Diphenyl ditelluride

Diphenyl ditelluride

Names
IUPAC name Diphenylditelluide
Other names Phenylditelluride
Identifiers
CAS Number	32294-60-3
ChemSpider	90943
Jmol interactive 3D	Image Image
PubChem	100657
InChI InChI=1S/C12H10Te2/c1-3-7-11(8-4-1)13-14-12-9-5-2-6-10-12/h1-10H Key: VRLFOXMNTSYGMX-UHFFFAOYSA-N InChI=1/C12H10Te2/c1-3-7-11(8-4-1)13-14-12-9-5-2-6-10-12/h1-10H Key: VRLFOXMNTSYGMX-UHFFFAOYAJ
SMILES C1([Te][Te]C2=CC=CC=C2)=CC=CC=C1 [Te]([Te]c1ccccc1)c2ccccc2
Properties
Chemical formula	C12H10Te2
Molar mass	409.42 g/mol
Appearance	Orange powder
Density	2.23 g/cm^3
Melting point	66 to 67 °C (151 to 153 °F; 339 to 340 K)
Boiling point	decomposes
Solubility in water	Insoluble
Solubility in other solvents	Dichloromethane
Structure
Coordination geometry	90° at Se C2 symmetry
Dipole moment	0 D
Hazards
Main hazards	Toxic
R-phrases	20/21/22-36/37/38
S-phrases	26-36
Related compounds
Related compounds	Ph2S2, Ph2Se2
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Diphenylditelluride is the chemical compound with the formula (C₆H₅Te)₂, abbreviated Ph₂Te₂ This orange-coloured solid is the oxidized derivative of the unstable benzenetellurol, PhTeH. Ph₂Te₂ is used as a source of the PhTe unit in organic synthesis.

Preparation

Ph₂Te₂ is prepared by the oxidation of tellurophenolate, which is generated via the Grignard reagent:^[1]

PhMgBr + Te → PhTeMgBr

2PhTeMgBr + 0.5 O₂ + H₂O → Ph₂Te₂ + 2 MgBr(OH)

The molecule has C₂ symmetry.

References

1. Crich, D.; Yao, Q. "Diphenyl Ditelluride" in Encyclopedia of Reagents for Organic Synthesis (Ed: L. Paquette) 2004, J. Wiley & Sons, New York. doi:10.1002/047084289.