Homogeneous organolanthanide catalysts for the selective polymerization of styrene without aluminium cocatalysts

Baudry-Barbier, Denise; Camus, Elise; Dormond, A.; Visseaux, Marc

doi:10.1002/(sici)1099-0739(199911)13:11<813::aid-aoc897>3.0.co;2-#

Cited by 23 publications

(1 citation statement)

References 25 publications

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“…[5] The product obtained from each procedure was analyzed by 13 C NMR, in order to see whether the ligand asymmetry had any effect on the polymer tacticity. [48,49] However, no notable difference could be detected, relative to a polymer obtained by free radical polymerization (AIBN initiator). l'environnement" (1997-98).…”

Section: (B) Controlled Radical Polymerizationsmentioning

confidence: 97%

Half-sandwich Mo(III) complexes with asymmetric diazadiene ligands

Stoffelbach

Richard

Poli

et al. 2006

Inorganica Chimica Acta

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The asymmetric 1,4-diazadiene ligands R*N=CHCH=NR* [R* = (S)-CH(CH3)Ph], R*2dad, and 2,2'-bis(4-ethyloxazoline), as-ox, have been used to generate half-sandwich Mo III derivatives by addition to Cp2Mo2Cl4. Ligand R*2dad affords a mononuclear, paramagnetic 17-electron product, CpMoCl2(R*2dad), whereas as-ox leads to the isolation of a dinuclear compound where only one molecule of ligand has been added per two Mo atoms, Cp2Mo2Cl4(as-ox). In the presence of free as-ox, this compound coexists with the paramagnetic mononuclear complex in solution. Both products are capable to control the radical polymerization of styrene under typical atom transfer radical polymerization (ATRP) conditions. However, the tacticity of the resulting polystyrene does not differ from that given by conventional free radical polymerization.

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