The new Pd-MOP acetyl acetonate complexes [Pd(acac)(10a or 10b)]BF4, 12a,b, were prepared starting from [Pd(acac)(CH3CN)(2)]BF4, whereas [Pd(acac)(11-H)], 13, was obtained directly from Pd(acac)(2) by adding 11. [Ligand 10a, MeO-MOP = (R)-2-(diphenylphosphino)-2'-methoxy-1,1'-binaphthyl; ligand 11, HO-MOP = (R)-2-(diphenylphosphino)-2'-hydroxy-1,1'-binaphthyl]. The solid-state structures for cationic 12a and neutral 13 were determined via X-ray diffraction methods and reveal that both structures contain Pd-C sigma-bonds arising from the MOP naphthyl backbone. In structure 13, the hydroxyl function in 11 has lost a proton to afford a keto-anionic chelating ligand. C-13 NMR studies confirm that the solution structures are the same as those found in the solid state and, for 12, describe how the organic cation distributes the positive charge.
Pd-(MOP) chemistry: Novel bonding modes and interesting charge distribution / P. Dotta, P. Kumar, P. Pregosin, A. Albinati, S. Rizzato. - In: ORGANOMETALLICS. - ISSN 0276-7333. - 22:25(2003), pp. 5345-5349.
Pd-(MOP) chemistry: Novel bonding modes and interesting charge distribution
A. AlbinatiPenultimo
;S. RizzatoUltimo
2003
Abstract
The new Pd-MOP acetyl acetonate complexes [Pd(acac)(10a or 10b)]BF4, 12a,b, were prepared starting from [Pd(acac)(CH3CN)(2)]BF4, whereas [Pd(acac)(11-H)], 13, was obtained directly from Pd(acac)(2) by adding 11. [Ligand 10a, MeO-MOP = (R)-2-(diphenylphosphino)-2'-methoxy-1,1'-binaphthyl; ligand 11, HO-MOP = (R)-2-(diphenylphosphino)-2'-hydroxy-1,1'-binaphthyl]. The solid-state structures for cationic 12a and neutral 13 were determined via X-ray diffraction methods and reveal that both structures contain Pd-C sigma-bonds arising from the MOP naphthyl backbone. In structure 13, the hydroxyl function in 11 has lost a proton to afford a keto-anionic chelating ligand. C-13 NMR studies confirm that the solution structures are the same as those found in the solid state and, for 12, describe how the organic cation distributes the positive charge.Pubblicazioni consigliate
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