FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2085359022> ?p ?o ?g. }

• W2085359022 endingPage "1510" @default.
• W2085359022 startingPage "1502" @default.
• W2085359022 abstract "The compounds Cp*TiMe2C6F5, Cp*TiMe2OC6F5, and Cp*TiMe2Cl (Cp* = η5-C5Me5) react with the borane B(C6F5)3 to form the thermally unstable, chiral complexes Cp*TiMe(C6F5)(μ-Me)B(C6F5)3, Cp*TiMe(OC6F5)(μ-Me)B(C6F5)3, and Cp*TiMeCl(μ-Me)B(C6F5)3, respectively, which are similar to the known Cp*TiMe2(μ-Me)B(C6F5)3. All four μ-Me compounds behave as sources of the highly electrophilic species [Cp*TiMeE]+ (E = Me, Cl, C6F5, OC6F5) when treated with the borane, the last three being chiral, and all four systems exhibit catalytic activities for the polymerization of ethylene to high-molecular-weight polyethylene. Despite the chirality at titanium of three of the compounds, polymerization of propylene by all of them results in the formation of atactic, elastomeric polypropylene. NMR analyses of the propylene polymers formed show that initiation involves 1,2-insertion into a Ti−Me bond, and while propagation involves primarily head-to-tail 1,2-insertions, an unusually high (by metallocene standards) proportion of the insertions also involves 2,1-misinsertions but essentially no 1,3-enchainment. The major olefinic end groups are vinylidene (CH2CMe−), resulting from β-hydrogen transfer following a 1,2-insertion, and vinyl (CH2CH−), resulting from β-hydrogen transfer from the methyl group following a 2,1-insertion or, more likely, β-methyl transfer following a 1,2-insertion. Small amounts of internal olefins are also formed via β-hydrogen transfer following a 2,1-insertion. An EPR study of the Cp*TiMe3/B(C6F5)3 system in toluene indicates that <0.01% of the titanium is occasionally present during polymerization as a complex of titanium(III), suggesting that a contribution to catalysis by titanium(III) species is unlikely." @default.
• W2085359022 created "2016-06-24" @default.
• W2085359022 creator A5006393321 @default.
• W2085359022 creator A5020080609 @default.
• W2085359022 creator A5026654368 @default.
• W2085359022 creator A5051345289 @default.
• W2085359022 creator A5055333503 @default.
• W2085359022 creator A5069691712 @default.
• W2085359022 date "1998-03-15" @default.
• W2085359022 modified "2023-09-27" @default.
• W2085359022 title "Ethylene and Propylene Polymerization by a Series of Highly Electrophilic, Chiral Monocyclopentadienyltitanium Catalysts" @default.
• W2085359022 cites W1501319738 @default.
• W2085359022 cites W1569327564 @default.
• W2085359022 cites W1585191043 @default.
• W2085359022 cites W1926072778 @default.
• W2085359022 cites W1963540793 @default.
• W2085359022 cites W1968526380 @default.
• W2085359022 cites W1969224744 @default.
• W2085359022 cites W1975190481 @default.
• W2085359022 cites W2011726508 @default.
• W2085359022 cites W2012455168 @default.
• W2085359022 cites W2016009189 @default.
• W2085359022 cites W2021609950 @default.
• W2085359022 cites W2034749916 @default.
• W2085359022 cites W2041647217 @default.
• W2085359022 cites W2054426145 @default.
• W2085359022 cites W2059140740 @default.
• W2085359022 cites W2080427213 @default.
• W2085359022 cites W2083751687 @default.
• W2085359022 cites W2122731156 @default.
• W2085359022 cites W2153900045 @default.
• W2085359022 cites W2154979223 @default.
• W2085359022 cites W2158794084 @default.
• W2085359022 cites W2166510850 @default.
• W2085359022 doi "https://doi.org/10.1021/om970522w" @default.
• W2085359022 hasPublicationYear "1998" @default.
• W2085359022 type Work @default.
• W2085359022 sameAs 2085359022 @default.
• W2085359022 citedByCount "79" @default.
• W2085359022 countsByYear W20853590222012 @default.
• W2085359022 countsByYear W20853590222013 @default.
• W2085359022 countsByYear W20853590222014 @default.
• W2085359022 countsByYear W20853590222017 @default.
• W2085359022 crossrefType "journal-article" @default.
• W2085359022 hasAuthorship W2085359022A5006393321 @default.
• W2085359022 hasAuthorship W2085359022A5020080609 @default.
• W2085359022 hasAuthorship W2085359022A5026654368 @default.
• W2085359022 hasAuthorship W2085359022A5051345289 @default.
• W2085359022 hasAuthorship W2085359022A5055333503 @default.
• W2085359022 hasAuthorship W2085359022A5069691712 @default.
• W2085359022 hasConcept C121332964 @default.
• W2085359022 hasConcept C124668440 @default.
• W2085359022 hasConcept C155647269 @default.
• W2085359022 hasConcept C161790260 @default.
• W2085359022 hasConcept C178790620 @default.
• W2085359022 hasConcept C185592680 @default.
• W2085359022 hasConcept C188027245 @default.
• W2085359022 hasConcept C20621625 @default.
• W2085359022 hasConcept C2778597550 @default.
• W2085359022 hasConcept C2778826510 @default.
• W2085359022 hasConcept C2779751980 @default.
• W2085359022 hasConcept C2780446808 @default.
• W2085359022 hasConcept C44228677 @default.
• W2085359022 hasConcept C50027330 @default.
• W2085359022 hasConcept C521977710 @default.
• W2085359022 hasConcept C52703039 @default.
• W2085359022 hasConcept C62520636 @default.
• W2085359022 hasConcept C7602139 @default.
• W2085359022 hasConceptScore W2085359022C121332964 @default.
• W2085359022 hasConceptScore W2085359022C124668440 @default.
• W2085359022 hasConceptScore W2085359022C155647269 @default.
• W2085359022 hasConceptScore W2085359022C161790260 @default.
• W2085359022 hasConceptScore W2085359022C178790620 @default.
• W2085359022 hasConceptScore W2085359022C185592680 @default.
• W2085359022 hasConceptScore W2085359022C188027245 @default.
• W2085359022 hasConceptScore W2085359022C20621625 @default.
• W2085359022 hasConceptScore W2085359022C2778597550 @default.
• W2085359022 hasConceptScore W2085359022C2778826510 @default.
• W2085359022 hasConceptScore W2085359022C2779751980 @default.
• W2085359022 hasConceptScore W2085359022C2780446808 @default.
• W2085359022 hasConceptScore W2085359022C44228677 @default.
• W2085359022 hasConceptScore W2085359022C50027330 @default.
• W2085359022 hasConceptScore W2085359022C521977710 @default.
• W2085359022 hasConceptScore W2085359022C52703039 @default.
• W2085359022 hasConceptScore W2085359022C62520636 @default.
• W2085359022 hasConceptScore W2085359022C7602139 @default.
• W2085359022 hasIssue "8" @default.
• W2085359022 hasLocation W20853590221 @default.
• W2085359022 hasOpenAccess W2085359022 @default.
• W2085359022 hasPrimaryLocation W20853590221 @default.
• W2085359022 hasRelatedWork W2028097186 @default.
• W2085359022 hasRelatedWork W2045309562 @default.
• W2085359022 hasRelatedWork W2060286207 @default.
• W2085359022 hasRelatedWork W2103713731 @default.
• W2085359022 hasRelatedWork W2345813153 @default.
• W2085359022 hasRelatedWork W2359085642 @default.
• W2085359022 hasRelatedWork W2756354292 @default.
• W2085359022 hasRelatedWork W2801753657 @default.

• next