%0 Journal Article %A Sun, Yimin %A Piers, Warren E. %A Rettig, Steven J. %D 1996 %T Reactions of Bis(pentafluorophenyl)borane with Phosphine Olefin Complexes of Zirconocene %U https://acs.figshare.com/articles/journal_contribution/Reactions_of_Bis_pentafluorophenyl_borane_with_Phosphine_Olefin_Complexes_of_Zirconocene/3777969 %R 10.1021/om960422a.s001 %2 https://ndownloader.figshare.com/files/5888862 %K 2 equiv %K BH %K RCH %K HB %K Zirconocene %K CH %K Et %K Phosphine Olefin Complexes %K pentacoordinated carbon %K Cp %K Zr %X Zirconocene olefin complexes Cp2Zr(PPh2Me)(η2-RCHCH2) (R = H, Et, Ph) react rapidly with 2 equiv of [HB(C6F5)2]n to give the zwitterionic products Cp2Zr{η3-[CH(R)CH2BH(C6F5)2]} (R = H (2a), Et (2b), Ph (2c)) and the borane−phosphine adduct Ph2MeP· HB(C6F5)2. Spectroscopic and structural evidence confirms an interaction between zirconium and the β-carbon attached to boron, resulting in pentacoordinated carbon. %I ACS Publications