Preparation of benzophenone imine complexes of transition metals
摘要:
Benzophenone imine [M(eta(1)-NH=CPh2)(CO)(n)P5-n] BPh4 [M = Mn, Re; n = 2, 3; P = P(OEt)(3), PPh(OEt)(2), PPh2OEt, PPh3] complexes were prepared by allowing triflate M(K-1-OTf)(CO)(n)P5-n compounds to react with an excess of the imine. Hydride-imine [MH(eta(1)-NH=CPh2)P-4]BPh4 (M = Ru, Os), triflate-imine [Os(k(1)-OTf)(eta(1)-NH=CPh2)P-4]BPh4 and bis(imine) [Ru(eta(1)-NH= CPh2)(2) P-4](BPh4)(2) [P = P(OEt)(3)] derivatives were also prepared. The complexes were characterized spectroscopically (IR, H-1, P-31, C-13 NMR) and a geometry in solution was also established. Hydride-benzophenone imine [IrHCl(eta(1)-NH=CPh2)LdPPh(3))(2)]BPh4 and [IrHCl(eta(NH)-N-1= CPh2)LdAsPh(3))(2)] BPh4 [L = P(OEt)(3) and PPh(OEt)(2)] complexes were prepared by reacting hydride IrHCl2L(PPh3)(2) and IrHCl2L(AsPh3)(2) precursors with an excess of imine. Dihydride IrH2(eta(1)-NH=CPh2)(PPh3)(3) complex was also obtained and a geometry in solution was proposed. (C) 2006 Elsevier B. V. All rights reserved.