Abstract
The complexes [(η 6- p- i PrC 6H 4Me)Ru(NO 2pesa)Cl] 2, [(η 6- p- i PrC 6H 4Me)Ru(oxazsa)Cl] 3 and [(η 6- p- i PrC 6H 4Me)Ru(pepy)Cl] 4, chiral in the chelate ligand and chiral at the ruthenium atom, have been prepared by reaction of [(η 6- p- i PrC 6H 4Me)RuCl 2] 2 with the anions of the ( S)-configured bidentate N, O- and N, N-ligands. [(η 6- p- i PrC 6H 4Me)Ru(pesa)I] 5 was synthesized by halide exchange. The diastereomer ratios of compounds 2– 4 with respect to the stereogenic ruthenium atom are in CDCl 3 2a: 2b=81:19, 3a: 3b=77:23 and 4a: 4b=61:39. Compound 5 is obtained diastereomerically pure. An X-ray structure analysis of 3 shows ( R Ru, S C)-configuration
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