Academic Journal
Diverse C -Coordination Modes of NHC-Tricyclohexylphosphonium Ylide Ligands in Palladium(II) Complexes
| العنوان: | Diverse C -Coordination Modes of NHC-Tricyclohexylphosphonium Ylide Ligands in Palladium(II) Complexes |
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| المؤلفون: | El Kadiri, Mustapha, Chihab, Abdelali, Taakili, Rachid, Duhayon, Carine, Valyaev, Dmitry, A., Canac, Yves |
| المساهمون: | Laboratoire de chimie de coordination (LCC), Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | ISSN: 0276-7333. |
| بيانات النشر: | HAL CCSD American Chemical Society |
| سنة النشر: | 2022 |
| المجموعة: | Université Toulouse III - Paul Sabatier: HAL-UPS |
| مصطلحات موضوعية: | Salts, Anions, Pincer complexes, Ligands, Cations, [CHIM.COOR]Chemical Sciences/Coordination chemistry |
| الوصف: | International audience ; Thanks to the +PCy3 substituents which are unlikely to undergo intramolecular C–H activation, the Pd(II) complex [(C,C,C)PdCl](OTf) having a neutral LX2-type NHC, diphosphonium bis(ylide) pincer ligand was selectively prepared by a double deprotonation of the [(NHC)PdCl2(Py)] precursor with tBuOK. The influence of the +PCy3 substituents on the overall electronic properties of this pincer scaffold was evaluated by IR spectroscopy data of the corresponding Pd–CO adduct, revealing its stronger electron-donating character in comparison to the structurally related NHC core pincer bearing +PPh3 extremities. Treatment of the electron-rich pincer complex [(C,C,C)PdCl](OTf) with AgOTf led to the C,C-chelating NHC-phosphonium ylide Pd(II) complex [(C,C)Pd(OTf)Cl](OTf) via the oxidatively induced homolytic cleavage of a Pd–ylide bond. In the presence of a stronger base (KHMDS or LDA) cyclometalation of a +P–Cy substituent was observed, affording a constrained Pd(II) complex featuring the unique anionic LX3-type C,C,C,C-NHC, diphosphonium tris(ylide) ligand. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | hal-03579686; https://hal.science/hal-03579686; https://hal.science/hal-03579686/document; https://hal.science/hal-03579686/file/El%20Kadiri,%20Diverse%20C-Coordination%20modes%20of%20NHC,%202022.pdf |
| DOI: | 10.1021/acs.organomet.1c00700 |
| الاتاحة: | https://hal.science/hal-03579686 https://hal.science/hal-03579686/document https://hal.science/hal-03579686/file/El%20Kadiri,%20Diverse%20C-Coordination%20modes%20of%20NHC,%202022.pdf https://doi.org/10.1021/acs.organomet.1c00700 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.2FBDB60F |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acs.organomet.1c00700 |
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