A chiral alkyltris(pyrazolyl)borate ligand: synthesis of [(Ipc)B(pz)3Mn(CO)3] and [(Ipc)B(pz)3Ru(p-cymene)]PF6 (Ipc = Isopinocampheyl) |
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Authors: | Bailey Philip J Pinho Pedro Parsons Simon |
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Institution: | Department of Chemistry, The University of Edinburgh, The Kings Buildings, West Mains Road, Edinburgh EH9 3JJ, U.K. |
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Abstract: | The application of the reagent (Ipc)BCl(2) (Ipc = isopinocampheyl) in the synthesis of a new tris(pyrazolyl)borate ligand having an Ipc substituent on boron is described. The sodium salt is a convenient precursor for the preparation of the complexes (Ipc)tris(pyrazolyl)borato]tricarbonylmanganese and (Ipc)tris(pyrazolyl)borato](p-cymene)ruthenium](+), whose X-ray crystal structures are reported. While little distortion of the B(pz)(3)M unit is observed in these complexes, steric interaction between the Ipc group and the 3-positions of the pyrazolyl rings is noted to lead to distortion of the angles around the B-C bond. |
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