Advances in PNP-ligated rare-earth-metal complexes: Reactivity and catalytic performances

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Hu Hongfan; Ma Rongqing; Cui Chenxi; Mao Guoliang; Xin Shixuan

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Journal Paper

Paper Information

Journal: POLYOLEFINS JOURNALS Year:621 | Volume: | Issue: Page(s): 89-99

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Title

Advances in PNP-ligated rare-earth-metal complexes: Reactivity and catalytic performances

Author(s)

Keywords

PNP ligandQ4

rare earth metalsQ4

LanthanidesQ4

ReactivityQ4

catalysisQ4

Abstract

Due to the large ionic radius and high electro-positivity nature, rare earth metal complexes are difficult to stabilize and undergo pathways like ligand redistribution and intramolecular C-H activation. To solve such problems and retain reactive versatility, rare earth complexes supported by a variety of tridentate PNP pincer ligands have been explored. Such complexes can serve as perfect precursors for preparing ultra-active rare earth species containing two metal-carbon bands, let alone Ln=N and Ln=P multiple bonds. In addition, the combined stability and activity of the cation rare earth mediates made them the best catalysts for the polymerization of olefins and other non-polar hydrocarbon monomers, especially conjugated dienes. The practical utilization of rare earth metal catalysts for new materials production have also extensively explored by experts from the academic and industries.

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