| Autor: |
Smith, J. M., Lachicotte, R. J., Holland, P. L. |
| Zdroj: |
Organometallics; October 2002, Vol. 21 Issue: 22 p4808-4814, 7p |
| Abstrakt: |
The preparation of a series of three-coordinate, 12-electron organometallic complexes of iron(II) supported by a bulky β-diketiminate ligand is described. The thermally stable complexes LFeR (R = Et, CH2tBu, iPr) are three-coordinate in both the solid state (single crystal X-ray diffraction) and solution. They react rapidly with CO to form the diamagnetic complexes LFe(CO)2(COR), which have an unusual square-pyramidal geometry. Spectroscopic and crystallographic studies show that the acyl group is in the axial position. As a result, there are two orientations of the acyl group about the Fe−C bond, and the isomeric ratio is dependent on the size of R. The two isomers are in equilibrium in solution at room temperature. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
