Gemischte Sandwichkomplexe der 4 f-Elemente: Enantiomerenreine Cyclooctatetraenyl-Cyclopentadienyl-Komplexe des Samariums und Lutetiums mit donorfunktionalisierten Cyclopentadienylliganden
摘要:
The reactions of [K{(S)-C5H4CH2CH(Me)OMe}], [K{(S)-C5H4CH2CH(Me)Me-2}] and [K{(S)-C5H4CH(Ph)CH2NMe2}] with the cyclooctatetraenyl lanthanide chlorides [(eta(8)-C8H8)Ln(mu-Cl) (THF)](2) (Ln=Sm, Lu) yield the mixed cyclooctatrtraenyl cyclopentadienyl lanthanide complexes [(eta(8)-C8H8)Sm{(S)-eta(5):eta(1)-C5H4CH2CH(Me)OMe}] (1a), [(eta(8)-C8H8)Ln{(S)-eta(5): eta(1)-C5H4CH2CH(Me)NMe2}] (Ln = Sm (2a), Lu (2b)) and [(eta(8)-C8H8)Ln{(S)-eta(5):eta(1)-C5H4CH(Ph)- CH2NMe2}] (Ln = Sm (3a), Lu (3b)). For comparison, the achiral compounds [(eta(8)-C8H8)Ln{eta(5): eta(1)-C5H4CH2CH2NMe2}] (Ln = Sm (4a), Lu (4b)) are synthesized in an analogous manner. H-1-, C-13-NMR-, and mass spectra of all new compounds as well as the X-ray crystal structures of 3b and 4b are discussed.