Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/43283
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dc.contributor.authorChen, Q-
dc.contributor.authorZhang, W-
dc.contributor.authorSolan, GA-
dc.contributor.authorZhang, R-
dc.contributor.authorGuo, L-
dc.contributor.authorHao, X-
dc.contributor.authorSun, W-H-
dc.date.accessioned2019-02-08T13:13:52Z-
dc.date.issued2018-11-01-
dc.identifier.citationORGANOMETALLICS, 2018, 37 (21), pp. 4002-4014 (13)en
dc.identifier.issn0276-7333-
dc.identifier.urihttps://pubs.acs.org/doi/10.1021/acs.organomet.8b00602en
dc.identifier.urihttp://hdl.handle.net/2381/43283-
dc.descriptionThe file associated with this record is under embargo until 12 months after publication, in accordance with the publisher's self-archiving policy. The full text may be available through the publisher links provided above.en
dc.description.abstractA family of six CH(phenol)-bridged bimetallic bis(imino)pyridine-iron(II) chlorides, CH(C6H4-4-OH){2′-(4-C6H2-2,6-(R1)2N═CMe)-6′-(2″,6″-(R2)2-4-(R3)C6H2N═CMe)C5H3N}2Fe2Cl4 [R1 = R2 = Me, R3 = H, Fe1; R1 = R2 = Et, R3 = H, Fe2; R1 = Me, R2 = Et, R3 = H, Fe3; R1 = Me, R2 = i-Pr, R3 = H, Fe4; R1 = R2 = R3 = Me, Fe5; R1 = R2 = Et, R3 = Me, Fe6], has been synthesized by the reaction of the corresponding compartmental ligand with 2 equiv of FeCl2·4H2O. The molecular structure of Fe6 reveals an intramolecular Fe···Fe separation of 10.152 Å, with pairs of Fe6 assembling through intermolecular OH···Cl hydrogen bonding interactions. On activation with MAO or MMAO, Fe1–Fe6 exhibited both good thermal stability and very high activity for ethylene polymerization with the least sterically bulky compound, Fe1, being the standout performer (up to 2.43 × 107 g·mol–1(Fe)·h–1 at 60 °C). Notably, Fe1/MAO showed almost double the activity of a structurally related mononuclear catalyst while the resultant polyethylene exhibited much higher molecular weight. In general, the polymeric materials are highly linear and have a tendency to display bimodal distributions that is influenced by the amount of cocatalyst employed. End-group analysis of the polymers generated using MMAO activation reveals chain ends composed of vinyl and saturated groups (propyl and isobutyl), while with MAO, a preference for propyl end groups is observed.en
dc.description.sponsorshipThis work was supported by the National Natural Science Foundation of China (Nos. 51473170, and 21871275).en
dc.language.isoenen
dc.publisherAmerican Chemical Societyen
dc.relation.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000450374500040&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8c4e325952a993be76947405d4bce7d5-
dc.rightsCopyright © 2018, American Chemical Society. Deposited with reference to the publisher’s open access archiving policy. (http://www.rioxx.net/licenses/all-rights-reserved)en
dc.subjectScience & Technologyen
dc.subjectPhysical Sciencesen
dc.subjectChemistry, Inorganic & Nuclearen
dc.subjectChemistry, Organicen
dc.subjectChemistryen
dc.subjectOLEFIN POLYMERIZATIONen
dc.subjectVINYL-POLYETHYLENESen
dc.subjectCATALYTIC BEHAVIORen
dc.subjectCOBALT CATALYSTSen
dc.subjectBIMETALLIC IRONen
dc.subjectPRE-CATALYSTSen
dc.subjectCOMPLEXESen
dc.subjectOLIGOMERIZATIONen
dc.subjectLIGANDSen
dc.subjectCONJUNCTIONen
dc.titleCH(phenol)-Bridged Bis(imino)pyridines as Compartmental Supports for Diiron Precatalysts for Ethylene Polymerization: Exploring Cooperative Effects on Performanceen
dc.typeJournal Articleen
dc.identifier.doi10.1021/acs.organomet.8b00602-
dc.identifier.eissn1520-6041-
dc.description.statusPeer-revieweden
dc.description.versionPost-printen
dc.type.subtypeArticle;Journal-
pubs.organisational-group/Organisationen
pubs.organisational-group/Organisation/COLLEGE OF SCIENCE AND ENGINEERINGen
pubs.organisational-group/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Chemistryen
dc.rights.embargodate2019-11-01-
Appears in Collections:Published Articles, Dept. of Chemistry

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