Thulium(II) iodide

Names
Other names

Thulium diiodide

Identifiers

CAS Number

* 60864-26-8 Y

3D model (JSmol)

* Interactive image

ECHA InfoCard | 100.151.436

CompTox Dashboard (EPA)

* DTXSID40411818

SMILES

* I[Tm]I

Properties

Chemical formula

| 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).

Infobox references

Chemical compound

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

## Preparation and properties[edit]

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:[1]

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

## References[edit]

1. ^ a b 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 (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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Thulium compounds

* Tm(C2H3O2)3
* Tm(C5H7O2)3
* TmF2
* TmF3
* TmCl2
* TmCl3
* TmBr2
* TmBr3
* TmI2
* TmI3
* Tm(OH)3
* Tm(NO3)3
* Tm(CH3COO)3
* Tm2O3
* TmP
* Tm2Se3
* Tm(acac)3
* Tm2(SO4)3
* Tm2(SeO4)3

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Salts and covalent derivatives of the iodide ion

| HI
+H |  |  |  | He

|
|
|
|

LiI | BeI2 | BI3
+BO3 | CI4
+C | NI3
NH4I
+N | I2O4
I2O5
I4O9 | IF
IF3
IF5
IF7 | Ne
NaI | MgI2 | AlI
AlI3 | SiI4 | PI3
P2I4

PI5 | S2I2 | ICl
ICl3 | Ar
KI | CaI2 |  | ScI3 | TiI2
TiI3
TiI4 | VI2
VI3 | CrI2
CrI3 | MnI2 | FeI
FeI2
FeI3 | CoI2 | NiI2
-Ni | CuI | ZnI2 | GaI
GaI3 | GeI2
GeI4
+Ge | AsI3
As2I4
+As | Se  | IBr
IBr3 | Kr
RbI
RbI3 | SrI2 |  | YI3 | ZrI3
ZrI4 | NbI4
NbI5 | MoI2
MoI3 | TcI3 | RuI3 | RhI3 | PdI2 | AgI | CdI2 | InI
InI3 | SnI2
SnI4 | SbI3
+Sb | TeI4
+Te | I− | Xe
CsI
CsI3 | BaI2 |  | LuI3 | HfI3
HfI4 | TaI4
TaI5 | WI2
WI3 | ReI3
ReI
4 | OsI
OsI2
OsI3 | IrI3
IrI
4 | PtI2
PtI4 | AuI
AuI3 | Hg2I2
HgI2 | TlI
TlI3 | PbI2 | BiI3 | PoI2
PoI4 | AtI | Rn
Fr  | RaI2 |  | Lr  | Rf  | Db  | Sg  | Bh  | Hs  | Mt  | Ds  | Rg  | Cn  | Nh  | Fl  | Mc  | Lv  | Ts  | Og
| ↓  |  |
| LaI2
LaI3 | CeI2
CeI3 | PrI2
PrI3 | NdI2
NdI3 | PmI3 | SmI2
SmI3 | EuI2
EuI3 | GdI2
GdI3 | TbI3 | DyI2
DyI
3 | HoI3 | ErI3 | TmI2
TmI3 | YbI2
YbI3
AcI3 | ThI4 | PaI4
PaI5 | UI3
UI4 | NpI3 | PuI3 | AmI2
AmI3 | CmI3 | BkI
3 | CfI

CfI
3 | EsI3 | Fm  | Md  | No
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