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Diphenyl ditelluride

Diphenyl ditelluride

General
Systematic name	Diphenylditelluide
Other names	Phenylditelluride
Molecular formula	C₁₂H₁₀Te₂
SMILES	C1(TeTeC2=CC=CC=C2)=CC=CC=C1
Molar mass	409.42 g/mol
Appearance	Orange powder
CAS number	[32294-60-3]
Properties
Density and phase	2.23 g/cm³
Solubility in water	Insoluble
Other solvents	Dichloromethane
Melting point	66-67 °C
Boiling point	decomp.
Structure
Coordination geometry	90° at Se C₂ symmetry
Dipole moment	0 D
Hazards
MSDS	External MSDS
Main hazards	Toxic
NFPA 704
R/S statement	R: 20/21/22-36/37/38 S: 26-36
RTECS number
Supplementary data page
Structure and properties	n, ε_r, etc.
Thermodynamic data	Phase behaviour Solid, liquid, gas
Spectral data	UV, IR, NMR, MS
Related compounds
Related compounds	Ph₂S₂, (Ph₂Se₂
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and 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.

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Preparation

Ph₂Te₂ is prepared by the oxidation of phenyltelluroate, 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.

Safety

Organotellurium compounds are toxic.

References

^ 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.

Categories: Tellurium compounds | Aromatic compounds