Search results for "Halogen atom transfer"

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An Experimental and Computational Study on the Effect of Al(OiPr)3 on Atom-Transfer Radical Polymerization and on the Catalyst-Dormant Chain Halogen …

2005

International audience; Compound Al(OiPr)3 is shown to catalyze the halide-exchange process leading from [Mo(Cp)Cl2(iPrN=CH-CH=NiPr)] and CH3CH(X)COOEt (X=Br, I) to the mixed-halide complexes [Mo(Cp)ClX(iPrN=CH-CH=NiPr)]. On the other hand, no significant acceleration is observed for the related exchange between [MoX3(PMe3)3] (X=Cl, I) and PhCH(Br)CH3, by analogy to a previous report dealing with the RuII complex [RuCl2(PPh3)3]. A DFT computation study, carried out on the model complexes [Mo(Cp)Cl2(PH3)2], [MoCl3(PH3)3], and [RuCl2(PH3)3], and on the model initiators CH3CH(Cl)COOCH3, CH3Cl, and CH3Br, reveals that the 16-electron RuII complex is able to coordinate the organic halide RX in a…

Radical polymerizationHalide010402 general chemistryPhotochemistry01 natural sciencesCatalysisAdductLewis acid catalysisNucleophilic substitution[CHIM.COOR]Chemical Sciences/Coordination chemistryLewis acids and bases010405 organic chemistryAtom-transfer radical-polymerizationChemistryOrganic ChemistryGeneral ChemistryHalide exchange[CHIM.CATA]Chemical Sciences/Catalysis0104 chemical sciencesLewis acid catalysis[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistryCrystallography[CHIM.POLY]Chemical Sciences/PolymersDensity functional theoryDensity functional theoryHalogen atom transfer
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