η 4‐Complexes of 4,7‐Dihydroacepentalene
Facile Degenerate Haptotropic Rearrangement of (η5‐Cyclopentadienyl)(η4‐4,7‐dihydroacepentalene)cobalt(I) in Contrast to its Tricarbonyliron Counterpart
- verfasst von
- Günter Schröder, Holger Butenschön, Roland Boese, Tomas Lendvai, Armin De Meijere
- Abstract
The (cyclopentadienyl)cobalt(I) complex 4 of the 4,7‐dihydroacepentalene derivative 2b has been prepared by the reaction of the ligand with (cyclopentadienyl)bis(ethene)cobalt(I). NOE experiments indicate a complexation at the convex face of the polyolefinic ligand. 1H‐NMR spectra establish a degenerate haptotropic rearrangement with CpCo migration from one diene unit to the adjacent one. The activation energy of this process is estimated to be 15 kcal/mol. An X‐ray crystal structure determination of (η4‐4,7‐dihydroacepentalene)tricarbonyliron derivative 3a shows a distorted coordination of Fe(CO)3 at the convex face of the ligand, too.
- Externe Organisation(en)
-
Max-Planck-Institut für Kohlenforschung
Universität Duisburg-Essen
Universität Hamburg
- Typ
- Artikel
- Journal
- Chemische Berichte
- Band
- 124
- Seiten
- 2423-2427
- Anzahl der Seiten
- 5
- ISSN
- 0009-2940
- Publikationsdatum
- 11.1991
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Allgemeine Chemie
- Elektronische Version(en)
-
https://doi.org/10.1002/cber.19911241108 (Zugang:
Unbekannt)
