1
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Fu Z, Song C, Chen C, Qi Y, Pei J, Chen Y, Zheng J, Zhao Y, Luo Y, Li X. Polar Molecules Regulating the Regio- and Stereoselectivity of Polymerization of Conjugated Dienes Catalyzed by CGC-Type Rare-Earth Metal Catalysts. Macromol Rapid Commun 2024; 45:e2300653. [PMID: 38261808 DOI: 10.1002/marc.202300653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/06/2024] [Indexed: 01/25/2024]
Abstract
Herein, a concise, effective, and scalable strategy is reported that the introduction of polar molecules (PMs) (e.g., anisole (PhOMe), phenetole (PhOEt), 2-methoxynaphthalene (NaphOMe), thioanisole (PhSMe), and N,N-dimethylaniline (PhNMe2)) as continuously coordinated neutral ligand of cationic active species in situ generated from the constrain-geometry-configuration-type rare-earth metal complexes A-F/AliBu3/[Ph3C][B(C6F5)4] ternary systems can easily switch the regio- and stereoselectivity of the polymerization of conjugated dienes (CDs, including 2-subsituted CDs such as isoprene (IP) and myrcene (MY), 1,2-disubstituted CD ocimene (OC), and 1-substituted polar CD 1-(para-methoxyphenyl)-1,3-butadiene (p-MOPB)) from poor selectivities to high selectivities (for IP and MY: 3,4-selectivity up to 99%; for OC: trans-1,2-selectivity up to 93% (mm up to 90%); for p-MOPB: 3,4-syndioselectivity (3,4- up to 99%, rrrr up to 96%)). DFT calculations explain the continuous coordination roles of PMs on the regulation of the regio- and stereoselectivity of the polymerization of CDs. In comparison with the traditional strategies, this strategy by adding some common PMs is easier and more convenient, decreasing the synthetic cost and complex operation of new metal catalyst and cocatalyst. Such regio- and stereoselective regulation method by using PMs is not reported for the coordination polymerization of olefins catalyzed by rare-earth metal and early transition metal complexes.
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Affiliation(s)
- Zhijie Fu
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Chuang Song
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Chongan Chen
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Yuanxia Qi
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Jingting Pei
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Yuwei Chen
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Jie Zheng
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Yanan Zhao
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Yi Luo
- PetroChina Petrochemical Research Institute, 7 Kunlun Road, Changping District, Beijing, 102206, China
| | - Xiaofang Li
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
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2
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Wang H, Lu W, Bi H, Dai S. Dibenzosuberyl substituents suppressing chain transfer in Bis(imino)pyridyl Iron(II) catalyzed ethylene polymerization. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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3
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Capacchione C, Grisi F, Lamberti M, Mazzeo M, Milani B, Milione S, Pappalardo D, Zuccaccia C, Pellecchia C. Metal Catalyzed Polymerization: From Stereoregular Poly(α‐olefins) to Tailor‐Made Biodegradable/Biorenewable Polymers and Copolymers. Eur J Inorg Chem 2023. [DOI: 10.1002/ejic.202200644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Carmine Capacchione
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno via Giovanni Paolo II 132 84084 Fisciano (SA) Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Fabia Grisi
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno via Giovanni Paolo II 132 84084 Fisciano (SA) Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Marina Lamberti
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno via Giovanni Paolo II 132 84084 Fisciano (SA) Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Mina Mazzeo
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno via Giovanni Paolo II 132 84084 Fisciano (SA) Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Barbara Milani
- Dipartimento di Scienze Chimiche e Farmaceutiche Università di Trieste Via Licio Giorgieri 1 34127 Trieste Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Stefano Milione
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno via Giovanni Paolo II 132 84084 Fisciano (SA) Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Daniela Pappalardo
- Dipartimento di Scienze e Tecnologie Università del Sannio Via de Sanctis snc 82100 Benevento Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Biologia e Biotecnologie Università di Perugia Via Elce di Sotto 8 06132 Perugia Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Claudio Pellecchia
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno via Giovanni Paolo II 132 84084 Fisciano (SA) Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
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4
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Recent progress on the tridentate iron complex catalysts for ethylene oligo-/polymerization. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2023. [DOI: 10.1016/bs.adomc.2022.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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5
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Ji M, Si G, Pan Y, Tan C, Chen M. Polymeric α-diimine palladium catalysts for olefin (co)polymerization. J Catal 2022. [DOI: 10.1016/j.jcat.2022.09.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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6
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Liao YD, Cai Q, Dai SY. Synthesis of High Molecular Weight Polyethylene and E-MA Copolymers Using Iminopyridine Ni(II) and Pd(II) Complexes Containing a Flexible Backbone and Rigid Axial Substituents. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2847-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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7
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2-(Arylimino)benzylidene-8-arylimino-5,6,7-trihydroquinoline Cobalt(II) Dichloride Polymerization Catalysts for Polyethylenes with Narrow Polydispersity. Catalysts 2022. [DOI: 10.3390/catal12101119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A series of 2-(arylimino)benzylidene-8-arylimino-5,6,7-trihydroquinoline cobalt(II) chlorides (Co1–Co6) containing a fused ring and a more inert phenyl group as the substituent at the imino-C atom has been synthesized using a one-pot synthesis method and fully characterized by FT-IR and elemental analysis. The molecular structures of Co2 and Co5 have been confirmed by X-ray diffraction as having a distorted square pyramidal geometry around a cobalt core with a tridentate N,N,N-chelating ligand and two chlorides. On activation with either methylaluminoxane (MAO) or modified methylaluminoxane (MMAO), Co1–Co6 exhibited high activities for ethylene polymerization. The least sterically hindered Co2 showed a maximum activity of 16.51 × 106 g (PE) mol−1 (Co) h−1 at a moderate temperature 50 °C. Additionally, ortho-fluoride Co6 was able to maintain a high activity not only at 70 °C but also after 60 min at 50 °C, highlighting its excellent thermal-stability and long catalytic lifetime. The resultant polyethylene showed clearly narrower molecular weight distribution (PDI: 1.3–3.1) than those produced by structurally related cobalt counterparts, indicating the positive influence of benzhydryl substitution on the catalysis. Moreover, the molecular weight (1.7–386.6 kg mol−1) of vinyl- or n-propyl-terminated polyethylene can be finely regulated by controlling polymerization parameters.
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8
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Sun Y, Wang Q, Pan Y, Pang W, Zou C, Chen M.
SiO
2
‐supported Ni(
II
) and Fe(
II
) Catalysts bearing Sodium ‐Sulfonate Group for Olefin Polymerization. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yao Sun
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 China
| | - Quan Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 China
| | - Yao Pan
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 China
| | - Wenmin Pang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 China
| | - Chen Zou
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 China
| | - Min Chen
- Institutes of Physical Science and Information Technology Anhui University Hefei Anhui 230601 China
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9
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Liu T, Liu M, Ma Y, Solan GA, Liang T, Sun WH. Cobalt catalysts bearing ortho‐(4,4'‐dichlorobenzhydryl) substituents and their use in generating narrowly dispersed polyethylene of high linearity. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tian Liu
- Institute of Chemistry Chinese Academy of Sciences Key Laboratory for Engineering Plastics CHINA
| | - Ming Liu
- Institute of Chemistry Chinese Academy of Sciences Key Laboratory for Engineering Plastics CHINA
| | - Yanping Ma
- Institute of Chemistry Chinese Academy of Sciences Key Laboratory for Engineering Plastics CHINA
| | | | - Tongling Liang
- Institute of Chemistry Chinese Academy of Sciences Key Laboratory for Engineering Plastics CHINA
| | - Wen-Hua Sun
- The Chinese Academy of Sciences Institute of Chemistry No.2, BeiyijieZhongguancun 100190 Beijing CHINA
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10
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Late Transition Metal Catalysts with Chelating Amines for Olefin Polymerization. Catalysts 2022. [DOI: 10.3390/catal12090936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Polyolefins are the most consumed polymeric materials extensively used in our daily life and are usually generated by coordination polymerization in the polyolefin industry. Olefin polymerization catalysts containing transition metal–organic compound combinations are undoubtedly crucial for the development of the polyolefin industry. The nitrogen donor atom has attracted considerable interest and is widely used in combination with the transition metal for the fine-tuning of the chemical environment around the metal center. In addition to widely reported olefin polymerization catalysts with imine and amide donors (sp2 hybrid N), late transition metal catalysts with chelating amine donors (sp3 hybrid N) for olefin polymerization have never been reviewed. In this review paper, we focus on late transition metal (Ni, Pd, Fe, and Co) catalysts with chelating amines for olefin polymerization. A variety of late transition metal catalysts bearing different neutral amine donors are surveyed for olefin polymerization, including amine–imine, amine–pyridine, α-diamine, and [N, N, N] tridentate ligands with amine donors. The relationship between catalyst structure and catalytic performance is also encompassed. This review aims to promote the design of late transition metal catalysts with unique chelating amine donors for the development of high-performance polyolefin materials.
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11
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Zheng Y, Jiang S, Liu M, Yu Z, Ma Y, Solan GA, Zhang W, Liang T, Sun WH. High molecular weight PE elastomers through 4,4-difluorobenzhydryl substitution in symmetrical α-diimino-nickel ethylene polymerization catalysts. RSC Adv 2022; 12:24037-24049. [PMID: 36200024 PMCID: PMC9435601 DOI: 10.1039/d2ra04321a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 08/17/2022] [Indexed: 11/30/2022] Open
Abstract
The following family of N,N-diaryl-2,3-dimethyl-1,4-diazabutadienes, ArN[double bond, length as m-dash]C(Me)C(Me)[double bond, length as m-dash]NAr (Ar = 2,6-Me2-4-{CH(4-FC6H4)2}C6H2L1, 2-Me-6-Et-4-{CH(4-FC6H4)2}C6H2L2, 2,4-{CH(4-FC6H4)2}2-6-MeC6H2L3, 2,4-{CH(4-FC6H4)2}2-6-EtC6H2L4, 2,4-{CH(4-FC6H4)2}2-6-iPrC6H2L5), each incorporating para-substituted 4,4-difluorobenzhydryl groups but differing in the ortho-pairing, have been synthesized and used as precursors to their respective nickel(ii) bromide complexes, Ni1-Ni5. Compound characterization has been achieved through a combination of FT-IR, multinuclear NMR spectroscopy (1H, 13C, 19F) and elemental analysis. In addition, L1, Ni1 and Ni5 have been structurally characterized with Ni1 and Ni5 revealing similarly distorted tetrahedral geometries about nickel but with distinct differences in the steric protection offered by the ortho-substituents. All nickel complexes, under suitable activation, showed high activity for ethylene polymerization with a predilection towards forming branched high molecular weight polyethylene with narrow dispersity. Notably the most sterically bulky Ni5, under activation with either EtAlCl2, Et2AlCl or EASC, was exceptionally active (0.9-1.0 × 107 g of PE per (mol of Ni) per h) at an operating temperature of 40 °C. Furthermore, the polyethylene generated displayed molecular weights close to one million g mol-1 (M w range: 829-922 kg mol-1) with high branching densities (86-102/1000 carbons) and a selectivity for short chain branches (% Me = 94.3% (EtAlCl2), 87.2% (Et2AlCl), 87.7% (EASC)). Further analysis of the mechanical properties of the polymers produced at 40 °C and 50 °C using Ni5 highlighted the key role played by crystallinity (X c) and molecular weight (M w) on tensile strength (σ b) and elongation at break (ε b). In addition, stress-strain recovery tests reveal these high molecular weight polymers to exhibit characteristics of thermoplastic elastomers (TPEs).
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Affiliation(s)
- Yuting Zheng
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine Changchun 130117 China
- Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
| | - Shu Jiang
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine Changchun 130117 China
- Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
| | - Ming Liu
- Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
| | - Zhixin Yu
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine Changchun 130117 China
| | - Yanping Ma
- Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- Department of Chemistry, University of Leicester University Road Leicester LE1 7RH UK
| | - Gregory A Solan
- Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- Department of Chemistry, University of Leicester University Road Leicester LE1 7RH UK
| | - Wenjuan Zhang
- Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- Beijing Key Laboratory of Clothing Materials R&D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, School of Materials Science and Engineering, Beijing Institute of Fashion Technology Beijing 100029 China
| | - Tongling Liang
- Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
| | - Wen-Hua Sun
- Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
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12
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Ding B, Chang G, Yan Z, Dai S. Ethylene (co) oligomerization using iminopyridyl Ni(II) and Pd(II) complexes bearing benzocycloalkyl moieties to access hyperbranched ethylene oligomers and ethylene-MA co-oligomers. Front Chem 2022; 10:961426. [PMID: 35991594 PMCID: PMC9386154 DOI: 10.3389/fchem.2022.961426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
Hyperbranched ethylene oligomers and polar functionalized co-oligomers synthesized via ethylene chain walking (co) oligomerization is a very attractive strategy. In this study, a series of dibenzhydryl iminopyridyl ligands with benzocycloalkyl and naphthyl moieties and the corresponding Ni(II) and Pd(II) complexes were synthesized and characterized. The Ni(II) complexes were highly effective in ethylene oligomerization and ethylene oligomers with hyperbranched microstructures were generated from this system. The corresponding Pd(II) complexes showed moderate oligomerization activities in ethylene oligomerization and hyperbranched ethylene oligomers were also yielded from the system. More significantly, the Pd(II) complexes can also effectively promote the co-oligomerization of ethylene with methyl acrylate (MA) to obtain hyperbranched polar functionalized ethylene-MA co-oligomers. The reaction temperature, catalyst ligand structure and metal type all have significant effects on ethylene (co) oligomerization with respect to catalytic activity, molecular weight and topology of the oligomers.
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Affiliation(s)
- Beihang Ding
- Institute of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, China
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, China
| | - Guanru Chang
- School of Chemistry and Chemical Engineering, Key Laboratory of Inorganic Functional Material, Huangshan University, Huangshan, China
| | - Zhengpeng Yan
- Institute of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, China
| | - Shengyu Dai
- Institute of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, China
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, China
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13
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Yruegas S, Paccagnini M, Ho SC, Sattler A, Chirik PJ. Nickel-Catalyzed Dimerization of Di- and Trisubstituted Olefins. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sam Yruegas
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Michele Paccagnini
- ExxonMobil Technology & Engineering Company, 1545 Route 22 East, Annandale, New Jersey 08801, United States
| | - Suzzy C. Ho
- ExxonMobil Technology & Engineering Company, 1545 Route 22 East, Annandale, New Jersey 08801, United States
| | - Aaron Sattler
- ExxonMobil Technology & Engineering Company, 1545 Route 22 East, Annandale, New Jersey 08801, United States
| | - Paul J. Chirik
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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14
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Liu M, Jiang S, Ma Y, Solan GA, Sun Y, Sun WH. CF 3O-Functionalized Bis(arylimino)pyridine–Cobalt Ethylene Polymerization Catalysts: Harnessing Solvent Effects on Performance and Polymer Properties. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00252] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ming Liu
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- CAS Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shu Jiang
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yanping Ma
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Department of Chemistry, University of Leicester, University Road, Leicester LE1 7RH, U.K
| | - Gregory A. Solan
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Department of Chemistry, University of Leicester, University Road, Leicester LE1 7RH, U.K
| | - Yang Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wen-Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- CAS Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
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15
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Ge Y, Lu Z, Dai S. Flexible Axial Shielding Strategy for the Synthesis of High-Molecular-Weight Polyethylene and Polar Functionalized Polyethylene with Pyridine-Imine Ni(II) and Pd(II) Complexes. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- You Ge
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Zhou Lu
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui 230601, China
| | - Shengyu Dai
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui 230601, China
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16
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Yuan SF, Wang L, Yan Y, Liu T, Flisak Z, Ma Y, Sun WH. 4,4'-Dimethoxybenzhydryl substituent augments performance of bis(imino)pyridine cobalt-based catalysts in ethylene polymerization. RSC Adv 2022; 12:15741-15750. [PMID: 35685715 PMCID: PMC9127841 DOI: 10.1039/d2ra01547a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 05/17/2022] [Indexed: 11/21/2022] Open
Abstract
A series of cobalt complexes with bis(imino)pyridine derivatives featuring unsymmetrical substitution with bulky groups has been synthesized and characterized. The molecular structures of two representatives have been determined by the single-crystal X-ray diffraction study, revealing distorted tetrahedral geometry with different degrees of steric hindrance imparted by the two inequivalent aryl groups attached to the imine nitrogen atoms. On activation with either MAO or MMAO, these complexes display high activity toward ethylene polymerization, reaching 8.71 × 106 g of PE (mol of Co)−1 h−1 at 60 °C and produce polyethylene of high molecular weight (Mw = 5.27 × 105 g mol−1) and low dispersity. The presence of the methoxy-substituent noticeably enhances the activity of the cobalt catalyst and increases the molecular weight of the resultant polyethylene. Employing ligands with 4,4′-dimethoxybenzhydryl groups, the cobalt precatalysts display high activities toward ethylene polymerization and produce highly linear polyethylenes, the high density polyethylene (HDPE).![]()
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Affiliation(s)
- Shi-Fang Yuan
- The School of Chemistry and Chemical Engineering, Institute of Applied Chemistry, Shanxi University Taiyuan 030006 China
| | - Luyao Wang
- The School of Chemistry and Chemical Engineering, Institute of Applied Chemistry, Shanxi University Taiyuan 030006 China .,Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Yi Yan
- The School of Chemistry and Chemical Engineering, Institute of Applied Chemistry, Shanxi University Taiyuan 030006 China .,Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Tian Liu
- The School of Chemistry and Chemical Engineering, Institute of Applied Chemistry, Shanxi University Taiyuan 030006 China .,Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Zygmunt Flisak
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China .,Faculty of Chemistry, University of Opole Oleska 48 45-052 Opole Poland
| | - Yanping Ma
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Wen-Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
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17
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Ge Y, Cai Q, Wang Y, Gao J, Chi Y, Dai S. Synthesis of High-Molecular-Weight Branched Polyethylene Using a Hybrid "Sandwich" Pyridine-Imine Ni(II) Catalyst. Front Chem 2022; 10:886888. [PMID: 35601545 PMCID: PMC9114440 DOI: 10.3389/fchem.2022.886888] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
Most pyridine-imine Ni(II) and Pd(II) catalysts tend to yield low-molecular-weight polyethylene and ethylene-based copolymers in olefin insertion polymerization, as the unilateral axial steric structure of such complexes often cannot provide effective shielding of the metal center. In this study, we synthesized a series of hybrid "semi-sandwich" and "sandwich" type pyridine-imine Ni(II) complexes by incorporating diarylmethyl or dibenzosuberyl groups onto 8-aryl-naphthyl motif. The as-prepared Ni(II) complexes afforded highly branched polyethylene with high molecular weights (level of 105 g/mol), and moderate activities (level of 105 g/(molh)) in ethylene polymerization. Most interestingly, compared to "semi-sandwich" Ni(II) complexes bearing (2-diarylmethyl-8-aryl)naphthyl units, the "full-sandwich" counterpart containing (2-dibenzosuberyl-8-aryl)naphthyl motif was able to produce higher-molecular-weight polyethylene with higher branching density. In addition, the effect of remote non-conjugated electronic substituents in diarylmethyl groups of the Ni(II) system was also observed in ethylene polymerization.
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Affiliation(s)
- You Ge
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, China
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, China
| | - Qi Cai
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, China
| | - Yuyin Wang
- Key Laboratory of Advanced Structural Materials of Ministry of Education, College of Material Science and Engineering, College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, China
| | - Jiangang Gao
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, China
| | - Yue Chi
- Key Laboratory of Advanced Structural Materials of Ministry of Education, College of Material Science and Engineering, College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, China
| | - Shengyu Dai
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, China
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, China
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18
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Jiang S, Zheng Y, Liu M, Yu Z, Ma Y, Solan GA, Zhang W, Liang T, Sun WH. Polyethylene Waxes with Short Chain Branching via Steric and Electronic Tuning of an 8-(Arylimino)-5,6,7-trihydroquinoline-nickel Catalyst. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00100] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shu Jiang
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun 130117, China
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yuting Zheng
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun 130117, China
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Ming Liu
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhixin Yu
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun 130117, China
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yanping Ma
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Department of Chemistry, University of Leicester, University Road, Leicester LE1 7RH, U.K
| | - Gregory A. Solan
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Department of Chemistry, University of Leicester, University Road, Leicester LE1 7RH, U.K
| | - Wenjuan Zhang
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Beijing Key Laboratory of Clothing Materials R&D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, School of Materials Science and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
| | - Tongling Liang
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wen-Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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19
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Direct synthesis of hyperbranched ethene oligomers and ethene‐
MA
co‐oligomers using iminopyridyl systems with weak neighboring group interactions. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220047] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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20
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Investigating the Effects of Para-methoxy Substitution in Sterically Enhanced Unsymmetrical Bis(arylimino)pyridine-cobalt Ethylene Polymerization Catalysts. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2670-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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21
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Zubkevich SV, Tuskaev VA, Gagieva SC, Bulychev BM. Catalytic oligomerization and polymerization of ethylene with complexes of iron triad metals: influence of metal nature and new perspectives. RUSSIAN CHEMICAL REVIEWS 2022. [DOI: 10.1070/rcr5021] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Liu M, Zhang R, Ma Y, Han M, Solan GA, Yang W, Liang T, Sun WH. Trifluoromethoxy-substituted nickel catalysts for producing highly branched polyethylenes: impact of solvent, activator and N,N′-ligand on polymer properties. Polym Chem 2022. [DOI: 10.1039/d1py01637g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly branched and narrowly dispersed polyethylenes with high or ultra-high molecular weights are accessible using the depicted nickel precatalyst/activator combinations.
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Affiliation(s)
- Ming Liu
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- CAS Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Randi Zhang
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yanping Ma
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Mingyang Han
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- CAS Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Gregory A. Solan
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Department of Chemistry, University of Leicester, University Road, Leicester LE1 7RH, UK
| | - Wenhong Yang
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Tongling Liang
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wen-Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- CAS Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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23
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Magazova G, Cho Y, Muhlenkamp JA, Hicks JC. Single-site, Ni-modified Wells–Dawson-type polyoxometalate for propylene dimerization. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01065h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Propylene dimerization to linear products on isolated Ni2+ sites of modified Wells–Dawson-type polyoxometalates.
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Affiliation(s)
- Galiya Magazova
- Department of Chemical and Biomolecular Engineering, 250 Nieuwland Hall University of Notre Dame, Notre Dame, IN 46556, USA
| | - Yoonrae Cho
- Department of Chemical and Biomolecular Engineering, 250 Nieuwland Hall University of Notre Dame, Notre Dame, IN 46556, USA
| | - Jessica A. Muhlenkamp
- Department of Chemical and Biomolecular Engineering, 250 Nieuwland Hall University of Notre Dame, Notre Dame, IN 46556, USA
| | - Jason C. Hicks
- Department of Chemical and Biomolecular Engineering, 250 Nieuwland Hall University of Notre Dame, Notre Dame, IN 46556, USA
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24
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Lu Z, Liao Y, Fan W, Dai S. Efficient suppression of the chain transfer reaction in ethylene coordination polymerization with dibenzosuberyl substituents. Polym Chem 2022. [DOI: 10.1039/d2py00282e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Catalysts with dibenzosuberyl substituents possess a superior ability to suppress chain transfer in ethylene (co)polymerization, producing high molecular weight polyethylenes and functionalized polyethylenes (ethylene-MA copolymers).
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Affiliation(s)
- Zhou Lu
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui, 230601, China
| | - Yudan Liao
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui, 230601, China
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Weigang Fan
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui, 230601, China
| | - Shengyu Dai
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui, 230601, China
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
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25
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Seth K. Recent progress in rare-earth metal-catalyzed sp 2 and sp 3 C–H functionalization to construct C–C and C–heteroelement bonds. Org Chem Front 2022. [DOI: 10.1039/d1qo01859k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The review presents rare-earth metal-catalyzed C(sp2/sp3)–H functionalization accessing C–C/C–heteroatom bonds and olefin (co)polymerization, highlighting substrate scope, mechanistic realization, and origin of site-, enantio-/diastereo-selectivity.
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Affiliation(s)
- Kapileswar Seth
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) – Guwahati, Sila Katamur, Changsari, Kamrup 781101, Assam, India
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26
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Yan Z, Bi H, Ding B, Wang H, Xu G, Dai S. A rigid-flexible double-layer steric strategy for ethylene (co)oligomerization with pyridine-imine Ni( ii) and Pd( ii) complexes. NEW J CHEM 2022. [DOI: 10.1039/d2nj00183g] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rigid-flexible double-layer steric strategy enhances the molecular weight of the resulting ethylene oligomers and promotes the co-oligomerization of ethylene and methyl acrylate.
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Affiliation(s)
- Zhengpeng Yan
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui, 230601, China
| | - Huiqin Bi
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Beihang Ding
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui, 230601, China
| | - Hui Wang
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Guoyong Xu
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui, 230601, China
| | - Shengyu Dai
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui, 230601, China
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
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27
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Zhang Q, Zuo Z, Ma Y, Liang T, Yang X, Sun WH. Fluorinated 2,6-Bis(arylimino)pyridyliron Complexes Targeting Bimodal Dispersive Polyethylene; probing chain termination pathway via a combined experimental and DFT study. Dalton Trans 2022; 51:8290-8302. [DOI: 10.1039/d2dt00868h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The fluorinated 2,6-bis(arylimino)pyridyl iron (II) complexes, [2-[CMeN{2,4-{(4-FC6H4)2CH}2-6-F}]-6-(CMeNAr)C5H3N]FeCl2 (Ar = 2,6-Me2C6H3 Fe1, 2,6-Et2C6H3 Fe2, 2,6-iPr2C6H3 Fe3, 2,4,6-Me3C6H2 Fe4, and 2,6-Et2-4-MeC6H2 Fe5) and [2-[CMeN{2-{(4-FC6H4)2CH}-4-{(C6H5)CHAr’}-6-F}]-6-(CMeN(2,6-iPr2C6H3))C5H3N] FeCl2 (Ar’ = 3-(4-FC6H4)2CH}2-4-NH2-5-FC6H2 Fe6), being verified with...
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28
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Chen A, Liao D, Chen C. Promoting Ethylene (co)Polymerization in Aliphatic Hydrocarbon Solvents Using
tert
‐Butyl
Substituted Nickel Catalysts. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100642] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ao Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China Hefei Anhui 230026 China
| | - Daohong Liao
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China Hefei Anhui 230026 China
| | - Changle Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China Hefei Anhui 230026 China
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29
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Sheng D, Zhang Y, Wang Z, Xu G, Song Q, Shan D, Hou H. Selective ethylene oligomerization based on Fe-containing metal-organic coordination polymer catalysts. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Fan H, Chang G, Bi H, Gui X, Wang H, Xu G, Dai S. Facile Synthesis of Hyperbranched Ethylene Oligomers and Ethylene/Methyl Acrylate Co-oligomers with Different Microscopic Chain Architectures. ACS POLYMERS AU 2021; 2:88-96. [PMID: 36855342 PMCID: PMC9954315 DOI: 10.1021/acspolymersau.1c00039] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Low-molecular-weight (MW) ethylene oligomers with hyperbranched microstructures are often difficult to be synthesized by traditional catalytic processes. In this study, a series of N-terphenyl iminopyridyl ligands and the corresponding Pd(II) and Ni(II) complexes bearing remote conjugated substituents with different electronic effects (H, Me, F, Cl, and tBu) were synthesized in a simple and efficient way. These Pd(II) and Ni(II) complexes were highly effective in the ethylene oligomerization and co-oligomerization with methyl acrylate (MA). Low-MW ethylene oligomers with hyperbranched microstructures were generated using the iminopyridyl Pd(II) and Ni(II) complexes in ethylene oligomerization. More importantly, polar functionalized ethylene-MA co-oligomers with low MWs and varying incorporation ratios were generated via ethylene and MA co-oligomerization using the Pd(II) complexes. Most notably, these ethylene oligomers obtained by different metal species showed a significant difference in microscopic chain architectures. The remote conjugated electron effect showed little effect on the polymerization parameters of the iminopyridyl system, which is very different from those of the salicylaldiminato system.
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Affiliation(s)
- Huijun Fan
- Institutes
of Physical Science and Information Technology, Key Laboratory of
Structure and Functional Regulation of Hybrid Materials of Ministry
of Education, Anhui University, Hefei, Anhui 230601, China
| | - Guanru Chang
- School
of Chemistry and Chemical Engineering, Key Laboratory of Inorganic
Functional Material, Huangshan University, Huangshan, Anhui 245041, China
| | - Huiqin Bi
- School
of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Xu Gui
- School
of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Hui Wang
- School
of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China,
| | - Guoyong Xu
- Institutes
of Physical Science and Information Technology, Key Laboratory of
Structure and Functional Regulation of Hybrid Materials of Ministry
of Education, Anhui University, Hefei, Anhui 230601, China,
| | - Shengyu Dai
- Institutes
of Physical Science and Information Technology, Key Laboratory of
Structure and Functional Regulation of Hybrid Materials of Ministry
of Education, Anhui University, Hefei, Anhui 230601, China,School
of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China,
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31
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Li D, Ma F, Guo L, Huang J, Zhang Y, Li F, Li C. Polynuclear (α‐diimine) nickel(II) complex as catalyst for ethylene oligomerization. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6509] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Dan Li
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering Northeast Petroleum University Daqing China
| | - Fengmin Ma
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering Northeast Petroleum University Daqing China
| | - Lijun Guo
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering Northeast Petroleum University Daqing China
| | - Jin Huang
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering Northeast Petroleum University Daqing China
- Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology Daqing Normal University Daqing China
| | - Yu Zhang
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering Northeast Petroleum University Daqing China
| | - Feng Li
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering Northeast Petroleum University Daqing China
| | - Cuiqin Li
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering Northeast Petroleum University Daqing China
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32
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Zhang Q, Lin W, Liu T, Ye Z, Liang T, Sun WH. Fluorinated Sterically Bulky Mononuclear and Binuclear 2-Iminopyridylnickel Halides for Ethylene Polymerization: Effects of Ligand Frameworks and Remote Substituents. ACS OMEGA 2021; 6:30157-30172. [PMID: 34778687 PMCID: PMC8582273 DOI: 10.1021/acsomega.1c05418] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 10/19/2021] [Indexed: 06/02/2023]
Abstract
In the present work, four new mono(imino)pyridine ligands, 2-((2,4-bis(bis(4-R-phenyl)methyl)-6-fluorophenylimino)methyl)pyridine (R = H, L1; R = OCH3, L2; R = F, L3) and 2-((2-(bis(4-fluorophenyl)methyl)-4-((3-(bis(4-fluorophenyl)methyl)-4-amine-5-fluoro-phenyl)(phenyl)methyl)-6-fluorophenylimino)methyl)pyridine (L4), have been designed in good yields. Additionally, three novel benzhydryl-bridged bis(imino)pyridine ligands, 2-(2-(bis(4-R-phenyl)methyl)-6-fluoro-phenylimino)pyridine (R = H, L5; R = OCH3, L6; R = F, L7), were also prepared for comparison. All these organic compounds have been characterized by FT-IR analysis, 1H/13C NMR spectroscopy, and elemental analysis. The treatment of L1-L7 with nickel halides afforded the corresponding monometallic (Ni1-Ni4) and bimetallic (Ni5-Ni7) nickel complexes in moderate to good overall yields. Upon activation with methylaluminoxane (MAO), Ni4 Cl showed the highest activity up to 8.3 × 106 g of polyethylene (PE) (mol of Ni)-1 h-1 among Ni1-Ni7 for ethylene polymerization. In all cases, unsaturated PEs with low molecular weights (0.7-13.3 kg mol-1) were produced effectively. The introduction of remote para-substituents into the benzhydryl groups showed a beneficial effect on catalytic activity with the overall activities following the order of Ni-F > Ni-OCH3 > Ni-H. In addition, these para-substituents were also found to affect not only the catalytic performance of catalysts but also the branching content of the PE product. Generally, the resultant PE waxes were moderately branched and contained both terminal vinyls (-CH=CH2) and internal vinylenes (-CH=CH-) while with different ratios of vinyls to vinylenes. Notably, the polymers produced using para-methoxy-substituted Ni2/MAO and Ni6/MAO possessed the least branching content and uniquely high vinyl contributions.
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Affiliation(s)
- Qiuyue Zhang
- Key
Laboratory of Engineering Plastics and Beijing National Laboratory
for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- CAS
Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenhua Lin
- Key
Laboratory of Engineering Plastics and Beijing National Laboratory
for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Tian Liu
- Key
Laboratory of Engineering Plastics and Beijing National Laboratory
for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- CAS
Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhibin Ye
- Department
of Chemical and Materials Engineering, Concordia
University, Montreal, Quebec H3G1M8, Canada
| | - Tongling Liang
- Key
Laboratory of Engineering Plastics and Beijing National Laboratory
for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wen-Hua Sun
- Key
Laboratory of Engineering Plastics and Beijing National Laboratory
for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- CAS
Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy
of Sciences, Lanzhou 730000, China
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33
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Zuo Z, Han M, Ma Y, Solan GA, Hu X, Liang T, Sun W. Fluorinated bis(arylimino)‐6,7‐dihydro‐5
H
‐quinoline‐cobalt polymerization catalysts: Electronic versus steric modulation in the formation of vinyl‐terminated linear PE waxes. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6500] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zheng Zuo
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing China
- CAS Research/Education Center for Excellence in Molecular Sciences and International School University of Chinese Academy of Sciences Beijing China
| | - Mingyang Han
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing China
- CAS Research/Education Center for Excellence in Molecular Sciences and International School University of Chinese Academy of Sciences Beijing China
| | - Yanping Ma
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing China
| | - Gregory A. Solan
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing China
- Department of Chemistry University of Leicester Leicester UK
| | - Xinquan Hu
- Department of Chemistry University of Leicester Leicester UK
- College of Chemical Engineering Zhejiang University of Technology Hangzhou China
| | - Tongling Liang
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing China
| | - Wen‐Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing China
- CAS Research/Education Center for Excellence in Molecular Sciences and International School University of Chinese Academy of Sciences Beijing China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou China
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34
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Zhang R, Han M, Oleynik IV, Solan GA, Oleynik II, Ma Y, Liang T, Sun W. Boosting activity, thermostability, and lifetime of iron ethylene polymerization catalysts through
gem
‐dimethyl substitution and incorporation of
ortho
‐cycloalkyl substituents. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6376] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Randi Zhang
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing China
- CAS Research/Education Center for Excellence in Molecular Sciences University of Chinese Academy of Sciences Beijing China
| | - Mingyang Han
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing China
- CAS Research/Education Center for Excellence in Molecular Sciences University of Chinese Academy of Sciences Beijing China
| | - Irina V. Oleynik
- Vorozhtsov Novosibirsk Institute of Organic Chemistry Novosibirsk Russia
| | - Gregory A. Solan
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing China
- Department of Chemistry University of Leicester Leicester UK
| | - Ivan I. Oleynik
- Vorozhtsov Novosibirsk Institute of Organic Chemistry Novosibirsk Russia
| | - Yanping Ma
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing China
| | - Tongling Liang
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing China
| | - Wen‐Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing China
- CAS Research/Education Center for Excellence in Molecular Sciences University of Chinese Academy of Sciences Beijing China
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35
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Zhang R, Oleynik IV, Li J, Solan GA, Ma Y, Jin L, Oleynik II, Hu X, Sun W. Integrating Ring‐Size Adjustable Cycloalkyl and Benzhydryl Groups as the Steric Protection in Bis(arylimino)trihydroquinoline‐Cobalt Catalysts for Ethylene Polymerization. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Randi Zhang
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- CAS Research/Education Center for Excellence in Molecular Sciences University of Chinese Academy of Sciences Beijing 100049 China
| | - Irina V. Oleynik
- Vorozhtsov Novosibirsk Institute of Organic Chemistry Pr. Lavrentjeva 9 Novosibirsk 630090 Russia
| | - Jianqing Li
- College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 China
| | - Gregory A. Solan
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- Department of Chemistry University of Leicester University Road Leicester LE1 7RH UK
| | - Yanping Ma
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Liqun Jin
- College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 China
| | - Ivan I. Oleynik
- Vorozhtsov Novosibirsk Institute of Organic Chemistry Pr. Lavrentjeva 9 Novosibirsk 630090 Russia
| | - Xinquan Hu
- College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 China
| | - Wen‐Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- CAS Research/Education Center for Excellence in Molecular Sciences University of Chinese Academy of Sciences Beijing 100049 China
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36
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Ge Y, Li S, Wang H, Dai S. Synthesis of Branched Polyethylene and Ethylene-MA Copolymers Using Unsymmetrical Iminopyridyl Nickel and Palladium Complexes. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00388] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- You Ge
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui, 230601, China
| | - Shuaikang Li
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui, 230601, China
| | - Hui Wang
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui, 241000, China
| | - Shengyu Dai
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui, 230601, China
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui, 241000, China
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37
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Catalytic Performance of Cycloalkyl-Fused Aryliminopyridyl Nickel Complexes toward Ethylene Polymerization by QSPR Modeling. Catalysts 2021. [DOI: 10.3390/catal11080920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Quantitative structure–property relationship (QSPR) modeling is performed to investigate the role of cycloalkyl-fused rings on the catalytic performance of 46 aryliminopyridyl nickel precatalysts. The catalytic activities for nickel complexes in ethylene polymerization are well-predicted by the obtained 2D-QSPR model, exploring the main contribution from the charge distribution of negatively charged atoms. Comparatively, 3D-QSPR models show better predictive and validation capabilities than that of 2D-QSPR for both catalytic activity (Act.) and the molecular weight of the product (Mw). Three-dimensional contour maps illustrate the predominant effect of a steric field on both catalytic properties; smaller sizes of cycloalkyl-fused rings are favorable to Act.y, whereas they are unfavorable to Mw. This study may provide assistance in the design of a new nickel complex with high catalytic performance.
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38
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Singh A, Maji A, Joshi M, Choudhury AR, Ghosh K. Designed pincer ligand supported Co(II)-based catalysts for dehydrogenative activation of alcohols: Studies on N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines. Dalton Trans 2021; 50:8567-8587. [PMID: 34075925 DOI: 10.1039/d0dt03748f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Base-metal catalysts Co1, Co2 and Co3 were synthesized from designed pincer ligands L1, L2 and L3 having NNN donor atoms respectively. Co1, Co2 and Co3 were characterized by IR, UV-Vis. and ESI-MS spectroscopic studies. Single crystal X-ray diffraction studies were investigated to authenticate the molecular structures of Co1 and Co3. Catalysts Co1, Co2 and Co3 were utilized to study the dehydrogenative activation of alcohols for N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines. Under optimized reaction conditions, a broad range of substrates including alcohols, anilines and ketones were exploited. A series of control experiments for N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines were examined to understand the reaction pathway. ESI-MS spectral studies were investigated to characterize cobalt-alkoxide and cobalt-hydride intermediates. Reduction of styrene by evolved hydrogen gas during the reaction was investigated to authenticate the dehydrogenative nature of the catalysts. Probable reaction pathways were proposed for N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines on the basis of control experiments and detection of reaction intermediates.
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Affiliation(s)
- Anshu Singh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
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39
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Matsko MA, Semikolenova NV, Zakharov VA, Soshnikov IE, Shundrina IK, Sun W. Formation of branched polyethylenes by ethylene homopolymerization using
LNiBr
2
homo‐ and heterogeneous precatalysts: Interpretation of the polymer structures in comparison with commercial
LLDPE. J Appl Polym Sci 2021. [DOI: 10.1002/app.50436] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | - Vladimir A. Zakharov
- Boreskov Institute of Catalysis, SB RAS Novosibirsk Russia
- Novosibirsk State University Novosibirsk Russia
| | - Igor E. Soshnikov
- Boreskov Institute of Catalysis, SB RAS Novosibirsk Russia
- Novosibirsk State University Novosibirsk Russia
| | - Inna K. Shundrina
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS Novosibirsk Russia
| | - Wen‐Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences Institute of Chemistry, Chinese Academy of Sciences Beijing China
- CAS Research/Education Center for Excellence in Molecular Sciences University of Chinese Academy of Sciences Beijing China
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40
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Synthesis of a Ni Complex Chelated by a [2.2]Paracyclophane-Functionalized Diimine Ligand and Its Catalytic Activity for Olefin Oligomerization. Molecules 2021; 26:molecules26092719. [PMID: 34063154 PMCID: PMC8124533 DOI: 10.3390/molecules26092719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 04/29/2021] [Accepted: 05/03/2021] [Indexed: 11/29/2022] Open
Abstract
A diimine ligand having two [2.2]paracyclophanyl substituents at the N atoms (L1) was prepared from the reaction of amino[2.2]paracyclophane with acenaphtenequinone. The ligand reacts with NiBr2(dme) (dme: 1,2-dimethoxyethane) to form the dibromonickel complex with (R,R) and (S,S) configuration, NiBr2(L1). The structure of the complex was confirmed by X-ray crystallography. NiBr2(L1) catalyzes oligomerization of ethylene in the presence of methylaluminoxane (MAO) co-catalyst at 10–50 °C to form a mixture of 1- and 2-butenes after 3 h. The reactions for 6 h and 8 h at 25 °C causes further increase of 2-butene formed via isomerization of 1-butene and formation of hexenes. Reaction of 1-hexene catalyzed by NiBr2(L1)–MAO produces 2-hexene via isomerization and C12 and C18 hydrocarbons via oligomerization. Consumption of 1-hexene of the reaction obeys first-order kinetics. The kinetic parameters were obtained to be ΔG‡ = 93.6 kJ mol−1, ΔH‡ = 63.0 kJ mol−1, and ΔS‡ = −112 J mol−1deg−1. NiBr2(L1) catalyzes co-dimerization of ethylene and 1-hexene to form C8 hydrocarbons with higher rate and selectivity than the tetramerization of ethylene.
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41
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Chen C, Alalouni MR, Dong X, Cao Z, Cheng Q, Zheng L, Meng L, Guan C, Liu L, Abou-Hamad E, Wang J, Shi Z, Huang KW, Cavallo L, Han Y. Highly Active Heterogeneous Catalyst for Ethylene Dimerization Prepared by Selectively Doping Ni on the Surface of a Zeolitic Imidazolate Framework. J Am Chem Soc 2021; 143:7144-7153. [PMID: 33908757 DOI: 10.1021/jacs.1c02272] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The production of 1-butene by ethylene dimerization is an important chemical industrial process currently implemented using homogeneous catalysts. Here, we describe a highly active heterogeneous catalyst (Ni-ZIF-8) for ethylene dimerization, which consists of isolating Ni-active sites selectively located on the crystal surface of a zeolitic imidazolate framework. Ni-ZIF-8 can be easily prepared by a simple one-pot synthesis method in which site-specific anchoring of Ni is achieved spontaneously because of the incompatibility between the d8 electronic configuration of Ni2+ and the three-dimensional framework of ZIF-8. The full exposure and square-planar coordination of the Ni sites accounts for the high catalytic activity of Ni-ZIF-8. It exhibits an average ethylene turnover frequency greater than 1 000 000 h-1 (1-butene selectivity >85%) at 35 °C and 50 bar, far exceeding the activities of previously reported heterogeneous catalysts and many homogeneous catalysts under similar conditions. Moreover, compared to molecular Ni complexes used as homogeneous catalysts for ethylene dimerization, Ni-ZIF-8 has significantly higher stability and shows constant activity during 4 h of continuous reaction. Isotopic labeling experiments indicate that ethylene dimerization over Ni-ZIF-8 follows the Cossee-Arlman mechanism, and detailed characterizations combined with density functional theory calculations rationalize this observed high activity.
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Affiliation(s)
- Cailing Chen
- Advanced Membranes and Porous Materials Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Mohammed R Alalouni
- Advanced Membranes and Porous Materials Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Xinglong Dong
- Advanced Membranes and Porous Materials Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Zhen Cao
- KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Qingpeng Cheng
- Advanced Membranes and Porous Materials Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Lirong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Lingkun Meng
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P.R. China
| | - Chao Guan
- KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Lingmei Liu
- Advanced Membranes and Porous Materials Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Edy Abou-Hamad
- Imaging and Characterization Core Lab, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Jianjian Wang
- Multi-scale Porous Materials Center, Institute of Advanced Interdisciplinary Studies, & School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P.R. China
| | - Zhan Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P.R. China
| | - Kuo-Wei Huang
- KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Luigi Cavallo
- KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Yu Han
- Advanced Membranes and Porous Materials Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
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42
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Liu T, Ma Y, Solan G, Liang T, Sun W. Exploring
ortho
‐(4,4′‐dimethoxybenzhydryl) substitution in iron ethylene polymerization catalysts: Co‐catalyst effects, thermal stability, and polymer molecular weight variations. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6259] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tian Liu
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing China
- CAS Research/Education Center for Excellence in Molecular Sciences University of Chinese Academy of Sciences Beijing China
| | - Yanping Ma
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing China
| | - Gregory Solan
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing China
- Department of Chemistry University of Leicester Leicester UK
| | - Tongling Liang
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing China
| | - Wen‐Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing China
- CAS Research/Education Center for Excellence in Molecular Sciences University of Chinese Academy of Sciences Beijing China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou China
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43
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Zhang R, Huang Y, Ma Y, Solan GA, Hu X, Liang T, Sun WH. Thermally resilient cobalt ethylene polymerization catalysts under the joint influence of co-catalyst, gem-dimethyl substitution and ortho-cycloalkyl ring size. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123684] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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44
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Investigations on the Ethylene Polymerization with Bisarylimine Pyridine Iron (BIP) Catalysts. Catalysts 2021. [DOI: 10.3390/catal11030407] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The kinetics and terminations of ethylene polymerization, mediated by five bisarylimine pyridine (BIP) iron dichloride precatalysts, and activated by large amounts of methyl aluminoxane (MAO) was studied. Narrow distributed paraffins from initially formed aluminum polymeryls and broader distributed 1-polyolefins and (bimodal) mixtures, thereof, were obtained after acidic workup. The main pathway of olefin formation is beta-hydrogen transfer to ethylene. The rate of polymerization in the initial phase is inversely proportional to the co-catalyst concentration for all pre-catalysts; a first-order dependence was found on ethylene and catalyst concentrations. The inhibition by aluminum alkyls is released to some extent in a second phase, which arises after the original methyl groups are transformed into n-alkyl entities and the aluminum polymeryls partly precipitate in the toluene medium. The catalysis is interpretable in a mechanism, wherein, the relative rate of chain shuttling, beta-hydrogen transfer and insertion of ethylene are determining the outcome. Beta-hydrogen transfer enables catalyst mobility, which leads to a (degenerate) chain growth of already precipitated aluminum alkyls. Stronger Lewis acidic centers of the single site catalysts, and those with smaller ligands, are more prone to yield 1-olefins and to undergo a faster reversible alkyl exchange between aluminum and iron.
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45
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The benzhydryl-modified 2-imino-1,10-phenanthrolyliron precatalyst in ethylene oligomerization. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121713] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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46
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Guo J, Zhang W, Liang T, Sun WH. Revisiting the 2-imino-1,10-phenanthrolylmetal precatalyst in ethylene oligomerization: Benzhydryl-modified cobalt(II) complexes and their dimerization of ethylene. Polyhedron 2021. [DOI: 10.1016/j.poly.2020.114865] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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47
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Zhou C, Li W, Qiu M, Li W, Liu H, Liu H, Zhang K, Chen X. Precisely regulating the acidity of mesoporous silica on the catalytic performance of 1-decene oligomerization. NEW J CHEM 2021. [DOI: 10.1039/d1nj00279a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Optimization of the acidity of Al-MCM-41 catalysts to improve the catalytic performance of 1-decene oligomerization.
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Affiliation(s)
- Cunhui Zhou
- Department of Chemistry
- School of Science
- Shanghai University
- Shanghai 201900
- China
| | - Wenqian Li
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering
- Shanghai Advanced Research Institute
- Chinese Academy of Science
- Shanghai 201210
- China
| | - Minghuang Qiu
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering
- Shanghai Advanced Research Institute
- Chinese Academy of Science
- Shanghai 201210
- China
| | - Wanting Li
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering
- Shanghai Advanced Research Institute
- Chinese Academy of Science
- Shanghai 201210
- China
| | - Honglei Liu
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering
- Shanghai Advanced Research Institute
- Chinese Academy of Science
- Shanghai 201210
- China
| | - Hongjiang Liu
- Department of Chemistry
- School of Science
- Shanghai University
- Shanghai 201900
- China
| | - Kun Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
| | - Xinqing Chen
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering
- Shanghai Advanced Research Institute
- Chinese Academy of Science
- Shanghai 201210
- China
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48
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Peng H, Li S, Li G, Dai S, Ji M, Liu Z, Guo L. Rotation‐restricted strategy to synthesize high molecular weight polyethylene using iminopyridyl nickel and palladium catalyst. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.6140] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hongwei Peng
- The Key Laboratory of Life‐Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering Qufu Normal University Qufu 273165 China
| | - Shuaikang Li
- Institutes of Physical Science and Information Technology Anhui University Hefei 230601 China
| | - Gen Li
- Institutes of Physical Science and Information Technology Anhui University Hefei 230601 China
| | - Shengyu Dai
- Institutes of Physical Science and Information Technology Anhui University Hefei 230601 China
| | - Mingjun Ji
- The Key Laboratory of Life‐Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering Qufu Normal University Qufu 273165 China
| | - Zhe Liu
- The Key Laboratory of Life‐Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering Qufu Normal University Qufu 273165 China
| | - Lihua Guo
- The Key Laboratory of Life‐Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering Qufu Normal University Qufu 273165 China
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49
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Suo H, Li Z, Oleynik IV, Wang Z, Oleynik II, Ma Y, Liu Q, Sun W. Achieving strictly linear polyethylenes by the
NNN
‐Fe precatalysts finely tuned with different sizes of
ortho
‐cycloalkyl substituents. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5937] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Hongyi Suo
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- CAS Research/Education Center for Excellence in Molecular Sciences University of Chinese Academy of Sciences Beijing 100049 China
| | - Zilong Li
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- CAS Research/Education Center for Excellence in Molecular Sciences University of Chinese Academy of Sciences Beijing 100049 China
| | - Irina V. Oleynik
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry Pr. Lavrentjeva 9 Novosibirsk 630090 Russia
| | - Zheng Wang
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Ivan I. Oleynik
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry Pr. Lavrentjeva 9 Novosibirsk 630090 Russia
| | - Yanping Ma
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Qingbin Liu
- College of Chemistry and Material Science Hebei Normal University Shijiazhuang 050024 China
| | - Wen‐Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- CAS Research/Education Center for Excellence in Molecular Sciences University of Chinese Academy of Sciences Beijing 100049 China
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50
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Mohammad Kazemi, Javidnia A, Ramezanian N, Zohuri GH, Mogheiseh M. Reactor Blend and Nanocomposite of Polyethylene Using a Binary Catalyst of Metallocene/Nickel. POLYMER SCIENCE SERIES B 2020. [DOI: 10.1134/s1560090420330027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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