Stadler, Sonja M.; Goettker-Schnetmann, Inigo; Mecking, Stefan published the artcile< Incorporation of Radicals during Ni(II)-Catalyzed Ethylene Insertion Polymerization>, Category: chlorides-buliding-blocks, the main research area is nickel catalyzed ethylene insertion polymerization radical incorporation.
A possible involvement of radicals in catalytic insertion chain growth remains elusive, albeit it could account for thus far inconclusive exptl. observations and enable yet unachieved synthetic reaction schemes. This work shows that radicals present, deliberately generated for this purpose, are incorporated as end groups in ethylene insertion polymerizations Azo initiators (R-N = N-R’ with R = C(CH3)2COOMe, Ph, 3,5-F2C6H3) added to pressure reactor Ni(II)salicylaldiminato-catalyzed ethylene polymerizations afforded initiator-derived aryl or alkyl end groups, resp., as revealed by in-depth NMR studies of the polymer formed. The observation of addnl. solvent- derived aryl end groups, originating from radical transfer to toluene, underlines that end groups are indeed formed from radicals. Evidence for incorporation as a chain-initiating as well as -terminating end group is discussed.
ACS Catalysis published new progress about Crystal structure. 1435-43-4 belongs to class chlorides-buliding-blocks, and the molecular formula is C6H3ClF2, Category: chlorides-buliding-blocks.
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