Cleavage of Carbon Monoxide Promoted by a Dinuclear Tantalum Tetrahydride Complex
作者:Joachim Ballmann、Fraser Pick、Ludovic Castro、Michael D. Fryzuk、Laurent Maron
DOI:10.1021/om300759p
日期:2012.12.24
The reaction of one equivalent of carbonmonoxide with the dinuclear tetrahydride complex ([NPN]Ta)2(μ-H)4 (where NPN = PhP(CH2SiMe2NPh)2) results in the cleavage of the CO triple bond and formation of ([NPN]Ta)(μ-O)(μ-H)(Ta[NPN′]) (where NPN′ = PhP(CH2SiMe2NPh)(CH2SiMe2NC6H4)) via extrusion of CH4. The identity of the ditantalum complex was confirmed by single-crystal X-ray analysis, isotopic labeling
Reduction of Carbon Dioxide Promoted by a Dinuclear Tantalum Tetrahydride Complex
作者:Joachim Ballmann、Fraser Pick、Ludovic Castro、Michael D. Fryzuk、Laurent Maron
DOI:10.1021/ic302438f
日期:2013.2.18
The reaction of 1 equiv of carbon dioxide with the dinuclear tetrahydride complex ([NPN]Ta)2(μ-H)4 [where NPN = PhP(CH2SiMe2NPh)2] results in the formation of ([NPN]Ta)2(μ-OCH2O)(μ-H)2 via a combination of migratory insertion and reductiveelimination. The identity of the ditantalum complex containing a methylene diolate fragment was confirmed by single-crystal X-ray analysis, NMR analysis, and isotopic