Reactions of free cyclopentadienyl radicals. 3 Metallocenes of samarium, europium, and ytterbium with the especially bulky cyclopentadienyl ligands C5H(CHMe2)4, C5H2(CMe3)3, and C5(CHMe2)5
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
Octaisopropylmetallocenes of the lanthanoids Sm (1-Sm), Eu (1-Eu), and Yb (1-Yb) can be obtained easily from the diiodides of the rare earth elements. Like the hexa-(tert.-butyl)metallocenes 2-Sm, 2-Eu, and 2-Yb, they show no tendency towards coordination of donor solvent molecules or alkali salts. The decaisopropylmetallocenes 3-Sm, 3-Eu und 3-Yb have been synthesized from the metal and the free pentaisopropylcyclopentadienyl radical. The three europocenes 1-Eu, 2-Eu, and 3-Eu show fluorescence in daylight or under UV irradiation (336 nm). Crystalline 1-Eu and 2-Eu are bent sandwich complexes, whereas for the decaisopropyl derivative 3-Eu axial symmetry with parallel five-membered rings has been observed.
Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 2241-2244 |
| Seitenumfang | 4 |
| Fachzeitschrift | Zeitschrift fur Anorganische und Allgemeine Chemie |
| Jahrgang | 626 |
| Ausgabenummer | 11 |
| Publikationsstatus | Veröffentlicht - 2000 |
| Peer-Review-Status | Ja |
| Extern publiziert | Ja |
Externe IDs
| ORCID | /0000-0002-2391-6025/work/166325874 |
|---|
Schlagworte
ASJC Scopus Sachgebiete
Schlagwörter
- Europocene, Fluorescence, Pentaisopropylcyclopentadienyl, Samarocene, Tetraisopropylcyclopentadienyl, Tri(tert.-butyl)cyclopentadienyl, Ytterbocene