Preparation of imine complexes of ruthenium and osmium stabilised by [MCl(η 6-p-cymene)(PR3)]+ fragments
摘要:
Imine complexes [MCl(eta (6)-p-cymene){eta(1)-NH=C(H)Ar}(PR3)]BPh4 (1-3) [M = Ru, Os; PR3 = PPh(OEt)(2), PPh2OEt; Ar = Ph, p-tolyl] were prepared by reacting MCl2(eta (6)-p-cymene)(PR3) precursors with benzyl azide ArCH2N3 in the presence of NaBPh4. Benzophenone-imine complexes [MCl(eta (6)-p-cymene){eta(1)-NH=CPh2}(PR3)]BPh4 (4-6) [M = Ru, Os; PR3 = PPh(OEt)(2), PPh2OEt] were also prepared by allowing MCl2(eta 6-p-cymene)(PR3) to react with Ph2C=NH in the presence of NaBPh4. The complexes were characterised spectroscopically (IR, H-1, C-13, P-31, N-15 NMR) and by X-ray crystal structure determination of [RuCl(eta (6)-p-cymene){eta(1)-NH=C(H)-p-tolyl}{PPh(OEt)(2)}]BPh4 (1b). (C) 2009 Elsevier B.V. All rights reserved.