New group 10 complexes of the bulky iminophosphineligands [Ph2PCH2C(Ph)N(2,6-R2C6H3)], where R = Me, iPr

Abstract

New neutral and cationic complexes [NiBr₂(L1)] (1), [NiBr₂(OPHPh₂)(L1)] (2), [NiMe₂(L1)] (3), [NiBr(PMe₃)(L1)](Br) (4), [Ni(CH₃CN)(PMe₃)(L1)](BF₄)₂ (5), [PdBr₂(L2)] (6), [PdI₂(L1)] (7), [PtMeCl(L1)] (8), [PtMe₂(L1)] (9), [Pt(CH₃CN)₂(L1)](BF₄)₂ (10), [Pt(L1)₂](X)₂ [X = Cl (11a), Br (11b)], [PtX(L1)₂](X) [X = Cl (12a), Br (12b)], where L1: [Ph₂PCH₂C(Ph)N(2,6-Me₂C₆H₃)₂] and L2: [Ph₂PCH₂C(Ph)N(2,6-ⁱPr₂C₆H₃)₂], have been prepared and characterised. The molecular structures of 1, 2, 6, 7 and 9 have been determined. The complexes [PdBr₂(L2)] (6), [PdBr₂(L1)] and [PdMeCl(L1)] have been found to catalyse the Heck coupling of 4-bromoacetophenone with n-butyl acrylate under aerobic conditions.