1
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Wei Y, Qu S, Li X, Chen J, Wen Z, Li Q, Wang W. Ammonium Tetrakis(pentafluorophenyl)borate: Preparation and Application in Olefin Coordination Polymerization as the Cocatalyst Compound. Polymers (Basel) 2024; 16:1689. [PMID: 38932039 PMCID: PMC11207295 DOI: 10.3390/polym16121689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 05/21/2024] [Accepted: 05/21/2024] [Indexed: 06/28/2024] Open
Abstract
Metallocene catalysts have attracted much attention from academia and industry for their excellent catalytic activity in the field of olefin polymerization. Cocatalysts play a key role in metallocene catalytic systems, which can not only affect the overall catalytic activity, but also have an obvious influence on the structure and properties of the polymer. Although methylaluminoxane (MAO) is currently the most widely used cocatalyst, its price increases the production cost of polyolefin materials. Ammonium tetrakis(pentafluorophenyl)borate has shown excellent performance in polymerization, being one of the best substitutes for the traditional cocatalyst MAO. Compared with the main catalyst, whose composition and structure are relatively complex, the research on cocatalyst is very limited. This review mainly introduces the research history, preparation methods, and application progress in polymerization of ammonium tetrakis(pentafluorophenyl)borate, deepening our understanding of the role of cocatalyst in polymerization, with the hope of inspiring brand-new thinking on improving and enhancing the overall performance of catalyst systems.
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Affiliation(s)
| | | | | | | | | | | | - Wei Wang
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., No. 14 Beisanhuan Donglu, Chao Yang District, Beijing 100013, China; (Y.W.); (S.Q.); (X.L.); (J.C.); (Z.W.); (Q.L.)
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2
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D'Anania O, De Rosa C, Talarico G. A Computational Evaluation of the Steric and Electronic Contributions in Stereoselective Olefin Polymerization with Pyridylamido-Type Catalysts. Molecules 2023; 28:molecules28093768. [PMID: 37175175 PMCID: PMC10180424 DOI: 10.3390/molecules28093768] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/21/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
A density functional theory (DFT) study combined with the steric maps of buried volume (%VBur) as molecular descriptors and an energy decomposition analysis through the ASM (activation strain model)-NEDA (natural energy decomposition analysis) approach were applied to investigate the origins of stereoselectivity for propene polymerization promoted by pyridylamido-type nonmetallocene systems. The relationships between the fine tuning of the ligand and the propene stereoregularity were rationalized (e.g., the metallacycle size, chemical nature of the bridge, and substituents at the ortho-position on the aniline moieties). The DFT calculations and %VBur steric maps reproduced the experimental trend: substituents on the bridge and on the ortho-positions of aniline fragments enhance the stereoselectivity. The ASM-NEDA analysis enabled the separation of the steric and electronic effects and revealed how subtle ligand modification may affect the stereoselectivity of the process.
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Affiliation(s)
- Olga D'Anania
- Scuola Superiore Meridionale, Largo San Marcellino, 80138 Napoli, Italy
| | - Claudio De Rosa
- Dipartimento di Scienze Chimiche, Università degli Studi di Napoli Federico II, 80124 Napoli, Italy
| | - Giovanni Talarico
- Dipartimento di Scienze Chimiche, Università degli Studi di Napoli Federico II, 80124 Napoli, Italy
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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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De Rosa C, Di Girolamo R, Muñoz-García AB, Pavone M, Talarico G. Breaking Symmetry Rules Enhance the Options for Stereoselective Propene Polymerization Catalysis. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00280] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Claudio De Rosa
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Rocco Di Girolamo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Ana B. Muñoz-García
- Dipartimento di Fisica “Ettore Pancini”, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Michele Pavone
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Giovanni Talarico
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
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5
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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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6
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Kulyabin PS, Uborsky DV, Voskoboynikov AZ, Canich JAM, Hagadorn JR. Pyridylamido hafnium complexes with a silylene bridge: synthesis and olefin polymerization. Dalton Trans 2020; 49:6693-6702. [DOI: 10.1039/d0dt01031f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Pyridylamido hafnium complexes with a silylene bridge were synthesized, characterized with X-ray crystal structure analysis and shown to polymerize 1-hexene and propene and copolymerize ethylene and 1-octene.
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Affiliation(s)
- Pavel S. Kulyabin
- Department of Chemistry
- M. V. Lomonosov Moscow State University
- Moscow 119991
- Russian Federation
| | - Dmitry V. Uborsky
- Department of Chemistry
- M. V. Lomonosov Moscow State University
- Moscow 119991
- Russian Federation
| | | | - Jo Ann M. Canich
- Baytown Technology and Engineering Complex
- ExxonMobil Chemical Company
- Baytown
- USA
| | - John R. Hagadorn
- Baytown Technology and Engineering Complex
- ExxonMobil Chemical Company
- Baytown
- USA
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7
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Ohta S, Takahashi S, Takenaka A, Akazawa Y, Miyamoto R, Okazaki M. Synthesis, Structures, and Solution Dynamics of Titanium and Zirconium Complexes Carrying a Bis(indolyl) and Two Diethylamido Ligands. Inorg Chem 2019; 58:15520-15528. [PMID: 31664824 DOI: 10.1021/acs.inorgchem.9b02566] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Indolyl is the anionic species obtained from the deprotonation of the N-H group of indole. Group 4 transition-metal complexes that carry indolyl-based polydentate ligands represent promising homogeneous catalysts for, e.g., olefin polymerization, hydroamination, and nitrogen-fixation reactions due to the weak π-donation and electron-withdrawing properties, as well as the low basicity of indolyl. In this study, we systematically investigated the synthesis and structures of titanium and zirconium complexes that carry deprotonated 2,2'-bis(indolyl)methane ligands (henceforth: bis(indolyl) ligands) and two diethylamido ligands. We found that the coordination geometry of the indolyl nitrogen atom in such bis(indolyl) ligands is affected by the steric impact of the substituents attached to the central aromatic ring. Moreover, we examined the dynamics of such bis(indolyl) ligands in solution for the corresponding zirconium complexes, and the mechanism was discussed in conjunction with DFT calculations. The results of this study suggest that bis(indolyl) ligands may also serve as coordinatively flexible ancillary ligands, and indicate the feasibility of an expansion from bis(indolyl) to bis(indolyl)-donor ligands.
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Affiliation(s)
- Shun Ohta
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology , Hirosaki University , Hirosaki 036-8561 , Japan
| | - Shiona Takahashi
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology , Hirosaki University , Hirosaki 036-8561 , Japan
| | - Amon Takenaka
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology , Hirosaki University , Hirosaki 036-8561 , Japan
| | - Yuta Akazawa
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology , Hirosaki University , Hirosaki 036-8561 , Japan
| | - Ryo Miyamoto
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology , Hirosaki University , Hirosaki 036-8561 , Japan
| | - Masaaki Okazaki
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology , Hirosaki University , Hirosaki 036-8561 , Japan
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8
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D'Auria I, D'Alterio MC, Tedesco C, Pellecchia C. Tailor-made block copolymers of l-, d- and rac-lactides and ε-caprolactone via one-pot sequential ring opening polymerization by pyridylamidozinc(ii) catalysts. RSC Adv 2019; 9:32771-32779. [PMID: 35529720 PMCID: PMC9073191 DOI: 10.1039/c9ra07133d] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 10/04/2019] [Indexed: 12/17/2022] Open
Abstract
Three-coordinated Zn(ii) complexes bearing sterically encumbered bidentate monoanionic [N,N -] pyridylamido ligands efficiently catalyze the ring opening polymerization of lactide (LA) and ε-caprolactone (CL). Owing to the polymerization controlled nature and high rate, precise stereodiblock poly(LLA-b-DLA) with different block lengths can be easily produced by one-pot sequential monomer addition at room temperature in short reaction times. NMR, SEC and DSC analyses confirm the production of highly isotactic diblock copolymers which crystallize in the high melting stereocomplex phase. Stereo-triblock and tetrablock copolymers of l-LA, d-LA and rac-LA have been synthesized similarly. Finally, a diblock poly(CL-b-LA) has been easily obtained by sequential addition of ε-caprolactone and lactide under mild conditions.
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Affiliation(s)
- Ilaria D'Auria
- Dipartimento di Chimica e Biologia "A. Zambelli", Università Degli Studi di Salerno Via Giovanni Paolo II 132 84084 Fisciano SA Italy
| | | | - Consiglia Tedesco
- Dipartimento di Chimica e Biologia "A. Zambelli", Università Degli Studi di Salerno Via Giovanni Paolo II 132 84084 Fisciano SA Italy
| | - Claudio Pellecchia
- Dipartimento di Chimica e Biologia "A. Zambelli", Università Degli Studi di Salerno Via Giovanni Paolo II 132 84084 Fisciano SA Italy
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9
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Sampson J, Choi G, Akhtar MN, Jaseer E, Theravalappil R, Garcia N, Agapie T. Early Metal Di(pyridyl) Pyrrolide Complexes with Second Coordination Sphere Arene-π Interactions: Ligand Binding and Ethylene Polymerization. ACS OMEGA 2019; 4:15879-15892. [PMID: 31592458 PMCID: PMC6776977 DOI: 10.1021/acsomega.9b01788] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 08/27/2019] [Indexed: 05/04/2023]
Abstract
Early metal complexes supported by hemilabile, monoanionic di(pyridyl) pyrrolide ligands substituted with mesityl and anthracenyl groups were synthesized to probe the possibility of second coordination sphere arene-π interactions with ligands with potential for allosteric control in coordination chemistry, substrate activation, and olefin polymerization. Yttrium alkyl, indolide, and amide complexes were prepared and structurally characterized; close contacts between the anthracenyl substituents and Y-bound ligands are observed in the solid state. Titanium, zirconium, and hafnium tris(dimethylamido) complexes were synthesized, and their ethylene polymerization activity was tested. In the solid state structure of one of the Ti tris(dimethylamido) complexes, coordination of Ti to only one of the pyridine donors is observed pointing to the hemilabile character of the di(pyridyl) pyrrolide ligands.
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Affiliation(s)
- Jessica Sampson
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, 1200 E California Blvd., Pasadena, California 91125, United States
| | - Gyeongshin Choi
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, 1200 E California Blvd., Pasadena, California 91125, United States
| | - Muhammed Naseem Akhtar
- Center
for Refining and Petrochemicals, King Fahd
University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - E.A. Jaseer
- Center
for Refining and Petrochemicals, King Fahd
University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Rajesh Theravalappil
- Center
for Refining and Petrochemicals, King Fahd
University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Nestor Garcia
- Center
for Refining and Petrochemicals, King Fahd
University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Theodor Agapie
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, 1200 E California Blvd., Pasadena, California 91125, United States
- E-mail:
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10
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Liu CC, Liu Q, Yiu SM, Chan MCW. Group 4 Post-Metallocenes Supported by [OCH2N,C(σ-aryl)] Auxiliaries Bearing a Seven-Membered Metallacycle: Synthesis, Characterization, and Catalysts for Olefin Polymerization. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00307] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cham-Chuen Liu
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Qian Liu
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Shek-Man Yiu
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Michael C. W. Chan
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
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11
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Liu C, Liu Q, Lo P, Lau K, Yiu S, Chan MCW. Olefin Polymerization Reactivity of Group 4 Post‐Metallocene Catalysts Bearing a Four‐Membered C(sp3)‐Donor Chelate Ring. ChemCatChem 2018. [DOI: 10.1002/cctc.201801008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Cham‐Chuen Liu
- Department of ChemistryCity University of Hong Kong Tat Chee Avenue, Kowloon Hong Kong
| | - Qian Liu
- Department of ChemistryCity University of Hong Kong Tat Chee Avenue, Kowloon Hong Kong
| | - Po‐Kam Lo
- Department of ChemistryCity University of Hong Kong Tat Chee Avenue, Kowloon Hong Kong
| | - Kai‐Chung Lau
- Department of ChemistryCity University of Hong Kong Tat Chee Avenue, Kowloon Hong Kong
| | - Shek‐Man Yiu
- Department of ChemistryCity University of Hong Kong Tat Chee Avenue, Kowloon Hong Kong
| | - Michael C. W. Chan
- Department of ChemistryCity University of Hong Kong Tat Chee Avenue, Kowloon Hong Kong
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12
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D’Auria I, D’Alterio MC, Talarico G, Pellecchia C. Alternating Copolymerization of CO2 and Cyclohexene Oxide by New Pyridylamidozinc(II) Catalysts. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01651] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ilaria D’Auria
- Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy
| | - Massimo Christian D’Alterio
- Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy
- Dipartimento di Scienze Chimiche, Università “Federico II” di Napoli, Complesso Monte Sant’Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Giovanni Talarico
- Dipartimento di Scienze Chimiche, Università “Federico II” di Napoli, Complesso Monte Sant’Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Claudio Pellecchia
- Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy
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13
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Ohta S, Shimbayashi M, Miyamoto R, Okazaki M. Synthesis and Structure of a Bis(indolyl)-Coordinated Titanium Diamido Complex, and Its Catalytic Applications in the Intermolecular Hydroamination of Alkynes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20180181] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shun Ohta
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori 036-8561, Japan
| | - Masaya Shimbayashi
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori 036-8561, Japan
| | - Ryo Miyamoto
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori 036-8561, Japan
| | - Masaaki Okazaki
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori 036-8561, Japan
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14
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Luconi L, Rossin A, Tuci G, Gafurov Z, Lyubov DM, Trifonov AA, Cicchi S, Ba H, Pham‐Huu C, Yakhvarov D, Giambastiani G. Benzoimidazole‐Pyridylamido Zirconium and Hafnium Alkyl Complexes as Homogeneous Catalysts for Tandem Carbon Dioxide Hydrosilylation to Methane. ChemCatChem 2018. [DOI: 10.1002/cctc.201800077] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lapo Luconi
- Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR Via Madonna del Piano, 10 50019 Sesto Fiorentino (Florence) Italy
| | - Andrea Rossin
- Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR Via Madonna del Piano, 10 50019 Sesto Fiorentino (Florence) Italy
| | - Giulia Tuci
- Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR Via Madonna del Piano, 10 50019 Sesto Fiorentino (Florence) Italy
- Department of Chemistry “Ugo Schiff”University of Florence 50019 Sesto Fiorentino Italy
| | - Zufar Gafurov
- A.E.Arbuzov Institute of Organic and Physical ChemistryRussian Academy of Sciences Arbuzov str. 8 420088 Kazan Russian Federation
- Kazan Federal University 420008 Kazan Russian Federation
| | - Dmitrii M. Lyubov
- G. A. Razuvaev Institute of Organometallic Chemistry of theRussian Academy of Sciences Tropinina 49, GSP-445 603950 Nizhny Novgorod Russia
| | - Alexander A. Trifonov
- G. A. Razuvaev Institute of Organometallic Chemistry of theRussian Academy of Sciences Tropinina 49, GSP-445 603950 Nizhny Novgorod Russia
| | - Stefano Cicchi
- Department of Chemistry “Ugo Schiff”University of Florence 50019 Sesto Fiorentino Italy
| | - Housseinou Ba
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES-CNRS)UMR 7515 CNRS-University of Strasbourg (UdS) France
| | - Cuong Pham‐Huu
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES-CNRS)UMR 7515 CNRS-University of Strasbourg (UdS) France
| | - Dmitry Yakhvarov
- A.E.Arbuzov Institute of Organic and Physical ChemistryRussian Academy of Sciences Arbuzov str. 8 420088 Kazan Russian Federation
- Kazan Federal University 420008 Kazan Russian Federation
| | - Giuliano Giambastiani
- Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR Via Madonna del Piano, 10 50019 Sesto Fiorentino (Florence) Italy
- Kazan Federal University 420008 Kazan Russian Federation
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15
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Zhang G, Wang S, Zhu X, Zhou S, Wei Y, Huang Z, Mu X. Synthesis and Characterization of Rare-Earth Metal Complexes Supported by 2-Imino or Amino Appended Indolyl Ligands with Diverse Hapticities: Tunable Selective Catalysis for Isoprene Polymerization. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00575] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Guangchao Zhang
- Laboratory
of Functional Molecular Solids, Ministry of Education, Anhui Laboratory
of Molecule-Based Materials (State Key Laboratory Cultivation Base),
College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, PR China
| | - Shaowu Wang
- Laboratory
of Functional Molecular Solids, Ministry of Education, Anhui Laboratory
of Molecule-Based Materials (State Key Laboratory Cultivation Base),
College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, PR China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, PR China
| | - Xiancui Zhu
- Laboratory
of Functional Molecular Solids, Ministry of Education, Anhui Laboratory
of Molecule-Based Materials (State Key Laboratory Cultivation Base),
College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, PR China
| | - Shuangliu Zhou
- Laboratory
of Functional Molecular Solids, Ministry of Education, Anhui Laboratory
of Molecule-Based Materials (State Key Laboratory Cultivation Base),
College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, PR China
| | - Yun Wei
- Laboratory
of Functional Molecular Solids, Ministry of Education, Anhui Laboratory
of Molecule-Based Materials (State Key Laboratory Cultivation Base),
College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, PR China
| | - Zeming Huang
- Laboratory
of Functional Molecular Solids, Ministry of Education, Anhui Laboratory
of Molecule-Based Materials (State Key Laboratory Cultivation Base),
College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, PR China
| | - Xiaolong Mu
- Laboratory
of Functional Molecular Solids, Ministry of Education, Anhui Laboratory
of Molecule-Based Materials (State Key Laboratory Cultivation Base),
College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, PR China
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16
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D'Auria I, Tedesco C, Mazzeo M, Pellecchia C. New homoleptic bis(pyrrolylpyridiylimino) Mg(ii) and Zn(ii) complexes as catalysts for the ring opening polymerization of cyclic esters via an "activated monomer" mechanism. Dalton Trans 2017; 46:12217-12225. [PMID: 28875186 DOI: 10.1039/c7dt02445b] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of MgBu2 and ZnEt2 or Zn{N[Si(CH3)3]2}2 with a tridentate monoanionic pyrrolylpyridiylimino [N-,N,N] proligand gave homoleptic species, as exclusive products, in high yields. The complexes were characterized in solution by 1D and 2D NMR analysis and by single crystal X-ray crystallography. The new homoleptic complexes were tested as initiators in the polymerization of ε-caprolactone and lactide in the presence of an exogenous alcohol. For both complexes, the polymerizations proceed via an "activated monomer" mechanism that, in the case of the magnesium complex, was correlated with the coordinative flexibility of the ligands, resulting in extremely high productivities under mild conditions.
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Affiliation(s)
- Ilaria D'Auria
- Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, via Giovanni Paolo II 132 - 84084, Fisciano, SA, Italy. and Consorzio Interuniversitario Reattività Chimica e Catalisi (CIRCC), via Celso Ulpiani 27 - 70126, Bari, Italy
| | - Consiglia Tedesco
- Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, via Giovanni Paolo II 132 - 84084, Fisciano, SA, Italy.
| | - Mina Mazzeo
- Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, via Giovanni Paolo II 132 - 84084, Fisciano, SA, Italy. and Consorzio Interuniversitario Reattività Chimica e 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. and Consorzio Interuniversitario Reattività Chimica e Catalisi (CIRCC), via Celso Ulpiani 27 - 70126, Bari, Italy
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17
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Motolko KSA, Price JS, Emslie DJH, Jenkins HA, Britten JF. Zirconium Complexes of a Rigid, Dianionic Pincer Ligand: Alkyl Cations, Arene Coordination, and Ethylene Polymerization. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00424] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kelly S. A. Motolko
- Department of Chemistry
and
Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Jeffrey S. Price
- Department of Chemistry
and
Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - David J. H. Emslie
- Department of Chemistry
and
Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Hilary A. Jenkins
- Department of Chemistry
and
Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - James F. Britten
- Department of Chemistry
and
Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
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18
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Guo L, Wang S, Wei Y, Zhou S, Zhu X, Mu X. Reactivity of 1,3-Disubstituted Indoles with Lithium Compounds: Substituents and Solvents Effects on Coordination and Reactivity of Resulting 1,3-Disubstituted-2-Indolyl Lithium Complexes. Inorg Chem 2017; 56:6197-6207. [PMID: 28474884 DOI: 10.1021/acs.inorgchem.7b00179] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reactivity of 1,3-disubstituted indolyl compounds with lithium reagents was studied to reveal the substituents and solvent effects on coordination modes and reactivities resulting in different indolyl lithium complexes. Treatment of 1-alkyl-3-imino functionalized compounds 1-R-3-(R'N═CH)C8H5N [R = Bn, R' = Dipp (HL1); R = Bn, R' = tBu (HL2); R = CH3OCH2, R' = Dipp (HL3); Dipp = iPr2C6H3] with Me3SiCH2Li or nBuLi in hydrocarbon solvents (toluene or n-hexane) produced 1,3-disubstituted-2-indolyl lithium complexes [η1:(μ2-η1:η1)-1-Bn-3-(DippN═CH)C8H4NLi]2 (1), {[η1:(μ3-η1:η1:η1)-1-Bn-3-(tBuN═CH)C8H4N][η2:η1:(μ2-η1:η1)-1-Bn-3-(tBuN═CH)C8H4N][η1:(μ2-η1:η1)-1-Bn-3-(tBuN═CH)C8H4N]Li3} (2), and [η1:η1:(μ2-η1:η1)-1-CH3OCH2-3-(DippN═CH)C8H4NLi]2 (3), respectively. The bonding modes of the indolyl ligand were kept in 1 by coordination with donor solvent, affording [η1:(μ2-η1:η1)-1-Bn-3-(DippN═CH)C8H4NLi(THF)]2 (4). The trinuclear complex 2 was converted to dinuclear form with a change of bonding modes of the indolyl ligand by treatment of 2 with donor solvent THF, producing [η1:(μ2-η1:η1)-1-Bn-3-(tBuN═CH)C8H4NLi(THF)]2 (5). X-ray diffraction established that compounds 1, 3, 4, and 5 crystallized as dinuclear structures with the carbanionic sp2 carbon atoms of the indolyl ligands coordinated to lithium ions in a μ2-η1:η1 manner, while compound 2 crystallized as a trinuclear structure and the carbanionic atoms of the indolyl moieties coordinated to lithium ions in μ2-η1:η1 and μ3-η1:η1:η1 manners. When the lithiation reaction of HL1 with 1 equiv of nBuLi was carried out in THF, the monomeric lithium complex {η1:η1-1-Bn-3-(DippN═CH)-2-[1'-Bn-3'-(DippNCH)C8H5N]C8H4NLi(THF)} (6) having coupled indolyl moieties was obtained. The compound 6 can also be prepared by the reaction of 1 with 0.5 equiv of HL1 with a higher isolated yield. Accordingly, the lithium complexes [η1:η4-1-Bn-3-tBuN═CH-2-(1'-Bn-3'-tBuNCHC8H5N)C8H4NLi(L)] (L = THF, 7a; L = Et2O, 7b) with the coupled indolyl moieties in η4 mode were isolated by treatment of HL2 with 2 in THF or Et2O. All complexes were characterized by spectroscopic methods, and their structures were determined by X-ray diffraction study.
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Affiliation(s)
- Liping Guo
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China.,Department of Applied Chemistry and Environmental Engineering, Bengbu College , Bengbu, Anhui 233030, China
| | - Shaowu Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , Shanghai 200032, China
| | - Yun Wei
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China
| | - Shuangliu Zhou
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China
| | - Xiancui Zhu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China
| | - Xiaolong Mu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China
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Rocchigiani L, Busico V, Pastore A, Macchioni A. Comparative NMR Study on the Reactions of Hf(IV) Organometallic Complexes with Al/Zn Alkyls. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00088] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Luca Rocchigiani
- Dipartimento
di Chimica, Biologia e Biotecnologie and CIRCC, Università degli Studi di Perugia, Via Elce di sotto, 8, I-06123 Perugia, Italy
- Dutch Polymer Institute (DPI) P.O. Box
902, 5600 AX Eindhoven, The Netherlands
| | - Vincenzo Busico
- Dutch Polymer Institute (DPI) P.O. Box
902, 5600 AX Eindhoven, The Netherlands
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, I-80126 Napoli, Italy
| | - Antonello Pastore
- Dutch Polymer Institute (DPI) P.O. Box
902, 5600 AX Eindhoven, The Netherlands
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, I-80126 Napoli, Italy
| | - Alceo Macchioni
- Dipartimento
di Chimica, Biologia e Biotecnologie and CIRCC, Università degli Studi di Perugia, Via Elce di sotto, 8, I-06123 Perugia, Italy
- Dutch Polymer Institute (DPI) P.O. Box
902, 5600 AX Eindhoven, The Netherlands
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Gao Y, Mouat AR, Motta A, Macchioni A, Zuccaccia C, Delferro M, Marks TJ. Pyridylamido Bi-Hafnium Olefin Polymerization Catalysis: Conformationally Supported Hf···Hf Enchainment Cooperativity. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00788] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yanshan Gao
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Aidan R. Mouat
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Alessandro Motta
- Dipartimento
di Scienze Chimiche, Università di Roma “La Sapienza” and INSTM, UdR Roma, piazzale Aldo Moro 5, I-00185 Roma, Italy
| | - Alceo Macchioni
- Dipartimento
di Chimica, Biologia e Biotecnologie and CIRCC, Università degli Studi di Perugia, Via Elce di Sotto, 8-06123 Perugia, Italy
| | - Cristiano Zuccaccia
- Dipartimento
di Chimica, Biologia e Biotecnologie and CIRCC, Università degli Studi di Perugia, Via Elce di Sotto, 8-06123 Perugia, Italy
| | - Massimiliano Delferro
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Tobin J. Marks
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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21
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Liu CC, Chan MCW. Chelating σ-Aryl Post-Metallocenes: Probing Intramolecular [C-H···F-C] Interactions and Unusual Reaction Pathways. Acc Chem Res 2015; 48:1580-90. [PMID: 25993345 DOI: 10.1021/acs.accounts.5b00008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Our interest in chelating σ-aryl ancillary ligands was motivated by their potential to impart unusual reactivity, since we envisioned that σ-donors with minimal π-donation would create a catalytic center with enhanced electrophilicity. We developed a family of Group 4 post-metallocene catalysts supported by pyridine-2-phenolate-6-(σ-aryl) [O,N,C] ligands bearing a fluorinated moiety in the vicinity of the metal. Notable features of these meta-substituted tris(hetero)aryl frameworks include their coordination geometry and inherent rigidity. For the first time, the elusive C-H···F-C interaction was manifested as NMR-discernible (1)H-(19)F coupling in solution and characterized by a neutron diffraction study. Their existence carries implications for catalyst design and in the context of weak attractive ligand-polymer interactions (WALPI), since they substantiate the practical viability of the ortho-F···H(β) ligand-polymer interactions proposed for living Group 4 fluorinated bis(phenoxyimine) catalysts. In metal-catalyzed olefin polymerization reactions, the notion of noncovalent interactions between an active ancillary ligand and the growing polymer chain is new. These interactions must be fragile and transient in nature, otherwise the intrinsic chain propagation process would be disrupted, and inherently tunable attractive forces such as hydrogen bonds are ideally suited to this role. The nature, relevance, and usability of extremely weak hydrogen bonds such as C-H···F-C has been a topical yet controversial area of research. We subsequently prepared a series of Group 4 complexes supported by fluorinated (σ-aryl)-2-phenolate-6-pyridyl [O,C,N] ligands. [(1)H,(19)F]-HMBC NMR experiments were conducted to probe the observed (1)H-(19)F coupling, and specifically separate contributions from scalar (J) coupling and cross-correlation (CR) interference. For the first time, a significant scalar component was confirmed for the (1)H-(19)F coupling in Ti-[O,C,N] and [O,N,C] complexes, which occurs with chemical connectivity across intramolecular C-H···F-C interactions. This result is important because the applicability of weak attractive ligand-polymer interactions in catalysis is feasible only if the observed coupling and hence the noncovalent interaction is genuine. The verified intramolecular C-H···F-C contacts in these complexes can therefore be considered as synthetic models for ligand-polymer interactions in olefin polymerization processes. Significantly, reports concerning late transition metal systems have appeared that hint at the generality of the WALPI concept for modulating polymerization reactions. We evaluated the olefin polymerization reactivity of Ti-[O,N,C] catalysts through judicious substitution. DFT calculations, which revealed diverse kinetically competitive reaction pathways and active sites (including unusual ethylene-assimilated species) in addition to normal chain propagation, were also employed to rationalize polymerization efficiencies. Further developments in catalytic applications of multidentate σ-aryl ligand systems and novel reactivity of the corresponding complexes can be envisaged.
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Affiliation(s)
- Cham-Chuen Liu
- Department of Biology and
Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Michael C. W. Chan
- Department of Biology and
Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
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22
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Rad'kov V, Roisnel T, Trifonov A, Carpentier JF, Kirillov E. Neutral and Cationic Alkyl and Amido Group 3 Metal Complexes of Amidine-Amidopyridinate Ligands: Synthesis, Structure, and Polymerization Catalytic Activity. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402362] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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