کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1322826 | 1499908 | 2013 | 4 صفحه PDF | دانلود رایگان |
The reaction of (bromoethynyl)benzene with κ2-acetylacetonatobis(trimethylphosphine)rhodium(I), [Rh(acac)(PMe3)2] 1, was followed by in situ1H and 31P NMR spectroscopy. The kinetic product is that of cis-oxidative addition of the C–Br bond to Rh, and this species rearranges to the thermodynamically more stable trans-oxidative addition product trans-[Rh(acac)(Br)(CCPh)(PMe3)2] 3. The structures of both 1 and 3 have been determined by single-crystal X-ray diffraction.
Oxidative addition of the C–Br bond of (bromoethynyl)benzene to κ2-acetylacetonatobis(trimethylphosphine)rhodium(I), [Rh(acac)(PMe3)2] 1, was followed by in situ1H and 31P NMR spectroscopy. The kinetic cis-oxidative addition product rearranges to more stable trans-[Rh(acac)(Br)(CCPh)(PMe3)2] 3. The structures of both 1 and 3 have been determined by single-crystal X-ray diffraction.Figure optionsDownload as PowerPoint slideHighlights
► Oxidative addition of a bromoalkyne to Rh(I) gives the cis kinetic product.
► The cis complex rearranges slowly to the thermodynamically more stable trans-complex.
► The starting material and final product were characterized by X-ray diffraction.
Journal: Journal of Organometallic Chemistry - Volume 730, 15 April 2013, Pages 104–107