| Autor: |
Bao, J., Park, S.-H. K., Geib, S. J., Cooper, N. J. |
| Zdroj: |
Organometallics; August 2003, Vol. 22 Issue: 16 p3309-3312, 4p |
| Abstrakt: |
The iminium salt [Me2N&dbd;CMe2][BF4] (4BF4) adds to the reductively activated η4-benzene ligand in [Cr(η4-C6H6)(CO)3]2- (22-) to give the aminoalkyl-substituted η5-cyclohexadienide Cr(0) complex [Cr(η5-C6H6)(CMe2NMe2)(CO)3]- (5-). The unusual upfield chemical shift in NMR spectra of the methyl protons and carbons, which are positioned right above the cyclohexadienide ligand by an exo-addition, suggests a magnetic shielding effect indicative of a modest ring current despite the open conjugation of the cyclohexadienyl ligand. The analogous Mn(1) complex [Mn(η5-C6H6)(CMe2NMe2)(CO)3] (6) has been crystallographically characterized. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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