1
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Kulyabin PS, Sharikov MI, Izmer VV, Kononovich DS, Goryunov GP, Alexeev NV, Uborsky DV, Vittoria A, Antinucci G, Ehm C, Budzelaar PHM, Cipullo R, Busico V, Voskoboynikov AZ. Triptycene as a scaffold in metallocene catalyzed olefin polymerization. Dalton Trans 2024; 53:9516-9525. [PMID: 38767874 DOI: 10.1039/d4dt01170h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
A set of metallocene olefin polymerization catalysts bearing triptycene moieties in either position 4-5 (complexes Ty1-Ty5) or in position 5-6 (complexes Ty6-Ty8) of the basic dimethylsilyl-bridged bis(indenyl) system has been tested in propene polymerization and in ethene/1-hexene copolymerization. Comparison of the results with QSPR (quantitative structure-property relationship) predictions not parametrized for these exotic ligand variations demonstrates that trends can still be identified by extrapolation. Interestingly, Ty7, upon suitable activation, provides a highly isotactic polypropylene with an exceptional amount of 2,1 regio-errors (8%). The previously developed QSPR type models successfully predicted the low regioselectivity of this catalyst, despite the fact that the catalyst structure differs significantly from the benchmark set.
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Affiliation(s)
- Pavel S Kulyabin
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia.
| | - Mikhail I Sharikov
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia.
| | - Vyatcheslav V Izmer
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia.
| | - Dmitry S Kononovich
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia.
| | - Georgy P Goryunov
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia.
| | - Nikita V Alexeev
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia.
| | - Dmitry V Uborsky
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia.
| | - Antonio Vittoria
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, 80126 Napoli, Italy.
| | - Giuseppe Antinucci
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, 80126 Napoli, Italy.
| | - Christian Ehm
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, 80126 Napoli, Italy.
| | - Peter H M Budzelaar
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, 80126 Napoli, Italy.
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, 80126 Napoli, Italy.
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, 80126 Napoli, Italy.
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2
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Antinucci G, Dereli B, Vittoria A, Budzelaar PHM, Cipullo R, Goryunov GP, Kulyabin PS, Uborsky DV, Cavallo L, Ehm C, Voskoboynikov AZ, Busico V. Selection of Low-Dimensional 3-D Geometric Descriptors for Accurate Enantioselectivity Prediction. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Giuseppe Antinucci
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O.
Box 902, 5600 AX Eindhoven, the Netherlands
| | - Busra Dereli
- Catalysis Research Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955, Saudi Arabia
| | - Antonio Vittoria
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O.
Box 902, 5600 AX Eindhoven, the Netherlands
| | - Peter H. M. Budzelaar
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O.
Box 902, 5600 AX Eindhoven, the Netherlands
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O.
Box 902, 5600 AX Eindhoven, the Netherlands
| | - Georgy P. Goryunov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
- DPI, P.O.
Box 902, 5600 AX Eindhoven, the Netherlands
| | - Pavel S. Kulyabin
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
- DPI, P.O.
Box 902, 5600 AX Eindhoven, the Netherlands
| | - Dmitry V. Uborsky
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
- DPI, P.O.
Box 902, 5600 AX Eindhoven, the Netherlands
| | - Luigi Cavallo
- Catalysis Research Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955, Saudi Arabia
| | - Christian Ehm
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O.
Box 902, 5600 AX Eindhoven, the Netherlands
| | - Alexander Z. Voskoboynikov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
- DPI, P.O.
Box 902, 5600 AX Eindhoven, the Netherlands
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O.
Box 902, 5600 AX Eindhoven, the Netherlands
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3
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Sian L, Dall’Anese A, Macchioni A, Tensi L, Busico V, Cipullo R, Goryunov GP, Uborsky D, Voskoboynikov AZ, Ehm C, Rocchigiani L, Zuccaccia C. Role of Solvent Coordination on the Structure and Dynamics of ansa-Zirconocenium Ion Pairs in Aromatic Hydrocarbons. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00653] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Leonardo Sian
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli studi di Perugia and CIRCC, Via Elce di sotto, 8, 06123 Perugia, Italy
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Anna Dall’Anese
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli studi di Perugia and CIRCC, Via Elce di sotto, 8, 06123 Perugia, Italy
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Alceo Macchioni
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli studi di Perugia and CIRCC, Via Elce di sotto, 8, 06123 Perugia, Italy
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Leonardo Tensi
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli studi di Perugia and CIRCC, Via Elce di sotto, 8, 06123 Perugia, Italy
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Georgy P. Goryunov
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Dmitry Uborsky
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Alexander Z. Voskoboynikov
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Christian Ehm
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Luca Rocchigiani
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli studi di Perugia and CIRCC, Via Elce di sotto, 8, 06123 Perugia, Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli studi di Perugia and CIRCC, Via Elce di sotto, 8, 06123 Perugia, Italy
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
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4
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Gao H, Chen S, Du B, Dai Z, Lu X, Zhang K, Pan L, Li Y, Li Y. Cyclic olefin copolymers containing both linear polyethylene and poly(ethylene- co-norbornene) segments prepared from chain shuttling copolymerization of ethylene and norbornene. Polym Chem 2022. [DOI: 10.1039/d1py01251g] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of novel HDPE/COC multiblock copolymers have been effectively obtained via chain shuttling copolymerization of ethylene and NBE. These promising copolymers exhibit excellent clarity, high heat resistance and balanced mechanical properties.
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Affiliation(s)
- Huan Gao
- Tianjin Key Lab of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Shangtao Chen
- Synthetic Resin Laboratory, PetroChina Petrochemical Research Institute, PetroChina Company Limited, Beijing 102206, China
| | - Bin Du
- Synthetic Resin Laboratory, PetroChina Petrochemical Research Institute, PetroChina Company Limited, Beijing 102206, China
| | - Zhenyu Dai
- Advanced Materials Research Center, Petrochemical Research Institute, PetroChina Company Limited, Beijing 102206, China
| | - Xu Lu
- Advanced Materials Research Center, Petrochemical Research Institute, PetroChina Company Limited, Beijing 102206, China
| | - Kunyu Zhang
- Advanced Materials Research Center, Petrochemical Research Institute, PetroChina Company Limited, Beijing 102206, China
| | - Li Pan
- Tianjin Key Lab of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Yang Li
- Advanced Materials Research Center, Petrochemical Research Institute, PetroChina Company Limited, Beijing 102206, China
| | - Yuesheng Li
- Tianjin Key Lab of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science & Engineering of Tianjin, Tianjin 300072, China
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5
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Zaccaria F, Zuccaccia C, Macchioni A. Hemi-metallocene Ti(IV) η3-allyl-type complexes: Structure, dynamics in solution and exploration of reactivity. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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Vittoria A, Goryunov GP, Izmer VV, Kononovich DS, Samsonov OV, Zaccaria F, Urciuoli G, Budzelaar PHM, Busico V, Voskoboynikov AZ, Uborsky DV, Ehm C, Cipullo R. Hafnium vs. Zirconium, the Perpetual Battle for Supremacy in Catalytic Olefin Polymerization: A Simple Matter of Electrophilicity? Polymers (Basel) 2021; 13:2621. [PMID: 34451163 PMCID: PMC8400551 DOI: 10.3390/polym13162621] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/02/2021] [Accepted: 08/03/2021] [Indexed: 11/17/2022] Open
Abstract
The performance of C2-symmetric ansa-hafnocene catalysts for isotactic polypropylene typically deteriorates at increasing temperature much faster than that of their zirconium analogues. Herein, we analyze in detail a set of five Hf/Zr metallocene pairs-including some of the latest generation catalysts-at medium- to high-polymerization temperature. Quantitative structure-activity relationship (QSAR) models for stereoselectivity, the ratio allyl/vinyl chain ends, and 2,1/3,1 misinsertions in the polymer indicate a strong dependence of polymerization performance on electrophilicity of the catalyst, which is a function of the ligand framework and the metal center. Based on this insight, the stronger performance decline of hafnocenes is ascribed to electrophilicity-dependent stabilization effects.
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Affiliation(s)
- Antonio Vittoria
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Georgy P Goryunov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
| | - Vyatcheslav V Izmer
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
| | - Dmitry S Kononovich
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
| | - Oleg V Samsonov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
| | - Francesco Zaccaria
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Universitaà di Perugia, 06123 Perugia, Italy
| | - Gaia Urciuoli
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Peter H M Budzelaar
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Alexander Z Voskoboynikov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
| | - Dmitry V Uborsky
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
| | - Christian Ehm
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
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7
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Chain Transfer to Solvent and Monomer in Early Transition Metal Catalyzed Olefin Polymerization: Mechanisms and Implications for Catalysis. Catalysts 2021. [DOI: 10.3390/catal11020215] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Even after several decades of intense research, mechanistic studies of olefin polymerization by early transition metal catalysts continue to reveal unexpected elementary reaction steps. In this mini-review, the recent discovery of two unprecedented chain termination processes is summarized: chain transfer to solvent (CTS) and chain transfer to monomer (CTM), leading to benzyl/tolyl and allyl type chain ends, respectively. Although similar transfer reactions are well-known in radical polymerization, only very recently they have been observed also in olefin insertion polymerization catalysis. In the latter context, these processes were first identified in Ti-catalyzed propene and ethene polymerization; more recently, CTS was also reported in Sc-catalyzed styrene polymerization. In the Ti case, these processes represent a unique combination of insertion polymerization, organic radical chemistry and reactivity of a M(IV)/M(III) redox couple. In the Sc case, CTS occurs via a σ-bond metathesis reactivity, and it is associated with a significant boost of catalytic activity and/or with tuning of polystyrene molecular weight and tacticity. The mechanistic studies that led to the understanding of these chain transfer reactions are summarized, highlighting their relevance in olefin polymerization catalysis and beyond.
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8
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Ehm C, Vittoria A, Goryunov GP, Izmer VV, Kononovich DS, Kulyabin PS, Di Girolamo R, Budzelaar PHM, Voskoboynikov AZ, Busico V, Uborsky DV, Cipullo R. A Systematic Study of the Temperature-Induced Performance Decline of ansa-Metallocenes for iPP. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01771] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Christian Ehm
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Antonio Vittoria
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Georgy P. Goryunov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
- DPI, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Vyatcheslav V. Izmer
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
- DPI, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Dmitry S. Kononovich
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
- DPI, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Pavel S. Kulyabin
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
- DPI, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Rocco Di Girolamo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Peter H. M. Budzelaar
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Alexander Z. Voskoboynikov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
- DPI, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Dmitry V. Uborsky
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
- DPI, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
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9
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Zhang J, Peng W, He A. Influence of alkylaluminium on the copolymerization of isoprene and butadiene with supported Ziegler-Natta catalyst. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122766] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Ehm C, Vittoria A, Goryunov GP, Izmer VV, Kononovich DS, Samsonov OV, Di Girolamo R, Budzelaar PHM, Voskoboynikov AZ, Busico V, Uborsky DV, Cipullo R. An Integrated High Throughput Experimentation/Predictive QSAR Modeling Approach to ansa-Zirconocene Catalysts for Isotactic Polypropylene. Polymers (Basel) 2020; 12:E1005. [PMID: 32349220 PMCID: PMC7284373 DOI: 10.3390/polym12051005] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 04/11/2020] [Accepted: 04/18/2020] [Indexed: 12/16/2022] Open
Abstract
Compared to heterogenous Ziegler-Natta systems (ZNS), ansa-metallocene catalysts for the industrial production of isotactic polypropylene feature a higher cost-to-performance balance. In particular, the C2-symmetric bis(indenyl) ansa-zirconocenes disclosed in the 1990s are complex to prepare, less stereo- and/or regioselective than ZNS, and lose performance at practical application temperatures. The golden era of these complexes, though, was before High Throughput Experimentation (HTE) could contribute significantly to their evolution. Herein, we illustrate a Quantitative Structure - Activity Relationship (QSAR) model trained on a robust and highly accurate HTE database. The clear-box QSAR model utilizes, in particular, a limited number of chemically intuitive 3D geometric descriptors that screen various regions of space in and around the catalytic pocket in a modular way thus enabling to quantify individual substituent contributions. The main focus of the paper is on the methodology, which should be of rather broad applicability in molecular organometallic catalysis. Then again, it is worth emphasizing that the specific application reported here led us to identify in a comparatively short time novel zirconocene catalysts rivaling or even outperforming all previous homologues which strongly indicates that the metallocene story is not over yet.
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Affiliation(s)
- Christian Ehm
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy; (A.V.); (R.D.G.); (P.H.M.B.); (V.B.)
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Antonio Vittoria
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy; (A.V.); (R.D.G.); (P.H.M.B.); (V.B.)
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Georgy P. Goryunov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia; (G.P.G.); (V.V.I.); (D.S.K.); (O.V.S.); (A.Z.V.)
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Vyatcheslav V. Izmer
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia; (G.P.G.); (V.V.I.); (D.S.K.); (O.V.S.); (A.Z.V.)
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Dmitry S. Kononovich
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia; (G.P.G.); (V.V.I.); (D.S.K.); (O.V.S.); (A.Z.V.)
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Oleg V. Samsonov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia; (G.P.G.); (V.V.I.); (D.S.K.); (O.V.S.); (A.Z.V.)
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Rocco Di Girolamo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy; (A.V.); (R.D.G.); (P.H.M.B.); (V.B.)
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Peter H. M. Budzelaar
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy; (A.V.); (R.D.G.); (P.H.M.B.); (V.B.)
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Alexander Z. Voskoboynikov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia; (G.P.G.); (V.V.I.); (D.S.K.); (O.V.S.); (A.Z.V.)
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy; (A.V.); (R.D.G.); (P.H.M.B.); (V.B.)
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Dmitry V. Uborsky
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia; (G.P.G.); (V.V.I.); (D.S.K.); (O.V.S.); (A.Z.V.)
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy; (A.V.); (R.D.G.); (P.H.M.B.); (V.B.)
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
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11
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Lin F, Liu Z, Wang M, Liu B, Li S, Cui D. Chain Transfer to Toluene in Styrene Coordination Polymerization. Angew Chem Int Ed Engl 2020; 59:4324-4328. [PMID: 31916646 DOI: 10.1002/anie.201914603] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 01/02/2020] [Indexed: 11/09/2022]
Abstract
The chain-transfer reaction is rather important in coordination polymerization regarding catalytic efficiency, adjustment of molecular weight, and control of chain structure. To date, chain transfer to H2 and Al, Mg, and Zn alkyl compounds and β-H elimination are the commonly encountered modes. Now a novel chain transfer to toluene is reported. By introducing fluorine atoms into the β-diketimine ligands, an inert catalytic system for styrene (St) coordination polymerization was transferred into the highly active one. The activity increased with an increase in the number of fluorines in the ligands. Surprisingly, the molecular weights of resultant polystyrenes are very low (Mn =2000-6600 Da) despite of St loadings, corresponding up to 121 chains per active species. The mechanisms were investigated by DFT simulation, MALDI-TOF MS, isotope tracing experiment and 2D NMR spectrum analyses, which revealed that the fluorine activated the polymerization and directed chain transfer to toluene.
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Affiliation(s)
- Fei Lin
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.,University of Chinese Academy of Sciences, Changchun Branch, Changchun, 130022, China.,University of Science and Technology of China, Hefei, Anhui, China
| | - Zhaohe Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.,University of Chinese Academy of Sciences, Changchun Branch, Changchun, 130022, China.,University of Science and Technology of China, Hefei, Anhui, China
| | - Meiyan Wang
- Institute of Theoretical Chemistry, Jilin University, Changchun, China
| | - Bo Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Shihui Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.,University of Chinese Academy of Sciences, Changchun Branch, Changchun, 130022, China.,University of Science and Technology of China, Hefei, Anhui, China
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12
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Lin F, Liu Z, Wang M, Liu B, Li S, Cui D. Chain Transfer to Toluene in Styrene Coordination Polymerization. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Fei Lin
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 China
- University of Chinese Academy of Sciences Changchun Branch Changchun 130022 China
- University of Science and Technology of China Hefei Anhui China
| | - Zhaohe Liu
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 China
- University of Chinese Academy of Sciences Changchun Branch Changchun 130022 China
- University of Science and Technology of China Hefei Anhui China
| | - Meiyan Wang
- Institute of Theoretical ChemistryJilin University Changchun China
| | - Bo Liu
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 China
| | - Shihui Li
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 China
- University of Chinese Academy of Sciences Changchun Branch Changchun 130022 China
- University of Science and Technology of China Hefei Anhui China
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13
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Liu Z, Yao C, Wu C, Zhao Z, Cui D. Additive-Triggered Chain Transfer to a Solvent in Coordination Polymerization. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02495] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhaohe Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Changguang Yao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Chunji Wu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Zhongfu Zhao
- Department of Polymer Science & Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
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14
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Uborsky DV, Mladentsev DY, Guzeev BA, Borisov IS, Vittoria A, Ehm C, Cipullo R, Hendriksen C, Friederichs N, Busico V, Voskoboynikov AZ. C1-Symmetric Si-bridged (2-indenyl)(1-indenyl) ansa-metallocenes as efficient ethene/1-hexene copolymerization catalysts. Dalton Trans 2020; 49:3015-3025. [DOI: 10.1039/c9dt04896k] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Synthesis, ethene/1-hexene copolymerization screening, and QSAR study of 28 silicon bridged (2-indenyl)(1-indenyl) zirconocenes: new promising catalysts for LLDPE were identified.
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Affiliation(s)
- Dmitry V. Uborsky
- Department of Chemistry
- Lomonosov Moscow State University
- 119991 Moscow
- Russia
| | | | - Bogdan A. Guzeev
- Department of Chemistry
- Lomonosov Moscow State University
- 119991 Moscow
- Russia
| | - Ilya S. Borisov
- Department of Chemistry
- Lomonosov Moscow State University
- 119991 Moscow
- Russia
| | - Antonio Vittoria
- Dipartimento di Scienze Chimiche
- Università di Napoli Federico II
- 80126 Napoli
- Italy
| | - Christian Ehm
- Dipartimento di Scienze Chimiche
- Università di Napoli Federico II
- 80126 Napoli
- Italy
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche
- Università di Napoli Federico II
- 80126 Napoli
- Italy
| | - Coen Hendriksen
- SABIC
- Technology and Innovation Department
- 6167 RD Geleen
- The Netherlands
| | - Nic Friederichs
- SABIC
- Technology and Innovation Department
- 6167 RD Geleen
- The Netherlands
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche
- Università di Napoli Federico II
- 80126 Napoli
- Italy
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15
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Ehm C, Vittoria A, Goryunov GP, Izmer VV, Kononovich DS, Samsonov OV, Budzelaar PHM, Voskoboynikov AZ, Busico V, Uborsky DV, Cipullo R. On the limits of tuning comonomer affinity of ‘Spaleck-type’ ansa-zirconocenes in ethene/1-hexene copolymerization: a high-throughput experimentation/QSAR approach. Dalton Trans 2020; 49:10162-10172. [DOI: 10.1039/d0dt01967d] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A change in rate-limiting step imparts a natural limit for comonomer affinity of C2-symmetric zirconocenes.
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16
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Zaccaria F, Sian L, Zuccaccia C, Macchioni A. Ion pairing in transition metal catalyzed olefin polymerization. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2020. [DOI: 10.1016/bs.adomc.2019.08.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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17
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Zaccaria F, Zuccaccia C, Cipullo R, Budzelaar PHM, Macchioni A, Busico V, Ehm C. On the Nature of the Lewis Acidic Sites in “TMA‐Free” Phenol‐Modified Methylaluminoxane. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201901035] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Francesco Zaccaria
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cintia 80126 Napoli Italy
- Dipartimento di Chimica Biologia e Biotecnologie and CIRCC Università di Perugia Via Elce di Sotto 8 06123 Perugia Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica Biologia e Biotecnologie and CIRCC Università di Perugia Via Elce di Sotto 8 06123 Perugia Italy
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cintia 80126 Napoli Italy
| | - Peter H. M. Budzelaar
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cintia 80126 Napoli Italy
| | - Alceo Macchioni
- Dipartimento di Chimica Biologia e Biotecnologie and CIRCC Università di Perugia Via Elce di Sotto 8 06123 Perugia Italy
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cintia 80126 Napoli Italy
| | - Christian Ehm
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cintia 80126 Napoli Italy
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18
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Zaccaria F, Zuccaccia C, Cipullo R, Budzelaar PHM, Macchioni A, Busico V, Ehm C. BHT-Modified MAO: Cage Size Estimation, Chemical Counting of Strongly Acidic Al Sites, and Activation of a Ti-Phosphinimide Precatalyst. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00076] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Francesco Zaccaria
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Peter H. M. Budzelaar
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Alceo Macchioni
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Christian Ehm
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
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19
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Zaccaria F, Zuccaccia C, Cipullo R, Budzelaar PHM, Macchioni A, Busico V, Ehm C. Toluene and α-Olefins as Radical Scavengers: Direct NMR Evidence for Homolytic Chain Transfer Mechanism Leading to Benzyl and “Dormant” Titanium Allyl Complexes. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00755] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Francesco Zaccaria
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Peter H. M. Budzelaar
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Alceo Macchioni
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Christian Ehm
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
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20
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Ehm C, Vittoria A, Goryunov GP, Kulyabin PS, Budzelaar PHM, Voskoboynikov AZ, Busico V, Uborsky DV, Cipullo R. Connection of Stereoselectivity, Regioselectivity, and Molecular Weight Capability in rac-R′2Si(2-Me-4-R-indenyl)2ZrCl2 Type Catalysts. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01546] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Christian Ehm
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O. Box 902, 5600 AX Eindhoven, the Netherlands
| | - Antonio Vittoria
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O. Box 902, 5600 AX Eindhoven, the Netherlands
| | - Georgy P. Goryunov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
- DPI, P.O. Box 902, 5600 AX Eindhoven, the Netherlands
| | - Pavel S. Kulyabin
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
- DPI, P.O. Box 902, 5600 AX Eindhoven, the Netherlands
| | - Peter H. M. Budzelaar
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O. Box 902, 5600 AX Eindhoven, the Netherlands
| | - Alexander Z. Voskoboynikov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
- DPI, P.O. Box 902, 5600 AX Eindhoven, the Netherlands
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O. Box 902, 5600 AX Eindhoven, the Netherlands
| | - Dmitry V. Uborsky
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, 119991 Moscow, Russia
- DPI, P.O. Box 902, 5600 AX Eindhoven, the Netherlands
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- DPI, P.O. Box 902, 5600 AX Eindhoven, the Netherlands
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21
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Bahri-Laleh N, Hanifpour A, Mirmohammadi SA, Poater A, Nekoomanesh-Haghighi M, Talarico G, Cavallo L. Computational modeling of heterogeneous Ziegler-Natta catalysts for olefins polymerization. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2018.06.005] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Zaccaria F, Ehm C, Budzelaar PHM, Busico V, Cipullo R. Catalyst Mileage in Olefin Polymerization: The Peculiar Role of Toluene. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00393] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Francesco Zaccaria
- Università di Napoli Federico II, Dipartimento di Scienze Chimiche, Via Cintia, 80126 Napoli, Italy
| | - Christian Ehm
- Università di Napoli Federico II, Dipartimento di Scienze Chimiche, Via Cintia, 80126 Napoli, Italy
| | - Peter H. M. Budzelaar
- Università di Napoli Federico II, Dipartimento di Scienze Chimiche, Via Cintia, 80126 Napoli, Italy
| | - Vincenzo Busico
- Università di Napoli Federico II, Dipartimento di Scienze Chimiche, Via Cintia, 80126 Napoli, Italy
| | - Roberta Cipullo
- Università di Napoli Federico II, Dipartimento di Scienze Chimiche, Via Cintia, 80126 Napoli, Italy
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23
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Zaccaria F, Vittoria A, Correa A, Ehm C, Budzelaar PHM, Busico V, Cipullo R. Internal Donors in Ziegler-Natta Systems: is Reduction by AlR3
a Requirement for Donor Clean-Up? ChemCatChem 2018. [DOI: 10.1002/cctc.201701422] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Francesco Zaccaria
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II; Via Cintia 80126 Napoli Italy
| | - Antonio Vittoria
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II; Via Cintia 80126 Napoli Italy
| | - Andrea Correa
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II; Via Cintia 80126 Napoli Italy
| | - Christian Ehm
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II; Via Cintia 80126 Napoli Italy
| | - Peter H. M. Budzelaar
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II; Via Cintia 80126 Napoli Italy
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II; Via Cintia 80126 Napoli Italy
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II; Via Cintia 80126 Napoli Italy
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Ehm C, Budzelaar PHM, Busico V. Tuning the Relative Energies of Propagation and Chain Termination Barriers in Polyolefin Catalysis through Electronic and Steric Effects. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700398] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Christian Ehm
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cinthia 80126 Napoli Italy
| | - Peter H. M. Budzelaar
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cinthia 80126 Napoli Italy
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cinthia 80126 Napoli Italy
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25
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Zaccaria F, Cipullo R, Budzelaar PHM, Busico V, Ehm C. Backbone rearrangement during olefin capture as the rate limiting step in molecular olefin polymerization catalysis and its effect on comonomer affinity. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28685] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Francesco Zaccaria
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II; Napoli 80126 Italy
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II; Napoli 80126 Italy
| | - Peter H. M. Budzelaar
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II; Napoli 80126 Italy
- Department of Chemistry; University of Manitoba; Winnipeg Manitoba Canada R3T 2N2
| | - Vincenzo Busico
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II; Napoli 80126 Italy
| | - Christian Ehm
- Dipartimento di Scienze Chimiche; Università di Napoli Federico II; Napoli 80126 Italy
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Ehm C, Budzelaar PH, Busico V. Metal–carbon bond strengths under polymerization conditions: 2,1-insertion as a catalyst stress test. J Catal 2017. [DOI: 10.1016/j.jcat.2017.04.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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Zaccaria F, Ehm C, Budzelaar PHM, Busico V. Accurate Prediction of Copolymerization Statistics in Molecular Olefin Polymerization Catalysis: The Role of Entropic, Electronic, and Steric Effects in Catalyst Comonomer Affinity. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03458] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Francesco Zaccaria
- Dipartimento di
Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Christian Ehm
- Dipartimento di
Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | | | - Vincenzo Busico
- Dipartimento di
Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
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