Tellurium dichloride

Identifiers

CAS Number

* 10025-71-5 Y

3D model (JSmol)

* Interactive image

ChemSpider |

* 2588376

PubChem CID

* 3341691

UNII |

* 0T7J7SHH1H

CompTox Dashboard (EPA)

* DTXSID60143068

InChI

* InChI=1S/Cl2Te/c1-3-2

Key: VXLPBEHPTWIBJR-UHFFFAOYSA-N

SMILES

* Cl[Te]Cl

Properties

Chemical formula

| Cl2Te
Molar mass | 198.50 g·mol−1
Appearance  | black solid[1]
Density | 6.9 g·cm−3[1]
Melting point | 208 °C[1]
Boiling point | 328 °C[1]

Solubility in water

| reacts[1]
Solubility | reacts with diethyl ether, insoluble in tetrachloromethane[1]
Related compounds

Other anions

| Ditellurium bromide, Te2Br

Other cations

| Dichlorine monoxide, OCl2
Sulfur dichloride, SCl2
Selenium dichloride, SeCl2
Polonium dichloride, PoCl2

Related compounds

| Tritellurium dichloride, Te3Cl2
Tellurium tetrachloride, TeCl4

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Infobox references

Chemical compound

Tellurium dichloride is a chloride of tellurium with the chemical formula TeCl2.

## Preparation

[edit]

Tellurium dichloride can be produced by reacting tellurium with difluorodichloromethane.[2][3]

It can also be produced by the comproportionation of tellurium and tellurium tetrachloride.[4]

## Properties

[edit]

Tellurium dichloride is a black solid that reacts with water. It melts into a black liquid and vapourizes into a purple gas.[1][5] The gas consists of monomeric TeCl2 molecules with Te–Cl bond lengths of 2.329 Å and a Cl–Te–Cl bond angle of 97.0°.[5]

Tellurium dichloride (TeCl2) is unstable with respect to disproportionation.[5] Several complexes of it are known and well characterized. They are prepared by treating tellurium dioxide with hydrochloric acid in the presence of thioureas. The thiourea serves both as a ligand and as a reductant, converting Te(IV) to Te(II).

## References

[edit]

1. ^ a b c d e f g Perry, Dale (2011). Handbook of Inorganic Compounds. Boca Raton, FL: CRC Press. ISBN 978-1-4398-1462-8. OCLC 759865801.
2. ^ Gmelin, Leopold (1976). Tellurium (in English and German). Springer-Verlag. OCLC 77834357.
3. ^ Aynsley, E. E. (1953). "598. The preparation and properties of tellurium dichloride". Journal of the Chemical Society (Resumed). Royal Society of Chemistry (RSC): 3016. doi:10.1039/jr9530003016. ISSN 0368-1769.
4. ^ Haaland, Arne (2008). Molecules and models : the molecular structures of main group element compounds. Oxford New York: Oxford University Press. ISBN 978-0-19-152860-6. OCLC 226969121.
5. ^ a b c Fernholt, Liv; Haaland, Arne; Volden, Hans V.; Kniep, Rüdiger (1985). "The molecular structure of tellurium dichloride, TeCl2, determined by gas electron diffraction". Journal of Molecular Structure. 128 (1–3). Elsevier BV: 29–31\. Bibcode:1985JMoSt.128...29F. doi:10.1016/0022-2860(85)85037-7. ISSN 0022-2860.1–3&rft.pages=29-31&rft.date=1985&rft.issn=0022-2860&rft_id=info:doi/10.1016/0022-2860(85)85037-7&rft_id=info:bibcode/1985JMoSt.128...29F&rft.aulast=Fernholt&rft.aufirst=Liv&rft.au=Haaland,+Arne&rft.au=Volden,+Hans+V.&rft.au=Kniep,+Rüdiger&rft_id=https://doi.org/10.1016%2F0022-2860%2885%2985037-7&rfr_id=info:sid/en.wikipedia.org:Tellurium+dichloride" class="Z3988">

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Tellurium compounds

* Te2Br
* TeBr4
* Te3Cl2
* TeCl2
* TeCl4
* TeF4
* TeF6
* TeI
* TeI4
* TeO
* TeO2
* TeO3
* Te(OH)6
* HOTeF5
* TeN
* TeO2−
4+TeO2−

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Salts and covalent derivatives of the chloride ion

| HCl |  |  |  | He

|
|
|
|

LiCl | BeCl2 | B4Cl4
B12Cl12
BCl3
B2Cl4
+BO3 | C2Cl2
C2Cl4
C2Cl6
CCl4

+CO3 | NCl3
ClN3

+NO3 | ClxOy
Cl2O
Cl2O2
ClO
ClO2
Cl2O4
Cl2O6
Cl2O7
ClO4
+O | ClF
ClF3
ClF5 | Ne
NaCl | MgCl2 | AlCl
AlCl3 | Si5Cl12
Si2Cl6
SiCl4 | P2Cl4
PCl3
PCl5
+P | S2Cl2
SCl2
SCl4
+SO4 | Cl2 | Ar
KCl | CaCl
CaCl2 |  | ScCl3 | TiCl2
TiCl3
TiCl4 | VCl2
VCl3
VCl4
VCl5 | CrCl2
CrCl3
CrCl4 | MnCl2
MnCl3 | FeCl2
FeCl3 | CoCl2
CoCl3 | NiCl2 | CuCl
CuCl2 | ZnCl2 | GaCl
GaCl3 | GeCl2
GeCl4 | AsCl3
AsCl5
+As | Se2Cl2
SeCl2
SeCl4 | BrCl | Kr
RbCl | SrCl2 |  | YCl3 | ZrCl2
ZrCl3
ZrCl4 | NbCl3
NbCl4
NbCl5 | MoCl2
MoCl3
MoCl4
MoCl5
MoCl6 | TcCl3
TcCl4 | RuCl2
RuCl3
RuCl4 | RhCl3 | PdCl2 | AgCl | CdCl2 | InCl
InCl2
InCl3 | SnCl2
SnCl4 | SbCl3
SbCl5 | Te3Cl2
TeCl2
TeCl4 | ICl
ICl3 | XeCl
XeCl2
XeCl4
CsCl | BaCl2 | *  | LuCl3 | HfCl4 | TaCl3
TaCl4
TaCl5 | WCl2
WCl3
WCl4
WCl5
WCl6 | ReCl3
ReCl4
ReCl5
ReCl6 | OsCl2
OsCl3
OsCl4
OsCl5 | IrCl2
IrCl3
IrCl4 | PtCl2
PtCl4 | AuCl
(Au[AuCl4])2
AuCl3 | Hg2Cl2
HgCl2 | TlCl
TlCl3 | PbCl2
PbCl4 | BiCl3 | PoCl2
PoCl4 | AtCl | Rn
FrCl | RaCl2 | **  | LrCl3 | RfCl4 | DbCl5 | SgO2Cl2 | BhO3Cl | Hs  | Mt  | Ds  | Rg  | Cn  | Nh  | Fl  | Mc  | Lv  | Ts  | Og

*  | LaCl3 | CeCl3 | PrCl3 | NdCl2
NdCl3 | PmCl3 | SmCl2
SmCl3 | EuCl2
EuCl3 | GdCl3 | TbCl3 | DyCl2
DyCl3 | HoCl3 | ErCl3 | TmCl2
TmCl3 | YbCl2
YbCl3
**  | AcCl3 | ThCl3
ThCl4 | PaCl4
PaCl5 | UCl3
UCl4
UCl5
UCl6 | NpCl3
NpCl4 | PuCl3 | AmCl2
AmCl3 | CmCl3 | BkCl3 | CfCl3
CfCl2 | EsCl2
EsCl3 | FmCl2 | MdCl2 | NoCl2
*[CID]: Compound ID
*[EPA]: U.S. Environmental Protection Agency
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