2023
DOI: 10.1021/acs.organomet.2c00505
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Rigid Triptycene-Based Di- and Trinuclear Salicylaldiminato Nickel Cooperative Polymerization Catalysts

Abstract: A multimetallic structure with a rigid linker can poise more than one catalytically active site in close proximity to control their reaction pathways in ethylene (co)­polymerization by intermetallic cooperativity. This elegant concept was mainly limited to bimetallic systems. We report the synthesis of a series of mono-, bi-, and trinuclear salicylaldiminato Ni­(II) catalysts based on a triptycene backbone. In ethylene (co)­polymerization, the bimetallic nickel catalyst not only showed higher activity than the… Show more

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Cited by 4 publications
(3 citation statements)
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“…Evaporation of volatiles afforded 4-((1,1,2,2-tetrafluoroethoxy)methyl)oxetan-2-one, rac-BPL CH 2 OCF 2 CHF 2 , as a yellowish oil (2.60 g; 75%). 1 H NMR (400 MHz, (CD 3 ) 2 CO, 25 °C) δ ( ppm): 6.27 (tt, 3…”
Section: Polymer Chemistrymentioning
confidence: 99%
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“…Evaporation of volatiles afforded 4-((1,1,2,2-tetrafluoroethoxy)methyl)oxetan-2-one, rac-BPL CH 2 OCF 2 CHF 2 , as a yellowish oil (2.60 g; 75%). 1 H NMR (400 MHz, (CD 3 ) 2 CO, 25 °C) δ ( ppm): 6.27 (tt, 3…”
Section: Polymer Chemistrymentioning
confidence: 99%
“…Such polymers exhibiting adjacent stereocenters having the same (isotactic structure), or opposite/alternating (syndiotactic/heterotactic structure) configuration, are indeed valuable for their tunable thermal, mechanical and degradation properties, in comparison with those exhibiting randomly distributed stereocenters (atactic structure). [1][2][3][4] Such polyesters typically include polylactide (PLA) and polyhydroxyalkanoates (PHAs), which are commonly prepared by ROP of lactide (LA) and β-lactones, respectively. One advantage (among others), over PLA, of the most common synthetic PHAs, which are derived from 4-substituted β-propiolactones (namely BPL FG s, FG = non-functional or functional group), arises from the FG exocyclic side chain.…”
Section: Introductionmentioning
confidence: 99%
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