Abstract
The reactions of cysteine ethyl ester with a series of triosmium clusters have been studied. Enantiomeric (μ-H)Os3{μ-SCH2CH(CO2Et)NH2}(CO)10 and diastereomeric (μ-H)Os3{μ-η2-SCH2CH(CO2Et)NH2}(CO)9 forms of the optically active cluster complexes have been obtained. Diastereomeric clusters have been separated by TLC on Silufol plates. The treatment of the enantiomeric complex (μ-H)Os3{μ-SCH2CH(CO2Et)NH2}(CO)10 with the trimethylamine oxide yields the diastereomeric pair (μ-H)Os3{μ-η2-SCH2CH(CO2Et)NH2}(CO)9. The structures of the complexes obtained have been established on the basis of IR,1H NMR and mass spectrometry as well as X-ray analysis data.
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