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Norbornene polymerization and copolymerization with ethylene by titanium complexes bearing pyridinium imide ligand. TRANSIT METAL CHEM 2022. [DOI: 10.1007/s11243-022-00517-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Yu KH, Huang SL, Liu YH, Wang Y, Liu ST, Cheng YC, Lin YF, Chen JT. Kinetics, Mechanism and Theoretical Studies of Norbornene-Ethylene Alternating Copolymerization Catalyzed by Organopalladium(II) Complexes Bearing Hemilabile α-Amino-pyridine. Molecules 2017; 22:E1095. [PMID: 28665348 PMCID: PMC6152412 DOI: 10.3390/molecules22071095] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 06/27/2017] [Indexed: 11/24/2022] Open
Abstract
Cationic methylpalladium complexes bearing hemilabile bidentate α-amino-pyridines can serve as effective precursors for catalytic alternating copolymerization of norbornene (N) and ethylene (E), under mild conditions. The norbornyl palladium complexes in the formula of {[RHNCH₂(o-C₆H₄N)]Pd(C₇H10Me)(NCMe)}(BF₄) (R = iPr (2a), tBu (2b), Ph (2c), 2,6-Me₂C₆H₃ (2d), 2,6-iPr₂C₆H₃ (2e)) were synthesized via single insertion of norbornene into the corresponding methylpalladium complexes 1a-1e, respectively. Both square planar methyl and norbornyl palladium complexes exhibit facile equilibria of geometrical isomerization, via sterically-controlled amino decoordination-recoordination of amino-pyridine. Kinetic studies of E-insertion, N-insertion of complexes 1 and 2, and the geometric isomerization reactions have been examined by means of VT-NMR, and found in excellent agreement with the results estimated by DFT calculations. The more facile N-insertion in the cis-isomers, and ready geometric isomerization, cooperatively lead to a new mechanism that accounts for the novel catalytic formation of alternating COC.
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Affiliation(s)
- Kuo-Hsuan Yu
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan.
| | - Shou-Ling Huang
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan.
| | - Yi-Hung Liu
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan.
| | - Yu Wang
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan.
| | - Shiuh-Tzung Liu
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan.
| | - Yuan-Chung Cheng
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan.
| | - Ya-Fan Lin
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan.
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Jwu-Ting Chen
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan.
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Tritto I, Boggioni L, Scalcione G, Sidari D, Galotto NG. Novel norbornene copolymers with transition metal catalysts. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.05.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Mu H, Pan L, Song D, Li Y. Neutral Nickel Catalysts for Olefin Homo- and Copolymerization: Relationships between Catalyst Structures and Catalytic Properties. Chem Rev 2015; 115:12091-137. [DOI: 10.1021/cr500370f] [Citation(s) in RCA: 253] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Hongliang Mu
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Li Pan
- School
of Material Science and Engineering, and Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Dongpo Song
- Department
of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Yuesheng Li
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- School
of Material Science and Engineering, and Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
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Yao E, Wang J, Chen Z, Ma Y. Homo- and Heteroligated Salicylaldiminato Titanium Complexes with Different Substituents Ortho to the Phenoxy Oxygens for Ethylene and Ethylene/1-Hexene (Co)polymerization. Macromolecules 2014. [DOI: 10.1021/ma5017677] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Erdong Yao
- Beijing National Laboratory for Molecular Sciences (BNLMS), Center for Soft Matter Science and Engineering, Key Lab of Polymer Chemistry & Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Jianchun Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Center for Soft Matter Science and Engineering, Key Lab of Polymer Chemistry & Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhongtao Chen
- Beijing National Laboratory for Molecular Sciences (BNLMS), Center for Soft Matter Science and Engineering, Key Lab of Polymer Chemistry & Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Yuguo Ma
- Beijing National Laboratory for Molecular Sciences (BNLMS), Center for Soft Matter Science and Engineering, Key Lab of Polymer Chemistry & Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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Boccia AC, Scalcione G, Boggioni L, Tritto I. Multinuclear NMR Spectroscopic Characterization of a Fluorinated Enolatoimine Titanium Polymeryl Species in the Living Ethylene- co-Norbornene Polymerization. Organometallics 2014. [DOI: 10.1021/om500078r] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Antonella C. Boccia
- Istituto
per lo Studio delle Macromolecole, Consiglio Nazionale delle Ricerche (ISMAC−CNR) Via E. Bassini, 15, Milano 20133, Italy
| | - Giulia Scalcione
- Istituto
per lo Studio delle Macromolecole, Consiglio Nazionale delle Ricerche (ISMAC−CNR) Via E. Bassini, 15, Milano 20133, Italy
- Dipartimenti
di Chimica Industriale e Ingegneria Chimica, Politecnico di Milano, Via Mancinelli 7, Milano 20131, Italy
| | - Laura Boggioni
- Istituto
per lo Studio delle Macromolecole, Consiglio Nazionale delle Ricerche (ISMAC−CNR) Via E. Bassini, 15, Milano 20133, Italy
| | - Incoronata Tritto
- Istituto
per lo Studio delle Macromolecole, Consiglio Nazionale delle Ricerche (ISMAC−CNR) Via E. Bassini, 15, Milano 20133, Italy
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Long YY, Wang YX, Li BX, Li YG, Li YS. Living syndiospecific polymerization of propylene with sterically encumbered titanium complexes activated by MMAO. Polym Chem 2014. [DOI: 10.1039/c4py00813h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
On activation with MMAO, the newly designed titanium complex with bulky substituent promotes living polymerization of propylene, affording highly syndiotactic (rrrr 98.0%) polymers with high molecular weights and narrow molecular weight distributions (Mw/Mn ≤ 1.26).
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Affiliation(s)
- Ying-Yun Long
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Yong-Xia Wang
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Bai-Xiang Li
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Yan-Guo Li
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Yue-Sheng Li
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
- School of Material Science and Engineering
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Liu Z, Chen HX, Huang D, Zhang Y, Yao YM. A facile route to lithium complexes supported by β-ketoiminate ligands and their reactivity. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.09.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Makio H, Prasad AV, Terao H, Saito J, Fujita T. Isospecific propylene polymerization with in situ generated bis(phenoxy-amine)zirconium and hafnium single site catalysts. Dalton Trans 2013; 42:9112-9. [PMID: 23515526 DOI: 10.1039/c3dt00058c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bis(phenoxy-imine) Zr and Hf complexes were activated with (i)Bu3Al or (i)Bu2AlH in conjunction with Ph3CB(C6F5)4 and tested as catalysts for propylene polymerization with emphasis on the enantioselectivity of the isospecific species and the single site polymerization characteristics. The isoselective species was identified as the in situ generated bis(phenoxy-amine) complex whose isoselectivity was sensitive to subtle changes in ligand structure. By employing specific substituents at certain key positions the isotacticity reached an extremely high level comparable to high-end commercial isotactic polypropylenes (Tm > 160 °C). Single site polymerization characteristics depended upon the efficiency and selectivity of the in situ imine reduction which is sensitive to the substituent on the imine nitrogen and the reaction conditions. By using (i)Bu2AlH as a reducing agent, quantitative imine reduction can be achieved with a stoichiometric amount of the reducing agent. This lower alkylaluminum loading is beneficial for the catalyst and significantly enhances the polymerization activity and the molecular weight of the resultant polymer.
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Affiliation(s)
- Haruyuki Makio
- Mitsui Chemicals Singapore R&D Centre, Pte. Ltd. 50 Science Park Road, #06-08 The Kendall, Singapore Science Park II, Singapore 117406.
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Zhang H, Zhang HX, Cai XP, Zhang XQ. Titanium complex bearing 8-anilino-1-naphthalenesulfonate ligand: Synthesis and catalytic behavior toward ethylene (co-)polymerization. J Appl Polym Sci 2013. [DOI: 10.1002/app.38016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Suttil JA, McGuinness DS, Gardiner MG, Evans SJ. Ethylene polymerisation and oligomerisation with arene-substituted phenoxy-imine complexes of titanium: investigation of multi-mechanism catalytic behaviour. Dalton Trans 2013; 42:4185-96. [DOI: 10.1039/c3dt32183e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Random copolymers of propylene with 1,5-hexadiene containing only cyclopentane units in main chain and tailoring structure and mechanical properties of the copolymers. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.04.058] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Terao H, Iwashita A, Matsukawa N, Ishii S, Mitani M, Tanaka H, Nakano T, Fujita T. Ethylene and Ethylene/α-Olefin (Co)Polymerization Behavior of Bis(phenoxy−imine)Ti Catalysts: Significant Substituent Effects on Activity and Comonomer Incorporation. ACS Catal 2011. [DOI: 10.1021/cs100148a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Makio H, Terao H, Iwashita A, Fujita T. FI Catalysts for Olefin Polymerization—A Comprehensive Treatment. Chem Rev 2011; 111:2363-449. [DOI: 10.1021/cr100294r] [Citation(s) in RCA: 488] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Haruyuki Makio
- Research Center, Mitsui Chemicals, Inc., 580-32 Nagaura, Sodegaura, Chiba 299-0265, Japan
| | - Hiroshi Terao
- Research Center, Mitsui Chemicals, Inc., 580-32 Nagaura, Sodegaura, Chiba 299-0265, Japan
| | - Akihiko Iwashita
- Research Center, Mitsui Chemicals, Inc., 580-32 Nagaura, Sodegaura, Chiba 299-0265, Japan
| | - Terunori Fujita
- Research Center, Mitsui Chemicals, Inc., 580-32 Nagaura, Sodegaura, Chiba 299-0265, Japan
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Long YY, Ye WP, Tao P, Li YS. Novel heteroligated titanium complexes with fluorinated salicylaldiminato and β-enaminoketonato ligands: synthesis, characterization and catalytic behavior in vinyl addition polymerization of norbornene. Dalton Trans 2011; 40:1610-8. [DOI: 10.1039/c0dt01225d] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Huang W, Li B, Wang Y, Zhang W, Wang L, Li Y, Sun WH, Redshaw C. Synthesis, characterization and ethylene (co-)polymerization behavior of half-titanocene 2-(1-(arylimino)ethyl)quinolin-8-olate chlorides. Catal Sci Technol 2011. [DOI: 10.1039/c1cy00193k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Wu JQ, Mu JS, Zhang SW, Li YS. Vanadium(V) complexes containing tetradentate amine trihydroxy ligands as catalysts for copolymerization of cyclic olefins. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.23868] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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