III International Conference

PP-II-36weight linearly increased with conversion. At the same time polydispersity decreased withconversion.The “living” character of polymerization in the presence of ruthenacarboranes wasconfirmed with the recommencement of the process on adding a new portion of a monomer(post-polymerization) and the possibility of block-copolymer synthesis.ATRP of styrene with using the above systems proceeds with a lower rate than thesynthesis of polymethylmethacrylate under similar conditions. Besides, unlike thepolymerization of MMA, the smallest polydispersity ratios were obtained in the presence ofionic ruthenium complexes.It was shown that the examined diamagnetic carborane complexes of ruthenium comparefavorably by their catalytic activity with cyclopentadienyl derivatives of ruthenium that areable to efficiently initiate the synthesis of macromolecules only in the presence of aluminiumalkoxides but with a considerably smaller rate and conversion.It was established that the addition of amines to the catalytic system leads to a dramaticalincrease of the polymerization rate.The original scheme of polymer chain propagation in the presence of theruthenacarborans was proposed.The work was carried out with the financial support of the Russian Foundation BasicResearch (grant 05-03-32668).References1 Goto, T.Fukuda, Prog.Polym.Sci. 2004. V.29. N 2. P.329.2 E.V.Kolyakina, I.D.Grishin, D.N.Cheredilin et. all., Russ.Chem.Bull., 2006. V.55. N1. P.89.3 D.N.Cheredilin, F.M.Dolgyshin, I.D.Grishin et. all., Russ.Chem.Bull., 2006. V.55. N7. P..228