Mechanism of the Lithium-Tellurium, Lithium-Iodine and Lithium-Mercury Exchange Reactions: Hypervalent Tellurium and Iodine Ate Complexes

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 mercury ate complexes are formed when diphenyl telluride, iodobenzene or diphenylmercury are treated with phenyllithium in THF....

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Veröffentlicht in:Phosphorus, sulfur and silicon and the related elements (Print) sulfur and silicon and the related elements (Print), 1992-04, Vol.67 (1-4), p.83-97
Hauptverfasser: Reich, H. J., Green, D. P., Phillips, N. H., Borst, J. P., Reich, I. L.
Format: Artikel
Sprache:eng
Schlagworte:
Alkali and alkaline-earth metals derivatives
Chemistry
Exact sciences and technology
Organic chemistry
Organometalloidal and organometallic compounds
Preparations and properties
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Zusammenfassung: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 mercury 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.
ISSN:1042-6507
1563-5325
DOI:10.1080/10426509208045823