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dc.contributor.authorGong, Dirong
dc.contributor.authorLiu, Wen
dc.contributor.authorPan, Weijing
dc.contributor.authorChen, Tao
dc.contributor.authorJia, Xiaoyu
dc.contributor.authorHuang, Kuo-Wei
dc.contributor.authorZhang, Xuequan
dc.date.accessioned2015-05-26T06:52:17Z
dc.date.available2015-05-26T06:52:17Z
dc.date.issued2015-05-21
dc.identifier.citationTunable regioselectivity in 1,3-butadiene polymerization by using 2,6-bis(dimethyl-2-oxazolin-2-yl)pyridine incorporated transition metal (Cr, Fe and Co) catalysts 2015 Journal of Molecular Catalysis A: Chemical
dc.identifier.issn13811169
dc.identifier.doi10.1016/j.molcata.2015.05.013
dc.identifier.urihttp://hdl.handle.net/10754/555759
dc.description.abstractTridentate complexes Cr(III)Cl3L, [L = 2,6-bis(dimethyl-2-oxazolin-2-yl) pyridine], Fe(III)Cl3L, Fe(II)Cl2L and Co(II)Cl2L have been prepared and fully characterized. The solid structures of Cr(III)Cl3L, Fe(III)Cl3L and Co(II)Cl2L have been revealed by single crystal X-ray diffraction, and the Cr(III)Cl3L and Fe(III)Cl3L complexes both exhibit a distorted octahedral geometry, while the Co(II)Cl2L complex has a trigonal bipyramidal conformation. Four complexes have been examined in regioselective polymerization of butadiene in combination with MAO in toluene at room temperature. The trans-1,4, cis-1,4 enchainment of resultant polybutadiene are controlled by the metal center. Activated by MAO, complex Cr(III)Cl3L produces high level of trans-1,4 selectivity (trans-1,4 up to 93.3%) with moderate polymer yield, complexes Fe(III)Cl3L and Fe(II)Cl2L both show equal cis-1,4 and trans-1,4 with minor 1,2 selectivity (<10%), and Co(II)Cl2L catalyst displays predominated cis-1,4 selectivity, which can be shifted to 1,2 selectivity by adding PPh3 as an additive. Thus, tuning of the cis-1,4, trans-1,4 and 1,2 selectivity in full range via central metal and additive chosen by these 2,6-bis(dimethyl-2-oxazolin-2-yl) pyridine supported catalysts has been achieved. © 2015 Elsevier B.V. All rights reserved.
dc.publisherElsevier BV
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S1381116915001867
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Molecular Catalysis A: Chemical. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Molecular Catalysis A: Chemical, 21 May 2015. DOI: 10.1016/j.molcata.2015.05.013
dc.subjectTransition metal catalysts
dc.subject1,3-butadiene
dc.subjectselectivity
dc.subject2,6-bis(dimethyl-2-oxazolin-2-yl)pyridine
dc.subjectcontrollable microstructure
dc.titleTunable regioselectivity in 1,3-butadiene polymerization by using 2,6-bis(dimethyl-2-oxazolin-2-yl)pyridine incorporated transition metal (Cr, Fe and Co) catalysts
dc.typeArticle
dc.contributor.departmentChemical Science Program
dc.contributor.departmentHomogeneous Catalysis Laboratory (HCL)
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalJournal of Molecular Catalysis A: Chemical
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Polymer Science and Engineering, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, PR China
dc.contributor.institutionMOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology, National Base for International Cooperation in Science & Technology of Textiles and Daily Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
dc.contributor.institutionKey Laboratory of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, PR China
dc.contributor.institutionKey Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, No.1799, Jimei Road, Xiamen, Fujian 361021, PR China
dc.contributor.institutionNingbo Urban Environment Observation and Research Station-NUEORS, Chinese Academy of Sciences, Ningbo,Zhejiang 315830,PR China
kaust.personGong, Dirong
kaust.personHuang, Kuo-Wei
kaust.personChen, Tao
dc.relation.issupplementedbyDOI:10.5517/cc12r9pt
dc.relation.issupplementedbyDOI:10.5517/cc12r9qv
dc.relation.issupplementedbyDOI:10.5517/cc12r9rw
refterms.dateFOA2017-05-21T00:00:00Z
display.relations<b> Is Supplemented By:</b> <br/> <ul><li><i>[Dataset]</i> <br/> Gong, D., Liu, W., Pan, W., Chen, T., Jia, X., Huang, K.-W., & Zhang, X. (2016). CCDC 1005506: Experimental Crystal Structure Determination [Data set]. Cambridge Crystallographic Data Centre. https://doi.org/10.5517/cc12r9pt. DOI: <a href="https://doi.org/10.5517/cc12r9pt">10.5517/cc12r9pt</a> HANDLE: <a href="http://hdl.handle.net/10754/624327">10754/624327</a></li><li><i>[Dataset]</i> <br/> Gong, D., Liu, W., Pan, W., Chen, T., Jia, X., Huang, K.-W., & Zhang, X. (2016). CCDC 1005507: Experimental Crystal Structure Determination [Data set]. Cambridge Crystallographic Data Centre. https://doi.org/10.5517/cc12r9qv. DOI: <a href="https://doi.org/10.5517/cc12r9qv">10.5517/cc12r9qv</a> HANDLE: <a href="http://hdl.handle.net/10754/624328">10754/624328</a></li><li><i>[Dataset]</i> <br/> Gong, D., Liu, W., Pan, W., Chen, T., Jia, X., Huang, K.-W., & Zhang, X. (2016). CCDC 1005508: Experimental Crystal Structure Determination [Data set]. Cambridge Crystallographic Data Centre. https://doi.org/10.5517/cc12r9rw. DOI: <a href="https://doi.org/10.5517/cc12r9rw">10.5517/cc12r9rw</a> HANDLE: <a href="http://hdl.handle.net/10754/624329">10754/624329</a></li></ul>
dc.date.published-online2015-05-21
dc.date.published-print2015-09


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