Alkyl dehydrogenation in a Rh(I) complex via an isolated agostic intermediate.

Alkyl dehydrogenation in a Rh(I) complex via an isolated agostic intermediate.

A well-characterised 14-electron rhodium phosphine complex, [Rh(PiPr3)3][BArF4], which contains a beta-CH agostic interaction, is observed to undergo spontaneous dehydrogenation to afford [Rh(PiPr3)2(PiPr2(C3H5))][BArF4]; calculations on a model system show that while C-H activation is equally acces...

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Detaylı Bibliyografya
Asıl Yazarlar: Chaplin, AB, Poblador-Bahamonde, A, Sparkes, H, Howard, J, Macgregor, SA, Weller, A
Materyal Türü: Journal article
Dil:English
Baskı/Yayın Bilgisi: 2009
Diğer Bilgiler
Özet:A well-characterised 14-electron rhodium phosphine complex, [Rh(PiPr3)3][BArF4], which contains a beta-CH agostic interaction, is observed to undergo spontaneous dehydrogenation to afford [Rh(PiPr3)2(PiPr2(C3H5))][BArF4]; calculations on a model system show that while C-H activation is equally accessible from the beta-CH agostic species or an alternative gamma-CH agostic isomer, subsequent beta-H-transfer can only be achieved along pathways originating from the beta-CH agostic form.

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