Dual Supermesityl Stabilization: A Room‐Temperature‐Stable 1,2,4‐Triphosphole Radical, Sigmatropic Hydrogen Rearrangements, and Tetraphospholide Anion

Autor:	Fredric Davidson, Brian M. Fish, Laurie A. Howe, William J. Marshall, Charles N. McEwen, Alexander A. Marchione, Alex Sergey Ionkin
Rok vydání:	2008
Předmět:	Inorganic Chemistry chemistry Hydrogen Caesium Inorganic chemistry chemistry.chemical_element Aromaticity Sigmatropic reaction Photochemistry Kinetic energy Ion
Zdroj:	European Journal of Inorganic Chemistry. 2008:2386-2390
ISSN:	1099-0682 1434-1948
DOI:	10.1002/ejic.200800265
Popis:	Cesium 3,5-bis(2,4,6-tri-tert-butylphenyl)-1,2,4-triphospholide (12) and cesium 5-(2,4,6-tri-tert-butylphenyl)tetraphospholide (13) were synthesized and isolated with flat five-membered rings, which are an indication of the aromaticity in these anions. Compound 13 is the first example of a stable tetraphospholide anion, which is structurally characterized. Kinetic stabilization of the 1,2,4-triphospholide system by two supermesityl groups resulted in the detection of the room-temperature-stable radical 17 and the observation of a series of successive sigmatropic hydrogen shifts in the first stable 1H-1,2,4-triphosphole 14 with a P–H bond.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
Databáze:	OpenAIRE
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