Optisch aktive Übergangsmetall-Komplexe, LIX (+)436- und (—)436-C5H5Fe(CO)(COCH3)Pø2R*. Das Gleichgewicht C5H5Fe(CO)2CH3 + PR3 ⇄ C5H5Fe(CO)(COCH3)PR3

Abstract

Abstract The pair of diastereoisomers (+)436-and (-)436-C5H5Fe(CO)(COCH3)PØ2R*, with PØ2R* = (S)-(+)-(C6H5)2PN(CH3)CH(CH3)(C6H5), can be separated into its components by preparative liquid chromatography under pressure. On heating (+)436-C5H5Fe(CO)-(COCH3)PØ2R* equilibrates with C5H5Fe(CO)2CH3 and PØ2R* before epimerization at the Fe atom takes place. In the same way, the equilibrium C5H5Fe(CO)(COCH3)P(C6H5)3 ⇄ C5H5Fe(CO)2CH3 + P(C6H5)3 can be obtained starting from either side. It is shown that the decarbonylation C5H5Fe(CO)(COCH3)P(C6H5)3 → C5H5Fe(CO)(CH3)P(C6H5)3 + CO is not a thermal but a photochemical reaction.