PMID- 27254815 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20180117 LR - 20180117 IS - 1477-9234 (Electronic) IS - 1477-9226 (Linking) VI - 45 IP - 25 DP - 2016 Jun 21 TI - Hydrosilane-B(C6F5)3 adducts as activators in zirconocene catalyzed ethylene polymerization. PG - 10146-50 LID - 10.1039/c6dt01946c [doi] AB - Hydrosilane-B(C6F5)3 adducts were found to activate zirconocene dihalides and generate ternary catalytic systems possessing moderate to high activity in ethylene polymerization to high density polyethylene (HDPE). The activation efficacy of the adducts increased with increasing hydride donor ability and decreased with steric crowding of the particular hydrosilane used. NMR investigation of the HSiEt3/B(C6F5)3/Cp*2ZrF2 system (Cp* = eta(5)-C5Me5) revealed the formation of a stable intermediate [Cp*2ZrF(FSiEt3-kappaF)](+)[HB(C6F5)3](-), whereas a crucial role of the [HB(C6F5)3](-) anion as a hydride donor for generation of an active cationic zirconium hydride center was elucidated. FAU - Varga, Vojtech AU - Varga V AD - J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejskova 3, 182 23 Prague 8, Czech Republic. jiri.pinkas@jh-inst.cas.cz. FAU - Lamac, Martin AU - Lamac M AD - J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejskova 3, 182 23 Prague 8, Czech Republic. jiri.pinkas@jh-inst.cas.cz. FAU - Horacek, Michal AU - Horacek M AD - J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejskova 3, 182 23 Prague 8, Czech Republic. jiri.pinkas@jh-inst.cas.cz. FAU - Gyepes, Robert AU - Gyepes R AD - J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejskova 3, 182 23 Prague 8, Czech Republic. jiri.pinkas@jh-inst.cas.cz. FAU - Pinkas, Jiri AU - Pinkas J AD - J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejskova 3, 182 23 Prague 8, Czech Republic. jiri.pinkas@jh-inst.cas.cz. LA - eng PT - Journal Article PL - England TA - Dalton Trans JT - Dalton transactions (Cambridge, England : 2003) JID - 101176026 EDAT- 2016/06/03 06:00 MHDA- 2016/06/03 06:01 CRDT- 2016/06/03 06:00 PHST- 2016/06/03 06:00 [entrez] PHST- 2016/06/03 06:00 [pubmed] PHST- 2016/06/03 06:01 [medline] AID - 10.1039/c6dt01946c [doi] PST - ppublish SO - Dalton Trans. 2016 Jun 21;45(25):10146-50. doi: 10.1039/c6dt01946c.