Carbene‐Stabilized Phosphenium Oxides and Sulfides
作者: Carine MaalikiDr. Christine LepetitCarine DuhayonDr. Yves CanacProf. Remi Chauvin
作者单位: 1CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, F‐31077 Toulouse (France), Fax: (+33) 561‐55‐30‐03
2 Université de Toulouse, UPS, INP, LCC, F‐31077 Toulouse (France)
3 CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, F‐31077 Toulouse (France), Fax: (+33) 561‐55‐30‐03
刊名: Chemistry – A European Journal, 2012, Vol.18 (50), pp.16153-16160
来源数据库: Wiley Journal
DOI: 10.1002/chem.201202279
关键词: carbenesdative bondsexchange interactionsphosphenium compoundsstabilization
原始语种摘要: Abstract(#br)Carbene→chalcogenophosphenium adducts, which correspond to an intermolecular stabilization mode of the so far elusive, free oxo‐ and thiooxophosphenium species [R2P+ = X] (X=O, S) by imidazolylidene (NHC) and diaminocyclopropenylidene (BAC) donors, have been isolated and fully characterized. The dative character of the R2C:→P+(X)Ph2 bond was confirmed experimentally by nucleophilic displacement of the carbene donor with a chloride ion and by an exchange reaction of the NHC ligand of the NHC:→P+(O)Ph2 adduct with an independently prepared BAC ligand, thereby giving the BAC:→P+(O)Ph2 adduct. This dative character was further characterized by the DFT‐calculated preference of...
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