OPTICALLY-ACTIVE TRIOSMIUM CLUSTERS CONTAINING THE CYSTEINE LIGAND

Citation
Va. Maksakov et al., OPTICALLY-ACTIVE TRIOSMIUM CLUSTERS CONTAINING THE CYSTEINE LIGAND, Russian chemical bulletin, 42(11), 1993, pp. 1898-1901
Citations number
8
Categorie Soggetti
Chemistry
Journal title
ISSN journal
10665285
Volume
42
Issue
11
Year of publication
1993
Pages
1898 - 1901
Database
ISI
SICI code
1066-5285(1993)42:11<1898:OTCCTC>2.0.ZU;2-S
Abstract
The reactions of cysteine ethyl ester with a series of triosmium clust ers have been studied. Enantiomeric (mu-H)Os3{mu-SCH2CH(CO2Et)NH2}(CO) 10 and diastereomeric (mu-H)Os3{mu-eta2-SCH2CH(CO2Et)NH2}(CO)9 forms o f the optically active cluster complexes have been obtained. Diastereo meric clusters have been separated by TLC on Silufol plates. The treat ment of the enantiomeric complex (mu-H)Os3{mu-SCH2CH(CO2Et)NH2}(CO)10 with the trimethylamine oxide yields the diastereomeric pair (mu-H)Os3 {mu-eta2-SCH2CH(CO2Et)NH2}(CO)9. The structures of the complexes obtai ned have been established on the basis of IR, H-1 NMR and mass spectro metry as well as X-ray analysis data.