64109-07-5

Upstream product

• 1206-36-6 diphenyltellurium dichloride 
• 591-51-5 phenyllithium 
• 591-50-4 iodobenzene 
• 14683-12-6 tellurium 
• 595-90-4 tetraphenyltin(IV) 
• 1202-36-4 diphenyl telluride 
• 131407-18-6 Diphenyltelluronium-4,5-dicyanimidazol-2-ylid 
• 131636-18-5 lithium triphenyltellurate 
• 31426-14-9 triphenyltelluronium chloride 

Downstream Products

• 92-52-4 biphenyl 
• 1202-36-4 diphenyl telluride 
• 71-43-2 benzene 
• 613-33-2 (4,4'-dimethyl-1,1'-biphenyl) 
• 644-08-6 4-Methylbiphenyl 
• 56950-00-6 1-phenyl-4-(phenyltelluro)benzene 
• 1486-01-7 biphenyl-d10 
• 20637-23-4 2,3,4,5,6-pentadeuterio-biphenyl 
• 49690-36-0 triphenyltelluronium bromide 
• 185515-89-3 hexaphenyltellurium 
• 98-87-3 benzylidene dichloride 
• 31426-14-9 triphenyltelluronium chloride 

Relevant academic research and scientific papers

Tellurium-125 Moessbauer and NMR data for tetraphenyltellurium and bis(2,2'-biphenylylene)tellurium

The 125Te solution NMR chemical shifts of Ph4Te (508.9 ppm) and C12H8)2Te (486.3 ppm) have been measured at ambient temperature, together with the 125Te moessbauer parameters for the neat solids: Ph4Te (δ 0.09, Δ 5.60 mm s-1), (C12H8)2Te (δ 0.4

Systematic synthesis and crystal structures of tetraaryltellurium compounds Ar4TeIV

Hypervalent tetraaryltellurium(IV) compounds of the type Ar4TeIV(1: Ar = C6H5; 2: Ar = p-H3CC6H4; 3: Ar = p-t-BuC6H4; 4: Ar = p-F3CC6H4) were prepared via a convenient one-pot reaction between the isolated corresponding ArLi reagent and TeCl4. X-ray crystallographic analyses of 14 revealed distorted pseudo-trigonal-bipyramidal (TBP) structures for Ar4Te and the TBP character was analyzed by the dihedral angle method.

MECHANISM OF THE LITHIUM-TELLURIUM, LITHIUM-IODINE AND LITHIUM-MERCURY EXCHANGE REACTIONS: HYPERVALENT TELLURIUM AND IODINE ATE COMPLEXES

The lithium-tellurium exchange is among the fastest of the lithium-metalloid exchange reactions: only the lithium-iodine exchange is slightly faster.Tellurium, iodine and merury ate complexes are formed when diphenyl telluride, iodobenzene or diphenylmercury are treated with phenyllithium in THF.The mechanism of the lithium-tellurium exchange, (as well as the Li/I and Li/Hg) proceeds through such ate complex intermediates.Monomeric phenyllithium is the reactive form of phenyllithium (the dimer does not participate detectably).Tetraphenyltellurium and triphenyliodine also form hypervalent ate complexes under suitable conditions.

Stable Tellurium Ylides: Synthesis and Reactivity of Diorganyltelluronium 4,5-Dicyanoimidazol-2-ylides

Diorganyl tellurides R2Te (R = Me, Me3SiCH2, Ph) react with 2-diazo-4,5-dicyano-2H-imidazole (1) at -30 deg C to form the title compounds 2-4.The ylides 3 and 4 are thermally stable up to their melting points of 159 and 243 deg C, resp., whereas 2 undergoes a modified Steven rearrangement at 190 deg C with formation of a 2-(methyltelluro)imidazole (10).The reactivity of 2-4 is determined by an extreme charge separation between the onium centre and the ylide entity.No Wittig reactivity is observed, alkylation occurs at the imidazole nitrogen and carbanions lead to tetraorganyl tellurium compounds with limited stability.

Mechanism of Thermal Decomposition of Tetra-aryltellurium Species

Tetra-aryltellurium species decompose upon heating giving good yields of diaryl tellurides and biphenyls.Radical-scavenging experiments show that phenyl radicals are not intermediates in the formation of biphenyls.In contrast, cross-over experiments give mixed biphenyls as well as mixed diaryl tellurides, but these are formed by a statistical redistribution of organic groups giving mixed tetra-aryltellurium species which decompose thermally in an indiscrimate fashion.