New η3-Allylpalladium Complexes with Pyridylpyrazole Ligands : Synthesis, Characterization and Study of the Influence of N1 Substituents on the Apparent Allyl Rotation
Montoya García, Vanessa (Universitat Autònoma de Barcelona. Departament de Química)
Pons Picart, Josefina ![Identificador ORCID](/img/uab/orcid.ico)
(Universitat Autònoma de Barcelona. Departament de Química)
García-Antón, Jordi ![Identificador ORCID](/img/uab/orcid.ico)
(Universitat Autònoma de Barcelona. Departament de Química)
Solans Monfort, Xavier ![Identificador ORCID](/img/uab/orcid.ico)
(Universitat Autònoma de Barcelona. Departament de Química)
Font-Bardia, Mercè ![Identificador ORCID](/img/uab/orcid.ico)
(Universitat de Barcelona. Unitat de Difracció de Raig-X)
Ros i Badosa, Josep ![Identificador ORCID](/img/uab/orcid.ico)
(Universitat Autònoma de Barcelona. Departament de Química)
Fecha: |
2007 |
Resumen: |
The allylpalladium [Pd(η3-C3H5)(L)](BF4) (L = L1 (1), L2 (2), L3 (3), L4 (4)) complexes with pyridylpyrazole ligands 2-(5-phenyl-1H-pyrazol-3-yl)pyridine (L1), 2-(1-ethyl-5-phenyl-1H-pyrazol-3-yl)pyridine (L2), 2-(1-octyl-5-phenyl)-1H-pyrazol-3-yl)pyridine (L3), and 2-(5-phenyl-3-(pyridin-2-yl)pyrazol-1-yl)ethanol (L4) were synthesized from the appropriate pyridylpyrazole ligand and [Pd(η3-C3H5)Cl]2 in the presence of AgBF4. The cationic complex 1 was converted into the neutral complex 5 under basic conditions. These complexes were characterized, and the crystal and molecular structure of [Pd(η3-C3H5)(L2)](BF4) (2) was resolved by X-ray diffraction. Also, we have studied the apparent allyl rotation, observed as Hsyn−Hsyn and Hanti−Hanti interconversions. The influences of the solvent, the traces of water, and the N1 substituent have also been studied. |
Ayudas: |
Ministerio de Educación y Cultura BQU2003-03582
|
Derechos: |
Tots els drets reservats. ![](/img/licenses/InC.ico) |
Lengua: |
Anglès |
Documento: |
Article ; recerca ; Versió sotmesa a revisió |
Materia: |
Allyl group ;
Ligands ;
Nitrogen ;
Nuclear magnetic resonance spectroscopy ;
Solvents |
Publicado en: |
Organometallics, Vol. 26, Issue 13 (June 2007) , p. 3183-3190, ISSN 1520-6041 |
DOI: 10.1021/om070093u
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