Hydrocarbon bridged metal complexes, XLIV. Donor-acceptor substituted Schiff bases of polyenes with transition metals

Schiff bases 1-10 were obtained by condensation of L-valine and o-aminophen ol with donor and ferrocenyl substituted carotinoid aldehydes. From these S chiff bases and chloro-bridged complexes [(R3P)(Cl)M(mu-Cl)](2) (M =Pd, Pt) , [(eta(5)-C5Me5) (Cl)Ir(mu-Cl)](2) and [(p-cymene) (Cl)Ru(mu-Cl)](2) a ser ies of mono and heterobimetallic compounds 11-45 was synthesized. The struc tures of [p-MeO-C6H4-CH=N-C6H4-O-Ru (Cl) (p-cymene)] 16, [ferrocenyl-CH=N-C 6H4-O-Ir (Cl) (Cp*)] 23, [(p-Me2NC6H4-CH=CH-C(Me)=CH-CH=CH-CH=C(Me)-CH=N-C6 H4-O-Pd(Cl)PEt3] 42 and of the condensation product from [(eta(6)-aniline)C r(CO)(3)(-)] with 9-ferrocenyl-2,7-dimethylnonatetraene-1-al 46 were determ ined by X-ray diffraction. (C) 1998 Elsevier Science Ltd. All rights reserv ed.