Heterobimetallic aluminate derivatives with bulky phenoxide ligands: a catalyst for selective vinyl polymerization

Heterobimetallic aluminate derivatives with bulky phenoxide ligands: a catalyst for selective vinyl polymerization

New aluminium-alkali metal heterometallic compounds using the bulky ligand OAr = 2,6-bis(diphenylmethyl)-4- tert -butylphenoxide have been synthesized and characterized. The species obtained, [MAlMe 3 (OAr)] (M = Li( 2a ), Na( 2b ), K( 2c )) and [MAlMe 2 (OAr) 2 ] (M = Li( 3a ), Na( 3b ), K( 3c )),...

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Veröffentlicht in:Dalton transactions : an international journal of inorganic chemistry 2019-05, Vol.48 (19), p.6435-6444
Hauptverfasser: Palenzuela, Miguel, Muñoz, Mª Teresa, Vega, Juan F, Gutiérrez-Rodríguez, Ángel, Cuenca, Tomás, Mosquera, Marta E. G
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container_issue 19
container_start_page 6435
container_title Dalton transactions : an international journal of inorganic chemistry
container_volume 48
creator Palenzuela, Miguel
Muñoz, Mª Teresa
Vega, Juan F
Gutiérrez-Rodríguez, Ángel
Cuenca, Tomás
Mosquera, Marta E. G
description New aluminium-alkali metal heterometallic compounds using the bulky ligand OAr = 2,6-bis(diphenylmethyl)-4- tert -butylphenoxide have been synthesized and characterized. The species obtained, [MAlMe 3 (OAr)] (M = Li( 2a ), Na( 2b ), K( 2c )) and [MAlMe 2 (OAr) 2 ] (M = Li( 3a ), Na( 3b ), K( 3c )), include some of the few heterobimetallic examples of aluminate complexes with O-donor ligands described so far. Their activity in polymerization towards a difunctional monomer, such as Glycidyl Methacrylate (GMA), was evaluated. The compounds were revealed to be able to polymerize the acrylate groups via vinyl polymerization. Interestingly, the homometallic counterparts [AlXMe(OAr)] (X = Cl, Me), previously described by us, are very active in ROP processes of GMA. The combined polymerization process using both catalysts has also been explored to obtain a polymeric material with an exciting macromolecular architecture. New aluminates as active catalysts for vinyl polymerization are described, as well as a strategy to crosslinked polymers from GMA in a controlled fashion.
doi_str_mv 10.1039/c9dt00761j
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title Heterobimetallic aluminate derivatives with bulky phenoxide ligands: a catalyst for selective vinyl polymerization
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