| Autor: |
Fillman KL; Department of Chemistry, University of Rochester , Rochester, New York 14627, United States., Bielinski EA, Schmeier TJ, Nesvet JC, Woodruff TM, Pan CJ, Takase MK, Hazari N, Neidig ML |
| Jazyk: |
angličtina |
| Zdroj: |
Inorganic chemistry [Inorg Chem] 2014 Jun 16; Vol. 53 (12), pp. 6066-72. Date of Electronic Publication: 2014 May 30. |
| DOI: |
10.1021/ic5004275 |
| Abstrakt: |
Transition metal complexes supported by pincer ligands have many important applications. Here, the syntheses of five-coordinate PNP pincer-supported Fe complexes of the type (PNP)FeCl2 (PNP = HN{CH2CH2(PR2)}2, R = iPr ((iPr)PNP), tBu ((tBu)PNP), or cyclohexyl ((Cy)PNP)) are reported. In the solid state, ((iPr)PNP)FeCl2 was characterized in two different geometries by X-ray crystallography. In one form, the (iPr)PNP ligand binds to the Fe center in the typical meridional geometry for a pincer ligand, whereas in the other form, the (iPr)PNP ligand binds in a facial geometry. The electronic structures and geometries of all of the (PNP)FeCl2 complexes were further explored using (57)Fe Mössbauer and magnetic circular dichroism spectroscopy. These measurements show that in some cases two isomers of the (PNP)FeCl2 complexes are present in solution and conclusively demonstrate that binding of the PNP ligand is flexible, which may have implications for the reactivity of this important class of compounds. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
|
