caa a22 4500 445870540 CHVBK 20180317145510.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10563-011-9116-x doi (NATIONALLICENCE)springer-10.1007/s10563-011-9116-x (Imido)vanadium Complexes as Efficient Catalyst Precursors for Olefin Polymerization/Oligomerization [Elektronische Daten] [Shu Zhang, Kotohiro Nomura] (Arylimido)vanadium(V) complexes containing anionic ancillary donor ligands of type, V(NAr)Cl2(L) (Ar=2,6-Me2C6H3, L=aryloxo, ketimide phenoxyimine, etc.) exhibited high catalytic activities for ethylene polymerization in the presence of Al cocatalyst; V(NAr)Cl2(O-2,6-Me2C6H3) showed the exceptionally high activities in the presence of halogenated Al alkyls such as Et2AlCl, EtAlCl2, etc. (Arylimido)vanadium(V)-alkylidene complexes, V(CHSiMe3)(NAr)(L′) (L′=N=CtBu2, O-2,6-iPr2C6H3) exhibited the remarkable catalytic activities for ring-opening metathesis polymerization of norbornene. (Imido)vanadium(V) complexes containing the (2-anilidomethyl)pyridine ligand, V(NR)Cl2[2-Ar′NCH2(C5H4N)] (R=1-adamantyl, cyclohexyl, phenyl, Ar′=2,6-Me2C6H3, 2,6-iPr2C6H3), exhibit the remarkable activities for ethylene dimerization in the presence of MAO, affording 1-butene exclusively (selectivity 90.4 to >99%). The steric bulk of the imido ligand plays an important role in the selectivity, and the electronic nature directly affects the activity. Springer Science+Business Media, LLC, 2011 Olefin polymerization nationallicence Homogeneous catalysis nationallicence Vanadium nationallicence Ethylene nationallicence Al cocatalyst nationallicence Norbornene nationallicence Zhang Shu Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, 192-0397, Hachioji, Tokyo, Japan aut Nomura Kotohiro Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, 192-0397, Hachioji, Tokyo, Japan aut Catalysis Surveys from Asia Springer US; http://www.springer-ny.com 15/2(2011-06-01), 127-133 1571-1013 15:2<127 2011 15 10563 https://doi.org/10.1007/s10563-011-9116-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10563-011-9116-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Shu Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, 192-0397, Hachioji, Tokyo, Japan aut NATIONALLICENCE 700 1- Nomura Kotohiro Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, 192-0397, Hachioji, Tokyo, Japan aut NATIONALLICENCE 773 0- Catalysis Surveys from Asia Springer US; http://www.springer-ny.com 15/2(2011-06-01), 127-133 1571-1013 15:2<127 2011 15 10563 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer