Oxidative addition of (bromoethynyl)benzene to κ2- acetylacetonatobis(trimethylphosphine)rhodium(I)

• Main Authors: Marie-Hélène, Thibault, Tay, Meng Guan, Andrei S, Batsanov, Judith AK, Howard, Todd B, Marder
• Format: E-Article
• Language: English
• Published: Elsevier 2013
• Subjects: QC Physics; QD Chemistry
• Online Access: http://ir.unimas.my/id/eprint/7404/1/Oxidative%20addition%20of%20%28bromoethynyl%29benzene%20to%202-acetylacetonato%20bis%28trimethylphosphine%29%20rhodium%28I%29%20-%20%28abstract%29.pdf; http://ir.unimas.my/id/eprint/7404/; http://www.sciencedirect.com/science/article/pii/S0022328X12006778

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.