Vanadium(V) Complexes Bearing Bidentate Phenoxy‐Phosphine Ligands and Their High Performance Toward Ethylene Homopolymerization
Year: 2025
Type: article
Abstract: ABSTRACT A new series of imido‐vanadium(V) complexes bearing bidentate phenoxy‐phosphine ligands was synthesized in high yields and fully characterized by NMR spectroscopy, elemental analysis, and single‐crystal X‐ray diffraction. These complexes were systematically evaluated as efficient catalysts for ethylene polymerization. Among them, complex C1 exhibited exceptional activity, up to 446.5 × 10 6 g PE (mol V ) −1 ·h −1 , along with excellent thermal stability (120°C), long catalytic lifetime (120 min), and broad solvent compatibility. The produced polyethylene samples spanned moderate to ultra‐high molecular weights, with a maximum of 160.4 × 10 4 Da. Systematic structure‐activity‐polymer investigations revealed that both steric and electronic variations on ligand critically tune catalytic behavior and polymer properties, underscoring the effectiveness of phenoxy‐phosphine framework and providing valuable insights for the rational design of high‐performance polyolefin catalysts.
Source: Chemistry - A European Journal
Authors: Biao Li, Wenzheng Feng, Li Pan, Yuesheng Li
Institution: Tianjin University
Language: English
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: green
Award: G8585501577
OpenAlex ID: W4416913457