Synthesis, Characterization, and Comparative Study on Norbornene Polymerization of CNN and PCN Pincer Palladium Complexes DOI Creative Commons

Huizhu Wang,

Jin-Kui Liu,

Yidong Wang

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(7), P. 1530 - 1530

Published: March 30, 2025

Several CNN pincer Pd(II) complexes including chiral 1a–e with 2-phenyl-6-(oxazolinyl)pyridines and achiral ones 2a–c N-substituted-2-aminomethyl-6-phenylpyridines were prepared. In addition, the preparation of PCN 3a–e aryl-based phosphinite–imine ligands 4a–c phosphinite–imidazoline was also performed. Among them, pincers new readily synthesized from commercially available materials in only two steps. The characterized through elemental analyses, namely 1H NMR, 13C{1H} 31P{1H} NMR spectroscopies. Furthermore, molecular structure complex 3a determined via X-ray single-crystal diffraction analysis. presence EtAlCl2, Et2AlCl, or methylaluminoxane (MAO), exhibited excellent activities monomer conversion rates norbornene addition polymerization. Surprisingly, a higher rate (99.5%) Et2AlCl as cocatalyst, while showed (98.8%) MAO.

Language: Английский

Synthesis, Characterization, and Comparative Study on Norbornene Polymerization of CNN and PCN Pincer Palladium Complexes DOI Creative Commons

Huizhu Wang,

Jin-Kui Liu,

Yidong Wang

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(7), P. 1530 - 1530

Published: March 30, 2025

Several CNN pincer Pd(II) complexes including chiral 1a–e with 2-phenyl-6-(oxazolinyl)pyridines and achiral ones 2a–c N-substituted-2-aminomethyl-6-phenylpyridines were prepared. In addition, the preparation of PCN 3a–e aryl-based phosphinite–imine ligands 4a–c phosphinite–imidazoline was also performed. Among them, pincers new readily synthesized from commercially available materials in only two steps. The characterized through elemental analyses, namely 1H NMR, 13C{1H} 31P{1H} NMR spectroscopies. Furthermore, molecular structure complex 3a determined via X-ray single-crystal diffraction analysis. presence EtAlCl2, Et2AlCl, or methylaluminoxane (MAO), exhibited excellent activities monomer conversion rates norbornene addition polymerization. Surprisingly, a higher rate (99.5%) Et2AlCl as cocatalyst, while showed (98.8%) MAO.

Language: Английский

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