The first evidence for a stereostable centrometalled chirality in a dicyclopentadienyltantalum complex |
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| Institution: | 1. Duke University Medical Center, Durham, NC;2. University of North Carolina School of Medicine, Chapel Hill, NC;3. University of North Carolina School of Public Health, Chapel Hill, NC |
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| Abstract: | Reaction of dichlorophenylphosphine with monohydrides Cp2M(CO)H (M = Nb or Ta) gives the salts Cp2M(CO)(PPhClH(]+ Cl− in good yields. In a basic medium these salts give the neutral complexes Cp2M(CO) P(O)(H)Ph]. In a reaction starting from the chiral hydride Cp* CpTa(CO)H, (Cp* = C5Me5), two diastereoisomers are obtained, and can be isolated as stereostable structures. |
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