Diphenyl ditelluride

Diphenyl ditelluride
Names
	Preferred IUPAC name 1,1′-Ditellanediyldibenzene
	Other names Phenylditelluride; Diphenylditelluride
Identifiers
CAS Number	32294-60-3 ;
3D model (JSmol)	Interactive image; Interactive image;
ChEMBL	ChEMBL4540731;
ChemSpider	90943 ;
ECHA InfoCard	100.046.332
EC Number	250-982-1;
PubChem CID	100657;
CompTox Dashboard (EPA)	DTXSID1043916 ;
	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/cm3
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
	Occupational safety and health (OHS/OSH):
Main hazards	Toxic
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H312, H315, H319, H332, H335
Precautionary statements	P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P312, P304+P340, P305+P351+P338, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P403+P233, P405, P501
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). verify (what is ?) 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^[2] and as a catalyst for redox reactions.^[3] The compound is a strong nucleophile, easily displacing halides. It also adds electrophilically across multiple bonds, and traps radicals.^[4]

Preparation

Ph₂Te₂ is prepared by the oxidation of tellurophenolate, which is generated via the Grignard reagent:^[5]

PhMgBr + Te → PhTeMgBr

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

The molecule has C₂ symmetry.

^ "Diphenyl ditelluride". pubchem.ncbi.nlm.nih.gov. Retrieved 23 December 2021.
^ Mohan, Balaji; Yoon, Chohye; Jang, Seongwan; Park, Kang Hyun (2015). "Copper Nanoparticles Catalyzed Se(Te)-Se(Te) Bond Activation: A Straightforward Route Towards Unsymmetrical Organochalcogenides from Boronic Acids". ChemCatChem. 7 (3): 405–412. doi:10.1002/cctc.201402867. ISSN 1867-3880. S2CID 97000699.
^ Alberto, Eduardo E.; Muller, Lisa M.; Detty, Michael R. (2014). "Rate Accelerations of Bromination Reactions with NaBr and H₂O₂ via the Addition of Catalytic Quantities of Diaryl Ditellurides". Organometallics. 33 (19): 5571–5581. doi:10.1021/om500883f.
^ Crich, David; Yao Qingwei. "Diphenyl ditelluride". Encyclopedia of Reactants for Organic Synthesis. doi:10.1002/047084289X.rd416.
^ Crich, D.; Yao, Q. "Diphenyl Ditelluride" in Encyclopedia of Reagents for Organic Synthesis (Ed: L. Paquette) 2004, J. Wiley & Sons, New York. doi:10.1002/047084289X.rd416.