- Abstract:
-
The isopropyl chloro complex Tp(Me2)NbCl(i-Pr)(PhCandtbd1;CMe) (2) [Tp(Me2) = hydrotris(3,5-dimethylpyrazolyl)borate] exhibits a beta-agostic structure in the crystal. The conformation of the alkyl group is such that the agostic methyl group lies in the Calpha-Nb-Cl plane and the nonagostic one, in a wedge formed by two pyrazole rings. As observed by solution NMR spectroscopy, restricted rotation about the Nb-C bond allows the observation of an equilibrium between this species, 2beta, and a m...
Expand abstract - Publication status:
- Published
- Publisher copy:
- 10.1021/ja0038169
-
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- Journal:
- Journal of the American Chemical Society
- Volume:
- 123
- Issue:
- 25
- Pages:
- 6000-6013
- Publication date:
- 2001-06-05
- DOI:
- EISSN:
-
1520-5126
- ISSN:
-
0002-7863
- URN:
-
uuid:91cff300-27ea-477d-9cdd-11873ddc1b10
- Source identifiers:
-
51660
- Local pid:
- pubs:51660
- Language:
- English
- Copyright date:
- 2001
Journal article
Equilibria between alpha- and beta-agostic stabilized rotamers of secondary alkyl niobium complexes.
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