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Desgranges A, D'Agosto F, Boisson C. Rare-Earth Metallocenes for Polymerization of Olefins and Conjugated Dienes: From Fundamental Studies to Olefin Block Copolymers. Chempluschem 2024; 89:e202400262. [PMID: 38853764 DOI: 10.1002/cplu.202400262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/30/2024] [Accepted: 06/03/2024] [Indexed: 06/11/2024]
Abstract
The various steps in the mechanism of olefin polymerizations mediated by neutral rare-earth metallocene complexes are discussed. The complexes are either trivalent hydride and alkyl rare-earth compounds or divalent metallocenes that are activated by the monomer via an oxidation step. The stereospecific polymerizations of conjugated dienes based on the association of a cationic metallocene complex and an alkylaluminum and the polymerization mechanism based on monomer insertion into an aluminum-carbon bond are also discussed. The exploitation of metallocene complexes for the copolymerization of olefins with conjugated dienes is the subject of a third part of this review. The synthesis of new elastomers called ethylene butadiene rubber (EBR) is highlighted. Finally, the use of rare-earth metallocenes in macromolecular engineering is detailed. This includes the synthesis of functional polyolefins and block copolymers including thermoplastic elastomers.
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Affiliation(s)
- Ariane Desgranges
- CPE Lyon, CNRS, UMR 5128, Catalysis, Polymerization, Processes and Materials (CP2M), Universite Claude Bernard Lyon 1, 69616, Villeurbanne, France
- ChemistLab, Michelin CP2 M ICBMS joint Laboratory, 69616, Villeurbanne, France
- Manufacture des Pneumatiques Michelin, 23 place Carmes Déchaux, 63000, Clermont-Ferrand, France
| | - Franck D'Agosto
- CPE Lyon, CNRS, UMR 5128, Catalysis, Polymerization, Processes and Materials (CP2M), Universite Claude Bernard Lyon 1, 69616, Villeurbanne, France
- ChemistLab, Michelin CP2 M ICBMS joint Laboratory, 69616, Villeurbanne, France
| | - Christophe Boisson
- CPE Lyon, CNRS, UMR 5128, Catalysis, Polymerization, Processes and Materials (CP2M), Universite Claude Bernard Lyon 1, 69616, Villeurbanne, France
- ChemistLab, Michelin CP2 M ICBMS joint Laboratory, 69616, Villeurbanne, France
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2
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Cong X, Hao N, Mishra A, Zhuo Q, An K, Nishiura M, Hou Z. Regio- and Diastereoselective Annulation of α,β-Unsaturated Aldimines with Alkenes via Allylic C(sp 3)-H Activation by Rare-Earth Catalysts. J Am Chem Soc 2024; 146:10187-10198. [PMID: 38545960 DOI: 10.1021/jacs.4c02144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
The [3 + 2] or [4 + 2] annulation of α,β-unsaturated aldimines with alkenes via β'- or γ-allylic C(sp3)-H activation is, in principle, an atom-efficient route for the synthesis of five- or six-membered-ring cycloalkylamines, which are important structural motifs in numerous natural products, bioactive molecules, and pharmaceuticals. However, such a transformation has remained undeveloped to date probably due to the lack of suitable catalysts. We report herein for the first time the regio- and diastereoselective [3 + 2] and [4 + 2] annulations of α,β-unsaturated imines with alkenes via allylic C(sp3)-H activation by half-sandwich rare-earth catalysts having different metal ion sizes. The reaction of α-methyl-substituted α,β-unsaturated aldimines with alkenes by a C5Me4SiMe3-ligated scandium catalyst took place in a trans-diastereoselective [3 + 2] annulation fashion via C(sp3)-H activation at the α-methyl group (β'-position), exclusively affording alkylidene-functionalized cyclopentylamines with excellent trans-diastereoselectivity. In contrast, the reaction of β-methyl-substituted α,β-unsaturated aldimines with alkenes by a C5Me5-ligated cerium catalyst proceeded in a cis-diastereoselective [4 + 2] annulation fashion via γ-allylic C(sp3)-H activation, selectively yielding multisubstituted 2-cyclohexenylamines with excellent cis-diastereoselectivity. The mechanistic details of these transformations have been elucidated by deuterium-labeling experiments, kinetic isotope effect studies, and the isolation and transformations of key reaction intermediates. This work offers an efficient and selective protocol for the synthesis of a new family of cycloalkylamine derivatives, featuring 100% atom efficiency, high regio- and diastereoselectivity, broad substrate scope, and an unprecedented reaction mechanism.
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Affiliation(s)
- Xuefeng Cong
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Na Hao
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Aniket Mishra
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Qingde Zhuo
- Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Kun An
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Masayoshi Nishiura
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Zhaomin Hou
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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3
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Huang Z, Wang S, Zhu X, Wei Y, Yuan Q, Zhou S, Mu X, Wang H. Synthesis, Characterization of
Rare‐Earth
Metal Chlorides Bearing
Indolyl‐Based NCN
Pincer Ligand and Their Catalytic Activity toward 1,4‐
cis
Polymerization of Isoprene. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100539] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Zeming Huang
- 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
| | - 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
- Anhui Laboratory of Clean Catalytic Engineering, Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, College of Chemical and Environmental Engineering Anhui Polytechnic University Wuhu Anhui 241000 China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences Shanghai 200032 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
| | - 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
| | - Qingbing Yuan
- 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
| | - 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
| | - Hua 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
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4
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Chen XM, Huang LC, Gao W. One-pot synthesis of cobalt complexes with 2,6-bis(arylimino)phenoxyl/phenthioxyl ligands and catalysis on isoprene polymerization. Dalton Trans 2021; 50:5218-5225. [PMID: 33881099 DOI: 10.1039/d1dt00371b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Several cobalt complexes supported by 2,6-bis(arylimino)phenoxyl/phenthioxyl ligands κ2N,X-Ar[NXN]CoCl(THF) (1a, X = O, Ar = 2,6-Me2C6H3; 1b, X = O, Ar = 2,6-iPr2C6H3; 2a, X = S, Ar = 2,6-Me2C6H3; 2b, X = S, Ar = 2,6-iPr2C6H3) were synthesized by direct oxygen(sulfur) insertion into the C-Co bond of the mixed-valence cobalt complexes {κ2C,N,η6-Ar[NCN]Co-κN-CoCl(μ-Cl)}2. Crystallization of 1b in the presence of water gave the hydrolysis product 1b'. Treatment of Ar[NCN]Li with dioxygen followed by the addition of CoCl2 afforded the heteroatomic complexes {κ2N,O-Ar[NON]Co(μ-Cl)2Li}2 (3a, Ar = 2,6-Me2C6H3; 3b, Ar = 2,6-iPr2C6H3) or κ2N,O-Ar[NON]Co2Cl2(μ-Cl)2Li(THF)2 (4a, Ar = 2,6-Me2C6H3; 4b, Ar = 2,6-iPr2C6H3) depending on the amount of CoCl2 used. The Co(iii)/Li heterometallic complex 3b' with imino-phenoxyl-amino ligands was formed probably via a redox reaction of 3b. The reactions of Ar[NCN]Li with elemental sulfur and CoCl2 gave κ2N,S-Ar[NSN]Co2Cl2(μ-Cl)2Li(THF)2 (5a, Ar = 2,6-Me2C6H3; 5b, Ar = 2,6-iPr2C6H3) respectively. These complexes were well characterized by FT-IR and elemental analyses, and the molecular structures of 1b', 3b', 4a, and 4b were confirmed by X-ray crystallography. Upon activation with Al2Et3Cl3 in toluene, these complexes showed high activities in isoprene polymerization affording cis-1,4 enriched polymers with a moderate molecular weight (0.85-4.72 × 104 Da).
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Affiliation(s)
- Xue-Meng Chen
- College of Chemistry, Jilin University, Changchun 130012, China.
| | - Li-Cheng Huang
- College of Chemistry, Jilin University, Changchun 130012, China.
| | - Wei Gao
- College of Chemistry, Jilin University, Changchun 130012, China.
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5
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Neodymium monochloride and monoallyl complexes {2-[Ph2P(O)]C6H4NC(But)N(2,6-Me2C6H3)}2NdR (R = Cl, CH2CH=CH2) with the tridentate amidinate ligand in the catalysis of ring-opening polymerization of cyclic esters. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-2876-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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6
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Song T, Liu N, Tong X, Li F, Mu X, Mu Y. Half-sandwich rare-earth metal complexes bearing a C 5Me 4-C 6H 4-o-CH 2NMe 2 ligand: synthesis, characterization and catalytic properties for isoprene, 1-hexene and MMA polymerization. Dalton Trans 2019; 48:17840-17851. [PMID: 31777884 DOI: 10.1039/c9dt04029c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A new ortho-dimethylaminomethylphenyl-tetramethylcyclopentadienyl ligand C5Me4H-C6H4-o-CH2NMe2 (HL) and a series of rare-earth metal complexes bearing this ligand were synthesized. Of these complexes, two binuclear alkyl complexes [(C5Me4-C6H4-o-CH2N(Me)CH2-μ)Ln(CH2SiMe3)]2 (Ln = Sc (1a) and Y (1b)) were obtained from the alkane elimination reaction of the free ligand with Ln(CH2SiMe3)3(THF)2, followed by an intramolecular C-H activation process of a NMe group in the ligand with a CH2SiMe3 group, two binuclear dichloro complexes (C5Me4-C6H4-o-CH2NMe2)2Y2Cl4[LiCl(THF)2] (2a) and [(C5Me4-C6H4-o-CH2NMe2)LuCl(μ-Cl)]2 (2b) were synthesized by the reaction of anhydrous yttrium or lutetium trichloride with the lithium salt of the ligand LiL, and the binuclear bis(borohydrido) complexes [(C5Me4-C6H4-o-CH2NMe2)Ln(μ-BH4)BH4]2 (Ln = Sm (3a) and Nd (3b)) were synthesized by the reaction of Ln(BH4)3(THF)3 (Ln = Sm and Nd) with the lithium salt of the ligand. The molecular structures of all complexes 1a, 1b, 2a, 2b, 3a and 3b were determined by single-crystal X-ray crystallography. Upon activation with AlR3/Ph3CB(C6F5)4, MAO or MMAO, the binuclear alkyl complexes 1a and 1b show good catalytic activity for isoprene cis-1,4 enriched regioselective polymerization and moderate catalytic activity for 1-hexene polymerization. Complexes 3a and 3b were studied as catalysts for methyl methacrylate polymerization reaction under different conditions and were found to show moderate to high catalytic activity.
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Affiliation(s)
- Tingting Song
- The State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China.
| | - Ning Liu
- The State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China.
| | - Xiaobo Tong
- The State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China.
| | - Feng Li
- The State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China.
| | - Xiaoyue Mu
- The State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China.
| | - Ying Mu
- The State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China.
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7
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Hollfelder CO, Meermann-Zimmermann M, Spiridopoulos G, Werner D, Törnroos KW, Maichle-Mössmer C, Anwander R. C-H-Bond Activation and Isoprene Polymerization Studies Applying Pentamethylcyclopentadienyl-Supported Rare-Earth-Metal Bis(Tetramethylaluminate) and Dimethyl Complexes. Molecules 2019; 24:molecules24203703. [PMID: 31618971 PMCID: PMC6832758 DOI: 10.3390/molecules24203703] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 10/02/2019] [Accepted: 10/03/2019] [Indexed: 11/29/2022] Open
Abstract
As previously shown for lutetium and yttrium, 1,2,3,4,5-pentamethylcyclopentadienyl (C5Me5 = Cp*)-bearing rare-earth metal dimethyl half-sandwich complexes [Cp*LnMe2]3 are now also accessible for holmium, dysprosium, and terbium via tetramethylaluminato cleavage of [Cp*Ln(AlMe4)2] with diethyl ether (Ho, Dy) and tert-butyl methyl ether (TBME) (Tb). C–H-bond activation and ligand redistribution reactions are observed in case of terbium and are dominant for the next larger-sized gadolinium, as evidenced by the formation of mixed methyl/methylidene clusters [(Cp*Ln)5(CH2)(Me)8] and metallocene dimers [Cp*2Ln(AlMe4)]2 (Ln = Tb, Gd). Applying TBME as a “cleaving” reagent can result in both TBME deprotonation and ether cleavage, as shown for the formation of the 24-membered macrocycle [(Cp*Gd)2(Me)(CH2OtBu)2(AlMe4)]4 or monolanthanum complex [Cp*La(AlMe4){Me3Al(CH2)OtBu}] and monoyttrium complex [Cp*Y(AlMe4)(Me3AlOtBu)], respectively. Complexes [Cp*Ln(AlMe4)2] (Ln = Ho, Dy, Tb, Gd) and [Cp*LnMe2]3 (Ln = Ho, Dy) are applied in isoprene and 1,3-butadiene polymerization, upon activation with borates [Ph3C][B(C6F5)4] and [PhNHMe2][B(C6F5)4], as well as borane B(C6F5)3. The trans-directing effect of AlMe3 in the binary systems [Cp*Ln(AlMe4)2]/borate is revealed and further corroborated by the fabrication of high-cis-1,4 polybutadiene (97%) with “aluminum-free” [Cp*DyMe2]3/[Ph3C][B(C6F5)4]. The formation of multimetallic active species is supported by the polymerization activity of pre-isolated cluster [(Cp*Ho)3Me4(CH2)(thf)2].
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Affiliation(s)
| | - Melanie Meermann-Zimmermann
- Institute of Inorganic Chemistry, University of Tübingen, D-72076 Tübingen, Germany.
- Department of Chemistry, University of Bergen, N-5007 Bergen, Norway.
| | | | - Daniel Werner
- Institute of Inorganic Chemistry, University of Tübingen, D-72076 Tübingen, Germany.
| | - Karl W Törnroos
- Department of Chemistry, University of Bergen, N-5007 Bergen, Norway.
| | | | - Reiner Anwander
- Institute of Inorganic Chemistry, University of Tübingen, D-72076 Tübingen, Germany.
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8
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Diether D, Maichle-Mössmer C, Anwander R. Implications of Indenyl Substitution for the Structural Chemistry of Rare-Earth Metal (Half-)Sandwich Complexes and Performance in Living Isoprene Polymerization. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00344] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Dominic Diether
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Cäcilia Maichle-Mössmer
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Reiner Anwander
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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9
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Hollfelder CO, Jende LN, Dietrich H, Eichele K, Maichle‐Mössmer C, Anwander R. 1,3‐Diene Polymerization Promoted by Half‐Sandwich Rare‐Earth‐Metal Dimethyl Complexes: Active Species Clustering and Cationization/Deactivation Processes. Chemistry 2019; 25:7298-7302. [PMID: 30945775 DOI: 10.1002/chem.201901269] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Christoph O. Hollfelder
- Institut für Anorganische Chemie, Eberhard-Karls-Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Lars N. Jende
- Institut für Anorganische Chemie, Eberhard-Karls-Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Hans‐Martin Dietrich
- Institut für Anorganische Chemie, Eberhard-Karls-Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Klaus Eichele
- Institut für Anorganische Chemie, Eberhard-Karls-Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Cäcilia Maichle‐Mössmer
- Institut für Anorganische Chemie, Eberhard-Karls-Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Reiner Anwander
- Institut für Anorganische Chemie, Eberhard-Karls-Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
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10
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Barisic D, Buschmann DA, Schneider D, Maichle‐Mössmer C, Anwander R. Rare‐Earth‐Metal Pentadienyl Half‐Sandwich and Sandwich Tetramethylaluminates–Synthesis, Structure, Reactivity, and Performance in Isoprene Polymerization. Chemistry 2019; 25:4821-4832. [PMID: 30714644 DOI: 10.1002/chem.201900108] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Damir Barisic
- Institut für Anorganische Chemie Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Dennis A. Buschmann
- Institut für Anorganische Chemie Auf der Morgenstelle 18 72076 Tübingen Germany
| | - David Schneider
- Institut für Anorganische Chemie Auf der Morgenstelle 18 72076 Tübingen Germany
| | | | - Reiner Anwander
- Institut für Anorganische Chemie Auf der Morgenstelle 18 72076 Tübingen Germany
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11
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12
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Recent Advances in Rare Earth Complexes Bearing Allyl Ligands and Their Reactivity towards Conjugated Dienes and Styrene Polymerization. Catalysts 2017. [DOI: 10.3390/catal7120378] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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13
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Diether D, Tyulyunov K, Maichle-Mössmer C, Anwander R. Fluorenyl Half-Sandwich Bis(tetramethylaluminate) Complexes of the Rare-Earth Metals: Synthesis, Structure, and Isoprene Polymerization. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00543] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Dominic Diether
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Konstantin Tyulyunov
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Cäcilia Maichle-Mössmer
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Reiner Anwander
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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14
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Chai Z, Wang Y, Tang M, Mu X, Hou J, Yang G. Chiral rare-earth metal complexes with a tridentate amido-fluorenyl ligand: Syntheses, structures and catalytic performance. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.06.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Chai Z, Chu J, Qi Y, Tang M, Hou J, Yang G. Half-sandwich chiral rare-earth metal complexes with linked tridentate amido-indenyl ligand: synthesis, characterization, and catalytic properties for intramolecular hydroamination. RSC Adv 2017. [DOI: 10.1039/c6ra26537e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel rare-earth metal complexes featuring a tridentate carbon-linked amido-indenyl ligand have been synthesized and used to catalyze the intramolecular olefin hydroamination.
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Affiliation(s)
- Zhuo Chai
- Key Laboratory of Functionalized Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials
- Institute of Organic Chemistry
- College of Chemistry and Materials Science
| | - Jiang Chu
- Key Laboratory of Functionalized Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials
- Institute of Organic Chemistry
- College of Chemistry and Materials Science
| | - Yunyi Qi
- Key Laboratory of Functionalized Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials
- Institute of Organic Chemistry
- College of Chemistry and Materials Science
| | - Mujun Tang
- Key Laboratory of Functionalized Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials
- Institute of Organic Chemistry
- College of Chemistry and Materials Science
| | - Jinsong Hou
- Key Laboratory of Functionalized Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials
- Institute of Organic Chemistry
- College of Chemistry and Materials Science
| | - Gaosheng Yang
- Key Laboratory of Functionalized Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials
- Institute of Organic Chemistry
- College of Chemistry and Materials Science
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16
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Zhang G, Deng B, Wang S, Wei Y, Zhou S, Zhu X, Huang Z, Mu X. Di and trinuclear rare-earth metal complexes supported by 3-amido appended indolyl ligands: synthesis, characterization and catalytic activity towards isoprene 1,4-cis polymerization. Dalton Trans 2016; 45:15445-15456. [PMID: 27604287 DOI: 10.1039/c6dt02922a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Different di and trinuclear rare-earth metal complexes supported by 3-amido appended indolyl ligands were synthesized and their catalytic activities towards isoprene polymerization were investigated. Treatment of [RE(CH2SiMe3)3(thf)2] with 1 equiv. of 3-(CyN[double bond, length as m-dash]CH)C8H5NH in toluene or in THF afforded dinuclear rare-earth metal alkyl complexes having indolyl ligands in different hapticities with central metals {[η2:η1-μ-η1-3-(CyNCH(CH2SiMe3))Ind]RE-(thf)(CH2SiMe3)}2 (Cy = cyclohexyl, Ind = Indolyl, RE = Yb (1), Er (2), Y (3)) or {[η1-μ-η1-3-(CyNCH(CH2SiMe3))Ind]RE-(thf)2(CH2SiMe3)}2 (RE = Yb (4), Er (5), Y (6), Gd (7)), respectively. These two series of dinuclear complexes could be transferred to each other easily by only changing the solvents in the process. Reaction of [Er(CH2SiMe3)3(thf)2] with 1 equiv. of 3-t-butylaminomethylindole 3-(tBuNHCH2)C8H5NH in THF afforded the unexpected trinuclear erbium alkyl complex [η2:η1-μ-η1-3-(tBuNCH2)Ind]4Er3(thf)5(CH2SiMe3) (8), which can also be prepared by reaction of 3 equiv. of [Er(CH2SiMe3)3(thf)2] with 4 equiv. of 3-(tBuNHCH2)C8H5NH in THF. Accordingly, complexes [η2:η1-μ-η1-3-(tBuNCH2)Ind]4RE3(thf)5(CH2SiMe3) (RE = Y (9), Dy (10)) were prepared by reactions of 3 equiv. of [RE(CH2SiMe3)3(thf)2] with 4 equiv. of 3-(tBuNHCH2)C8H5NH in THF. Reactions of [RE(CH2SiMe3)3(thf)2] with 1 equiv. of 3-t-butylaminomethylindole 3-(tBuNHCH2)C8H5NH in THF, followed by treatment with 1 equiv. of [(2,6-iPr2C6H3)N[double bond, length as m-dash]CHNH(C6H3iPr2-2,6)] afforded, after workup, the dinuclear rare-earth metal complexes [η1-μ-η1:η1-3-(tBuNCH2)Ind][η1-μ-η1:η3-3-(tBuNCH2)Ind]RE2(thf)[(η3-2,6-iPr2C6H3)NCHN(C6H3iPr2-2,6)]2(RE = Er (11), Y (12)) having the indolyl ligands bonded with the rare-earth metal in different ligations. All new complexes 1-12 were fully characterized by spectroscopic methods and elemental analyses, and their structures were determined by X-ray crystallographic analyses. It was found that, except for complexes 1, 4, 11 and 12, all complexes were highly efficient catalysts for selective isoprene polymerization (up to 99% 1,4-cis selectivity) with the cooperation of co-catalysts, and the trinuclear complexes displayed advantages over dinuclear complexes in terms of molecular weight of polymers.
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Affiliation(s)
- Guangchao Zhang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China.
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17
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Dettenrieder N, Dietrich HM, Maichle-Mössmer C, Anwander R. Yttrium Siloxide Complexes Bearing Terminal Methyl Ligands: Molecular Models for Ln−CH3Terminated Silica Surfaces. Chemistry 2016; 22:13189-200. [DOI: 10.1002/chem.201602424] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Nicole Dettenrieder
- Institute of Inorganic Chemistry; Eberhard Karls Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - H. Martin Dietrich
- Institute of Inorganic Chemistry; Eberhard Karls Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Cäcilia Maichle-Mössmer
- Institute of Inorganic Chemistry; Eberhard Karls Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Reiner Anwander
- Institute of Inorganic Chemistry; Eberhard Karls Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
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18
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Edelmann FT. Lanthanides and actinides: Annual survey of their organometallic chemistry covering the year 2015. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.04.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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19
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Li T, Zhang G, Guo J, Wang S, Leng X, Chen Y. Tris(pyrazolyl)methanide Complexes of Trivalent Rare-Earth Metals. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00166] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Tengfei Li
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Guangchao Zhang
- 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, People’s Republic of China
| | - Jingjing Guo
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of 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, People’s Republic of China
| | - Xuebing Leng
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Yaofeng Chen
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
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20
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Soller BS, Salzinger S, Rieger B. Rare Earth Metal-Mediated Precision Polymerization of Vinylphosphonates and Conjugated Nitrogen-Containing Vinyl Monomers. Chem Rev 2015; 116:1993-2022. [DOI: 10.1021/acs.chemrev.5b00313] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Benedikt S. Soller
- WACKER-Lehrstuhl
für Makromolekulare Chemie, Technische Universität München, Lichtenbergstraße 4, 85748 Garching bei München, Germany
| | - Stephan Salzinger
- Advanced Materials & Systems Research, BASF SE, GME/D-B001, 67056 Ludwigshafen am Rhein, Germany
| | - Bernhard Rieger
- WACKER-Lehrstuhl
für Makromolekulare Chemie, Technische Universität München, Lichtenbergstraße 4, 85748 Garching bei München, Germany
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21
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Catalytic Sigma-Bond Metathesis and the Polymerization of 1,3-Dienes by Rare-Earth Metal Complexes. STRUCTURE AND BONDING 2015. [DOI: 10.1007/430_2015_193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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22
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Schädle D, Schädle C, Schneider D, Maichle-Mössmer C, Anwander R. Versatile Ln2(μ-NR)2-Imide Platforms for Ligand Exchange and Isoprene Polymerization. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00589] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dorothea Schädle
- Department
of Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Christoph Schädle
- Department
of Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - David Schneider
- Department
of Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Cäcilia Maichle-Mössmer
- Department
of Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Reiner Anwander
- Department
of Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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23
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Gu X, Zhang L, Zhu X, Wang S, Zhou S, Wei Y, Zhang G, Mu X, Huang Z, Hong D, Zhang F. Synthesis of Bis(NHC)-Based CNC-Pincer Rare-Earth-Metal Amido Complexes and Their Application for the Hydrophosphination of Heterocumulenes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00628] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaoxia Gu
- 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, People’s Republic of China
| | - Lijun Zhang
- 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, People’s Republic of 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, People’s Republic of 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, People’s Republic of China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People’s Republic of 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, People’s Republic of 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, People’s Republic of China
| | - Guangchao Zhang
- 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, People’s Republic of 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, People’s Republic of China
| | - Zeming Huang
- 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, People’s Republic of China
| | - Dongjing Hong
- 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, People’s Republic of China
| | - Feng Zhang
- 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, People’s Republic of China
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24
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Fieser ME, Johnson CW, Bates JE, Ziller JW, Furche F, Evans WJ. Dinitrogen Reduction, Sulfur Reduction, and Isoprene Polymerization via Photochemical Activation of Trivalent Bis(cyclopentadienyl) Rare-Earth-Metal Allyl Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00613] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Megan E. Fieser
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Casey W. Johnson
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Jefferson E. Bates
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Joseph W. Ziller
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Filipp Furche
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - William J. Evans
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
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25
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Zhang M, Liang Z, Ling J, Ni X, Shen Z. Carbon bridged triphenolate lanthanide complexes: synthesis, characterization, DFT studies and catalytic activities for isoprene polymerization. Dalton Trans 2015; 44:11182-90. [DOI: 10.1039/c5dt01241d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Lanthanide complexes supported by carbon bridged triphenolate ligands were synthesized and theoretical calculations were carried out on a Lu complex.
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Affiliation(s)
- Min Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Zhenhua Liang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Jun Ling
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Xufeng Ni
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Zhiquan Shen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
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26
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Alnajrani MN, Mair FS. The behaviour of β-triketimine cobalt complexes in the polymerization of isoprene. RSC Adv 2015. [DOI: 10.1039/c5ra06792h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cobalt complexes of β-triketimines activated by Et2AlCl polymerize isoprene to give up to 80%cis-1,4 with 20% 3,4 polymer, at 35 °C.
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Affiliation(s)
- Mohammed N. Alnajrani
- Organic Materials Innovation Centre
- School of Chemistry
- The University of Manchester
- Manchester M13 9PL
- UK
| | - Francis S. Mair
- Organic Materials Innovation Centre
- School of Chemistry
- The University of Manchester
- Manchester M13 9PL
- UK
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