Zusammenfassung
The chiral-at-metal cycloheptatrienyl-molybdenum complexes (R-Mo,Sc)-[(eta(7)-C7H7)Mo(iminphos)(CO)]BF4 (2a) and (S-Mo,S-C)-[(eta(7)-C7H7)Mo(iminphos)(CO)]BF4 (2b) (iminphos = 2-[N(S)-1-phenylethylcarbaldimino]phenyl(diphenyl)phosphane), which only differ in the molybdenum configuration, were prepared and separated by fractional crystallization. The absolute configuration for both diastereomers ...
Zusammenfassung
The chiral-at-metal cycloheptatrienyl-molybdenum complexes (R-Mo,Sc)-[(eta(7)-C7H7)Mo(iminphos)(CO)]BF4 (2a) and (S-Mo,S-C)-[(eta(7)-C7H7)Mo(iminphos)(CO)]BF4 (2b) (iminphos = 2-[N(S)-1-phenylethylcarbaldimino]phenyl(diphenyl)phosphane), which only differ in the molybdenum configuration, were prepared and separated by fractional crystallization. The absolute configuration for both diastereomers was determined by X-ray analysis. H-1 NMR studies demonstrated the configurational lability at the molybdenum centre in solution.