Rodriguez-Lugo, Rafael E. and Chacon-Teran, Miguel A. and Wolf, Robert and Landaeta, Vanessa R. (2024) Ruthenium(II) complexes of a tripodal phosphite ligand: Synthesis characterization, and applications in catalytic dehydrogenation. INORGANICA CHIMICA ACTA, 573: 122314. ISSN 0020-1693, 1873-3255
Full text not available from this repository. (Request a copy)Abstract
The scaffold tris(8-quinolinyl)phosphite, (P(Oquin)(3)), can bind to metal centers as a bi- or a tridentate tripodal ligand, depending on the synthetic conditions and characteristics of the metal atom. Here the study of the coordinating properties of such chelate was extended to the synthesis and characterization of well-defined Ru(II)-halide complexes. The compound [kappa(3)(N,P,N){P(Oquin)(3)}RuCl2(PPh3)] was obtained by simple ligand exchange on the precursor [(PPh3)(3)RuCl2]. Two isomers were observed by means of P-31{H-1} NMR spectroscopy, and were partially separated by recrystallization in refluxing solvents, thus allowing their structure elucidation. X-ray diffraction analysis revealed that the two crystalline isomers have the formula [kappa(3)(N,P,N){P(Oquin)(3)} RuCl2(PPh3)] with the phosphite ligand coordinated to the Ru(II) center either in a meridional or in a facial disposition. The mixture [kappa(3)(N,P,N){P(Oquin)(3)}RuCl2(PPh3)] undergoes phosphine dissociation at temperatures over 100 degrees C, leading to the formation of [kappa(4)(P,N-3){P(Oquin)(3)}RuCl2]. This compound displays a tetradentate P (Oquin)(3) chelate and is a suitable catalyst for the dehydrogenation of formic acid and the dehydrocoupling of methylphenylsilane.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FORMIC-ACID; COORDINATION CHEMISTRY; TRANSFER HYDROGENATION; TRIPHOS; BEARING; Phosphite; Ruthenium; Tripodal ligands; Polydentate ligands; Dehydrogenative reactions |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Arbeitskreis Prof. Dr. Robert Wolf |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 04 Dec 2025 05:39 |
| Last Modified: | 04 Dec 2025 05:39 |
| URI: | https://pred.uni-regensburg.de/id/eprint/65049 |
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