Shihua, Wang; Yaping, Gu; Shengbang, Jiang (1987). "FORMATION MECHANISM OF TmI<SUB>2</SUB> IN Tm-HgI<SUB>2 </SUB>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 (1992-12). "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. ((cite journal)): Check date values in: |date= (help)
  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.
  4. ^ Cite error: The named reference Wang was invoked but never defined (see the help page).
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