Metallkomplexe mit biologisch wichtigen Liganden, LXXV. Synthese metallorganischer Cobalt(III)-, Iridium(III)- und Ruthenium(II)-Komplexe mit α-Iminocarboxylat-Liganden Metal Complexes of Biologically Important Ligands, LXXV. Synthesis of Organometallic Cobalt(III), Iridium(III) and Ruthenium(II) Complexes with α-Iminocarboxylate Ligands

The α-iminocarboxylato chelate complexes RuH(CO)[OOC-C(R )=N-R ](PPh (1), η -p-cymene)RuCl[OOC-C(R)=N-CH CO Me] (3) and Cp*CoI[OOC-C(R )= N-R ] (4) have been obtained from RuHCl(CO)(PPh , [(η -p-cymene)RuCl ] and Cp*Co(CO)I , respectively and 2-oxocarboxylate/amine. The structure of (η -p-cymene)RuCl[OOC-C(CH )= N-CH CO Me] (3a) has been determined by X-ray diffraction. By use of diamines the corresponding dinuclear cobalt and iridium complexes (5, 6) are formed from 2-oxocarboxylate and Cp*Co(CO)I or [Cp*IrCl