Tritellurium dichloride

Tritellurium dichloride is the inorganic compound with the formula Te₃Cl₂. It is one of the more stable lower chlorides of tellurium.

Tritellurium dichloride

Identifiers
CAS Number	12526-08-8 Y
3D model (JSmol)	Interactive image
InChI InChI=1S/Cl2Te3/c1-5(2)4-3 Key: TWWCHESXRMILGP-UHFFFAOYSA-N
SMILES Cl[Te](=[Te])(=[Te])Cl
Properties
Chemical formula	Te3Cl2
Molar mass	453.71 g/mol
Appearance	Gray solid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N (what is YN ?) Infobox references

Structure of trans-[TeCl₂(SC(NMe₂)₂)₂] (H atoms omitted).^[1]

Preparation and properties

Te₃Cl₂ is a gray solid. Its structure consists of a long chain of tellurium (Te) atoms, with every third Te center carrying two chloride ligands for the repeat unit -Te-Te-TeCl₂-.^[2] It is a semiconductor with a band gap of 1.52 eV, which is larger than that for elemental Te (0.34 eV).^[3] It is prepared by heating tellurium with the appropriate stoichiometry of chlorine.^[4]