Isolation and crystallographic characterization of solvate- and anion-stabilized PCP pincer complexes of palladium(II)
摘要:
Pincer PCP-Pd(II) complex [PdCl(PCP)] (1) (PCP = -CH(CH2CH2PPh2)(2)) reacts with AgNO3 to give [Pd(NO3)(PCP)] (2). Similar reaction with AgBF4 gives the aqua complex [Pd(OH2)(PCP)][BF4] (3) and the dinuclear complex [{Pd(PCP)}(2)(mu-Cl)][BF4] (4) with singly bridging chloro ligand. All new complexes were characterized by NMR spectroscopy, ESI-MS and single-crystal X-ray diffraction. Complex 1 and the triflate complex [Pd(OTf)(PCP)] (5) are active towards Suzuki-Miyaura coupling between aryl bromides and phenyl boronic acid. (C) 2007 Elsevier B.V. All rights reserved.
Isolation and crystallographic characterization of solvate- and anion-stabilized PCP pincer complexes of palladium(II)
摘要:
Pincer PCP-Pd(II) complex [PdCl(PCP)] (1) (PCP = -CH(CH2CH2PPh2)(2)) reacts with AgNO3 to give [Pd(NO3)(PCP)] (2). Similar reaction with AgBF4 gives the aqua complex [Pd(OH2)(PCP)][BF4] (3) and the dinuclear complex [{Pd(PCP)}(2)(mu-Cl)][BF4] (4) with singly bridging chloro ligand. All new complexes were characterized by NMR spectroscopy, ESI-MS and single-crystal X-ray diffraction. Complex 1 and the triflate complex [Pd(OTf)(PCP)] (5) are active towards Suzuki-Miyaura coupling between aryl bromides and phenyl boronic acid. (C) 2007 Elsevier B.V. All rights reserved.