1
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Mortis A, Malzacher J, Maichle-Mössmer C, Anwander R. Reactivity of a Neutral Yttrium(III) Trimethyl Complex toward Brønsted and Lewis Acids. Chemistry 2024; 30:e202401687. [PMID: 38747419 DOI: 10.1002/chem.202401687] [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: 04/29/2024] [Indexed: 07/02/2024]
Abstract
The present study corroborates that the neutral tridentate N-ligand 1,4,7-trimethyl-triazacyclononane (Me3TACN) qualifies as a versatile platform to study selective ligand exchange with rare-earth-metal alkyl complexes, herein [(Me3TACN)YMe3]. Treatment with Brønsted-acidic bis(dimethylsilyl)amine, HN(SiHMe2)2, gave selectively the mono-exchanged heteroleptic complex [(Me3TACN)YMe2{N(SiHMe2)2}]. Depending on the molecular ratio employed, the reaction of [(Me3TACN)YMe3] with AlMe3 resulted in the isolation/crystallization of [(Me3TACN)YMe2(AlMe4)] [1 : 1] or ion-separated [(Me3TACN)YMe(AlMe4)][AlMe4] [1 : 2] and [(Me3TACN)YMe(AlMe4)][Al2Me7] [1 : 3]. Analogous reactions with the heavier group 13 methyls GaMe3 and InMe3 generated mixed methyl/tetramethylgallato complex [(Me3TACN)YMe2(GaMe4)] and ion-separated [{(Me3TACN)YMe2}2{μ-Me}][InMe4]. Finally, dimethylalane, HAlMe2, converted [(Me3TACN)YMe3] into heteroaluminate [(Me3TACN)Y(HAlMe3)3], representing an AlMe3-supported, molecular yttrium trihydride complex. All compounds were investigated by single crystal X-ray diffraction (SC-XRD), homo- and heteronuclear (13C, 27Al, 89Y, 115In) NMR as well as IR spectroscopies and elemental analyses.
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Affiliation(s)
- Alexandros Mortis
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany
| | - Jonas Malzacher
- 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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2
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Behrsing T, Blair VL, Jaroschik F, Deacon GB, Junk PC. Rare Earths-The Answer to Everything. Molecules 2024; 29:688. [PMID: 38338432 PMCID: PMC10856286 DOI: 10.3390/molecules29030688] [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: 01/10/2024] [Revised: 01/24/2024] [Accepted: 01/27/2024] [Indexed: 02/12/2024] Open
Abstract
Rare earths, scandium, yttrium, and the fifteen lanthanoids from lanthanum to lutetium, are classified as critical metals because of their ubiquity in daily life. They are present in magnets in cars, especially electric cars; green electricity generating systems and computers; in steel manufacturing; in glass and light emission materials especially for safety lighting and lasers; in exhaust emission catalysts and supports; catalysts in artificial rubber production; in agriculture and animal husbandry; in health and especially cancer diagnosis and treatment; and in a variety of materials and electronic products essential to modern living. They have the potential to replace toxic chromates for corrosion inhibition, in magnetic refrigeration, a variety of new materials, and their role in agriculture may expand. This review examines their role in sustainability, the environment, recycling, corrosion inhibition, crop production, animal feedstocks, catalysis, health, and materials, as well as considering future uses.
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Affiliation(s)
- Thomas Behrsing
- School of Chemistry, Monash University, Melbourne, VIC 3800, Australia; (T.B.); (V.L.B.); (G.B.D.)
| | - Victoria L. Blair
- School of Chemistry, Monash University, Melbourne, VIC 3800, Australia; (T.B.); (V.L.B.); (G.B.D.)
| | | | - Glen B. Deacon
- School of Chemistry, Monash University, Melbourne, VIC 3800, Australia; (T.B.); (V.L.B.); (G.B.D.)
| | - Peter C. Junk
- College of Science & Engineering, James Cook University, Townsville, QLD 4811, Australia
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3
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Mortis A, Maichle-Mössmer C, Anwander R. Mixed Methyl/Chlorido Yttrium(III) Complexes Supported by a Neutral Tridentate N-Donor Ligand. Organometallics 2023. [DOI: 10.1021/acs.organomet.2c00636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Affiliation(s)
- Alexandros Mortis
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - Cäcilia Maichle-Mössmer
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - Reiner Anwander
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
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4
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Moinet EC, Wolf BM, Tardif O, Maichle-Mössmer C, Anwander R. Divalent Lanthanide Tetraisobutylaluminates: Reactivity and Living Isoprene Polymerization. Angew Chem Int Ed Engl 2023; 62:e202219316. [PMID: 36786326 DOI: 10.1002/anie.202219316] [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: 12/30/2022] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 02/15/2023]
Abstract
Lanthanide (Ln) tetraisobutylaluminates constitute key components in commercial 1,3-diene polymerization catalysts, and likewise are the homogeneous rare-earth-metal catalysts of prime industrial importance. Discrete divalent rare-earth-metal complexes [Ln(AliBu4 )2 ] (Ln=Sm, Eu, Yb) reported here display the first structurally characterized homoleptic metal tetraisobutylaluminates. Treatment of [Ln(AliBu4 )2 ] with C2 Cl6 gives access to SmII /SmIII mixed-valence cluster [Sm6 Cl8 (AliBu4 )6 ] and the YbII cluster [Yb4 Cl4 (AliBu4 )4 ], respectively. Reaction with B(C6 F5 )3 leads to hydride abstraction and formation of arene-coordinated hydroborates such as [Sm{HB(C6 F5 )3 }2 (toluene)2 ]. Complexes [Ln(AliBu4 )2 ] engage in single-component isoprene polymerization, affording high cis-1,4 polyisoprenes with narrow molecular weight distributions. Binary [Yb(AliBu4 )2 ]/[HNPhMe2 ][B(C6 F5 )4 ] fabricates polyisoprene in a perfectly living manner. The catalytically active species are scrutinized by NMR spectroscopy.
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Affiliation(s)
- Eric C Moinet
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany
| | - Benjamin M Wolf
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany
| | - Olivier Tardif
- Bridgestone Corporation Ogawahigashi-cho, Kodaira-shi, Tokyo, 187-8531, Japan
| | - 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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5
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Zhang Z, Kang X, Jiang Y, Cai Z, Li S, Cui D. Access to Disentangled Ultrahigh Molecular Weight Polyethylene via a Binuclear Synergic Effect. Angew Chem Int Ed Engl 2023; 62:e202215582. [PMID: 36418237 DOI: 10.1002/anie.202215582] [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: 10/24/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 11/25/2022]
Abstract
Disentangled ultrahigh molecular weight polyethylene (dis-UHMWPE) has excellent processability but can be achieved under extreme conditions. Herein, we report ethylene polymerization with the binuclear half-sandwich scandium complexes C1-Sc2 and C2-Sc2 to afford UHMWPE. C1-Sc2 bearing a short linker shows higher activity and gives higher molecular weight PEs than C2-Sc2 containing a flexible spacer and the mononuclear Sc1 . Strikingly, all UHMWPEs isolated from C1-Sc2 under broad temperature range (25-120 °C) and wide ethylene pressures (2-13 bar) feature very low degree of entanglement as proved by rheological test, DSC annealing study and SEM. These dis-UHMWPEs are facilely mediated solid-state-process at 130 °C and their tensile strength and modulus reach up to 149.2 MPa and 1.5 GPa, respectively. DFT simulations reveal that the formation of dis-UHMWPE is attributed to the binuclear synergic effect and the agostic interaction between the active center and the growing chain.
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Affiliation(s)
- Zhen Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China.,Department of Materials Science and Engineering, Jilin University, 130022, Changchun, China
| | - Xiaohui Kang
- College of Pharmacy, Dalian Medical University, 116044, Dalian, China
| | - Yang Jiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, 230026, Hefei, China
| | - Zhongyi Cai
- Department of Materials Science and Engineering, Jilin University, 130022, Changchun, China
| | - Shihui Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, 230026, Hefei, China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, 230026, Hefei, China
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6
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Elius Hossain M, Guo Z, Wang J, Deacon GB, Junk PC. Synthesis and characterisation of η6-arene(halogenidoaluminato)lanthanoid(II) and alkaline earth(II) complexes. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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7
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Hossain ME, Guo Z, Wang J, Deacon G, Junk PC, Diether D, Anwander R. h6 ‐Arene(halogenidoaluminato)lanthanoid(III) complexes: Synthesis, characterization and catalytic activity for isoprene polymerization. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202101009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | | | - Jun Wang
- James Cook University Chemistry AUSTRALIA
| | | | - Peter Courtney Junk
- James Cook University Dept. of Chemistry James Cook Drive 4811 Townsville AUSTRALIA
| | - Dominic Diether
- University of Tübingen: Eberhard Karls Universitat Tubingen Chemistry GERMANY
| | - Reiner Anwander
- Eberhard Karls Universität Tübingen: Eberhard Karls Universitat Tubingen Chemistry GERMANY
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8
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Wang H, Cue JMO, Calubaquib EL, Kularatne RN, Taslimy S, Miller JT, Stefan MC. Neodymium catalysts for polymerization of dienes, vinyl monomers, and ε-caprolactone. Polym Chem 2021. [DOI: 10.1039/d1py01270c] [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
This review discusses various neodymium catalysts for stereospecific polymerization of dienes, vinyl monomers, and ε-caprolactone.
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Affiliation(s)
- Hanghang Wang
- The Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas, 75080, USA
| | - John Michael O. Cue
- The Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas, 75080, USA
| | - Erika L. Calubaquib
- The Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas, 75080, USA
| | - Ruvanthi N. Kularatne
- The Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas, 75080, USA
| | - Somayeh Taslimy
- The Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas, 75080, USA
| | - Justin T. Miller
- The Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas, 75080, USA
| | - Mihaela C. Stefan
- The Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas, 75080, USA
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9
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Dzhevakov PB, Topchiy MA, Ageshina AA, Minaeva LI, Rzhevskiy SA, Nechaev MS, Osipov SN, Asachenko AF. Comparative activity of yttrium(iii) pincer complexes in isoprene polymerization. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-3038-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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10
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Feng Z, Wang S, Wu Y, Li Q, Zhao X, Wang X, Wang S. cis-1,4-Polymerization of isoprene catalyzed by rare-earth metal amido complexes supported by 2-t-butylimino- or 2-amino-functionalized indolyl ligand. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.108195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Tanaka R, Nakayama Y, Shiono T. Effect of Ancillary Ligands as a Part of Counteranion in Neodymium-Catalyzed Isoprene Polymerization. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00112] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ryo Tanaka
- Department of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima, 739-8527 Japan
| | - Yuushou Nakayama
- Department of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima, 739-8527 Japan
| | - Takeshi Shiono
- Department of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima, 739-8527 Japan
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12
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Gan Q, Xu Y, Huang W, Luo W, Hu Z, Tang F, Jia X, Gong D. Utilization of bio‐sourced myrcene for efficient preparation of highly
cis
‐1,4 regular elastomer via a neodymium catalyzed copolymerization strategy. POLYM INT 2020. [DOI: 10.1002/pi.6011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Qiao Gan
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo P. R. China
| | - Yuechao Xu
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo P. R. China
| | - Weizhong Huang
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo P. R. China
| | - Wanwei Luo
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo P. R. China
| | - Zhonghan Hu
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo P. R. China
| | - Fuming Tang
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo P. R. China
| | - Xiaoyu Jia
- Key Laboratory of Urban Environment and HealthInstitute of Urban Environment, Chinese Academy of Sciences Xiamen P. R. China
- Ningbo Urban Environment Observation and Research Station – NUEORS, Chinese Academy of Sciences Ningbo P. R. China
| | - Dirong Gong
- Faculty of Materials Science and Chemical EngineeringNingbo University Ningbo P. R. China
- Key Laboratory of Urban Environment and HealthInstitute of Urban Environment, Chinese Academy of Sciences Xiamen P. R. China
- Ningbo Urban Environment Observation and Research Station – NUEORS, Chinese Academy of Sciences Ningbo P. R. China
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun P. R. China
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13
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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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14
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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: 11] [Impact Index Per Article: 2.2] [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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15
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Pan Y, Li W, Wei NN, So YM, Li Y, Jiang K, He G. Anilido-oxazoline-ligated rare-earth metal complexes: synthesis, characterization and highly cis-1,4-selective polymerization of isoprene. Dalton Trans 2019; 48:3583-3592. [PMID: 30681102 DOI: 10.1039/c8dt04647f] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Anilido-oxazoline-ligated rare-earth metal dialkyl complexes have been synthesized and structurally characterized. The complexes exhibited strong fluorescence emissions and good catalytic performance on isoprene polymerization with high cis-1,4-selectivity. The treatment of anilido-oxazoline precursors ortho-C6H4[NH(2,6-R12C6H3)][C[double bond, length as m-dash]NC(R2,R3)CH2O] (R1 = R2 = R3 = Me (HL1); R1 = iPr, R2 = R3 = Me (HL2); R1 = R2 = iPr, R3 = H (HL3); and R1 = iPr, R2 = R3 = H (HL4)) with an equimolar amount of Ln(CH2SiMe3)3(THF)2 (Ln = Sc, Y) afforded rare-earth metal complexes L1-4-Ln(CH2SiMe3)2(THF)n (L1-Sc (1), n = 1; L2-Sc (2), n = 0; L1-Y (3), n = 1; L2-Y (4), n = 1; L3-Y (5), n = 1; and L4-Y (6), n = 1) in good yields. The complexes are stable in both the solid state and solution. Single crystal X-ray diffraction study showed that complexes 1, 3 and 4 exhibit a distorted trigonal bipyramidal configuration, while complex 2 is pseudo-tetrahedral without coordinated THF. The luminescence properties of complexes 1-4 were investigated and the emission maxima were found in the range of 465-477 nm. DFT and TD-DFT studies were carried out to explore their characteristic electronic structures and gain insight into their optical properties. Upon activation with organic borates, the reported complexes exhibited high activity and cis-1,4-selectivity for isoprene polymerization. The nature of the central metal and substituent groups in oxazoline have an influence on the cis-1,4-selectivity.
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Affiliation(s)
- Yu Pan
- State Key Laboratory of Fine Chemicals, School of Petroleum and Chemical Engineering, Dalian University of Technology, Panjin 124221, China.
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16
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Li W, Zhao J, Zhang X, Gong D. Capability of PN3-type Cobalt Complexes toward Selective (Co-)Polymerization of Myrcene, Butadiene, and Isoprene: Access to Biosourced Polymers. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b05866] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wenxin Li
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, PR China
| | - Junyi Zhao
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, PR China
| | - Xuequan Zhang
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China
| | - Dirong Gong
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, PR China
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17
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Zhao M, Wang L, Mahmood Q, Jing C, Zhu G, Zhang X, Wang X, Wang Q. Controlled isoprene polymerization mediated by iminopyridine-iron (II) acetylacetonate pre-catalysts. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4836] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Mengmeng Zhao
- Key Laboratory of Biobased Materials; Qingdao Institute of Biomass Energy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266000 China
| | - Liang Wang
- Key Laboratory of Biobased Materials; Qingdao Institute of Biomass Energy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266000 China
| | - Qaiser Mahmood
- Key Laboratory of Biobased Materials; Qingdao Institute of Biomass Energy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266000 China
| | - Chuyang Jing
- Key Laboratory of Biobased Materials; Qingdao Institute of Biomass Energy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266000 China
- Center of Materials Science and Optoelectronics Engineering; University of Chinese Academy of Sciences; Beijing 100049 China
| | - Guangqian Zhu
- Key Laboratory of Biobased Materials; Qingdao Institute of Biomass Energy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266000 China
- Center of Materials Science and Optoelectronics Engineering; University of Chinese Academy of Sciences; Beijing 100049 China
| | - Xianhui Zhang
- Key Laboratory of Biobased Materials; Qingdao Institute of Biomass Energy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266000 China
- Center of Materials Science and Optoelectronics Engineering; University of Chinese Academy of Sciences; Beijing 100049 China
| | - Xiaowu Wang
- Key Laboratory of Biobased Materials; Qingdao Institute of Biomass Energy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266000 China
| | - Qinggang Wang
- Key Laboratory of Biobased Materials; Qingdao Institute of Biomass Energy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266000 China
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18
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Jia X, Li W, Zhao J, Yi F, Luo Y, Gong D. Dual Catalysis of the Selective Polymerization of Biosourced Myrcene and Methyl Methacrylate Promoted by Salicylaldiminato Cobalt(II) Complexes with a Pendant Donor. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00708] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Xiaoyu Jia
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, No.1799, Jimei Road, Xiamen, Fujian 361021, P. R. China
- Ningbo Urban Environment Observation and Research Station-NUEORS, Chinese Academy of Sciences, Ningbo, Zhejiang 315830, P. R. China
| | - Wenxin Li
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
| | - Junyi Zhao
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
| | - Feiyan Yi
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
| | - Yunjie Luo
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
| | - Dirong Gong
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
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19
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Schmidt BM, Pindwal A, Venkatesh A, Ellern A, Rossini AJ, Sadow AD. Zwitterionic Trivalent (Alkyl)lanthanide Complexes in Ziegler-Type Butadiene Polymerization. ACS Catal 2018. [DOI: 10.1021/acscatal.8b04025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bradley M. Schmidt
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
| | - Aradhana Pindwal
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
| | - Amrit Venkatesh
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
| | - Arkady Ellern
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
| | - Aaron J. Rossini
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
| | - Aaron D. Sadow
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
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20
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Bienfait AM, Wolf BM, Törnroos KW, Anwander R. Trivalent Rare-Earth-Metal Bis(trimethylsilyl)amide Halide Complexes by Targeted Oxidations. Inorg Chem 2018; 57:5204-5212. [DOI: 10.1021/acs.inorgchem.8b00240] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- André M. Bienfait
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Benjamin M. Wolf
- Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - Karl W. Törnroos
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Reiner Anwander
- Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
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21
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Zhao J, Chen H, Li W, Jia X, Zhang X, Gong D. Polymerization of Isoprene Promoted by Aminophosphine(ory)-Fused Bipyridine Cobalt Complexes: Precise Control of Molecular Weight and cis-1,4-alt-3,4 Sequence. Inorg Chem 2018. [DOI: 10.1021/acs.inorgchem.8b00270] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Junyi Zhao
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
| | - Huafeng Chen
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
| | - Wenxin Li
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
| | - Xiaoyu Jia
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, No. 1799, Jimei Road, Xiamen, Fujian 361021, P. R. China
- Ningbo Urban Environment Observation and Research Station-NUEORS, Chinese Academy of Sciences, Ningbo, Zhejiang 315830, P. R. China
| | - Xuequan Zhang
- Key Laboratory of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
| | - Dirong Gong
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
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22
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Rong W, Wang M, Li S, Cheng J, Liu D, Cui D. Insights into the Formation Process of Yttrium–Aluminum Bimetallic Alkyl Complexes Supported by a Bulky Phosphazene Ligand. Organometallics 2018. [DOI: 10.1021/acs.organomet.7b00911] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Weifeng Rong
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- Shandong Institute of non-metallic materials, Jinan 250031, People’s Republic of China
| | - Meiyan Wang
- Institute of Theoretical Chemistry, Jilin University, Changchun 130012, People’s Republic of China
| | - Shihui Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Jianhua Cheng
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Dongtao Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
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23
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Le Roux E, Liang Y, Anwander R. Silica-Grafted Neodymium Catalysts for the Production of Ultrahigh-Molecular-Weight cis
-1,4-Polyisoprene. ChemCatChem 2018. [DOI: 10.1002/cctc.201701830] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Erwan Le Roux
- Kjemisk Institutt; Universitetet i Bergen; Allégaten 41 5007 Bergen Norway
| | - Yucang Liang
- 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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24
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1,3-Diene Polymerization Mediated by Homoleptic Tetramethylaluminates of the Rare-Earth Metals. Catalysts 2018. [DOI: 10.3390/catal8020061] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
During the past two decades homoleptic tetramethylaluminates of the trivalent rare-earth metals, Ln(AlMe4)3, have emerged as useful components for efficient catalyst design in the field of 1,3-diene polymerization. Previous work had focused on isoprene polymerization applying Ln(AlMe4)3 precatalysts with Ln = La, Ce, Pr, Nd, Gd and Y, in the presence of Et2AlCl as an activator. Polymerizations employing Ln(AlMe4)3 with Ln = La, Y and Nd along with borate/borane co-catalysts [Ph3C][B(C6F5)4], [PhNMe2H][B(C6F5)4] and [B(C6F5)3] were mainly investigated for reasons of comparison with ancillary ligand-supported systems (cf. half-sandwich complexes). The present study investigates into a total of eleven rare-earth elements, namely Ln = La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Y, Er and Lu. A full overview on the polymerization behavior of Ln(AlMe4)3 in the presence of perfluorinated borate/borane cocatalysts and R2AlCl-type activators (R = Me, Et) is provided, probing the monomers isoprene and 1,3-butadiene (and preliminary ethylene). Virtually complete cis-1,4-selectivities are obtained for several catalyst/cocatalyst combinations (e.g., Gd(AlMe4)3/Me2AlCl, >99.9%). Insights into the ‘black box’ of active species are obtained by indirect observations via screening of pre-reaction time and cocatalyst concentration. The microstructure of the polydienes is investigated by combined 1H/13C NMR and ATR-IR spectroscopies. Furthermore, the reaction of [LuMe6(Li(thf)x)3] with AlMe3 has been applied as a new strategy for the efficient synthesis of Lu(AlMe4)3. The solid-state structures of Gd(AlMe4)3 and Tb(AlMe4)3 are reported.
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25
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Zhou G, Kang X, Wang X, Hou Z, Luo Y. Theoretical Investigations of Isoprene Polymerization Catalyzed by Cationic Half-Sandwich Scandium Complexes Bearing a Coordinative Side Arm. Organometallics 2018. [DOI: 10.1021/acs.organomet.7b00876] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Guangli Zhou
- State
Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xiaohui Kang
- State
Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
- College
of Pharmacy, Dalian Medical University, Dalian, Liaoning 116044, China
| | - Xingbao Wang
- State
Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Zhaomin Hou
- State
Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
- Organometallic
Chemistry Laboratory and RIKEN Center for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yi Luo
- State
Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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26
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Yu C, Zhou D, Yan X, Gao F, Zhang L, Zhang S, Li X. Cis-1,4-Polymerization of Isoprene by 1,3-Bis(oxazolinymethylidene)isoindoline-Ligated Rare-Earth Metal Dialkyl Complexes. Polymers (Basel) 2017; 9:E531. [PMID: 30965837 PMCID: PMC6419008 DOI: 10.3390/polym9100531] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 10/17/2017] [Accepted: 10/18/2017] [Indexed: 12/23/2022] Open
Abstract
A series of novel chiral nonmetallocene pincer-type rare-earth metal dialkyl complexes bearing the chiral monoanionic tridentate C₂-symmetric 1,3-bis(oxazolinymethylidene)isoindoline (BOXMI-H) ligand (BOXMI)Ln(CH₂SiMe₃)₂ 1⁻3 (1: Ln = Sc, yield = 57%; 2: Ln = Lu, yield = 55%; 3: Ln = Y, yield = 62%) have been prepared in moderate yields via the acid-base reaction between the BOXMI ligand and rare-earth metal tri(trimethylsilylmethyl) complexes. The X-ray diffractions show that both of the complexes 1 and 2 contain one BOXMI ligand and two trimethylsilylmethyl ligands, adopting a distorted trigonal bipyramidal configuration. In the presence of a cocatalyst such as borate and AlR₃, these complexes 1⁻3 exhibit high activities of up to 6.8 × 10⁴ (g of polymer)/(molLn h) and high cis-1,4 selectivities of up to 97% in the polymerization of isoprene in toluene, yielding the cis-1,4-polyisoprenes with heavy molecular weights (Mn of up to 710,000 g/mol) and bimodal molecular weight distributions (Mw/Mn = 2.0⁻4.5).
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Affiliation(s)
- Chao Yu
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 10081, China.
| | - Dahai Zhou
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 10081, China.
| | - Xiangqian Yan
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 10081, China.
| | - Fei Gao
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 10081, China.
| | - Li Zhang
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 10081, China.
| | - Shaowen Zhang
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 10081, China.
| | - Xiaofang Li
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 10081, China.
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27
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Zhang P, Liao H, Wang H, Li X, Yang F, Zhang S. Cis-1,4-Polymerization of Isoprene Catalyzed by 1,3-Bis(2-pyridylimino)isoindoline-Ligated Rare-Earth-Metal Dialkyl Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00322] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pengfei Zhang
- School
of Chemistry and Chemical Engineering, Key Laboratory of Cluster Science
of Ministry of Education, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, People’s Republic of China
| | - Hongyun Liao
- School
of Chemistry and Chemical Engineering, Key Laboratory of Cluster Science
of Ministry of Education, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, People’s Republic of China
| | - Hanghang Wang
- School
of Chemistry and Chemical Engineering, Key Laboratory of Cluster Science
of Ministry of Education, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, People’s Republic of China
| | - Xiaofang Li
- School
of Chemistry and Chemical Engineering, Key Laboratory of Cluster Science
of Ministry of Education, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, People’s Republic of China
| | - Fanzhi Yang
- Advanced
Research Institute for Multidisciplinary Science, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, People’s Republic of China
| | - Shaowen Zhang
- School
of Chemistry and Chemical Engineering, Key Laboratory of Cluster Science
of Ministry of Education, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, People’s Republic of China
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28
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Yang F, Li X. Novel cationic rare earth metal alkyl catalysts for precise olefin polymerization. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28617] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Fanzhi Yang
- Advanced Research Institute for Multidisciplinary Science, Beijing Institute of Technology; Haidian Beijing 100081 China
| | - Xiaofang Li
- School of Chemistry and Chemical Engineering, Key Laboratory of Cluster Science of Ministry of Education; Beijing Institute of Technology; Haidian Beijing 100081 China
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29
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Chen H, Pan W, Huang KW, Zhang X, Gong D. Controlled polymerization of isoprene promoted by a type of hemilabile XPN3 (X = O, S) ligand supported cobalt(ii) complexes: the role of a hemilabile donor on the level of control. Polym Chem 2017. [DOI: 10.1039/c7py00252a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cobalt dichloride complexes (Co1–Co9) carrying a novel type of hemilabile donor PN3 (L1–L3) or XPN3 (L4–L6, X = O; L7–L9, X = S) are reported as precursors for controlled polymerization of isoprene.
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Affiliation(s)
- Huafeng Chen
- Faculty of Materials Science and Chemical Engineering
- Ningbo University
- Ningbo 315211
- P. R. China
| | - Weijing Pan
- Faculty of Materials Science and Chemical Engineering
- Ningbo University
- Ningbo 315211
- P. R. China
| | - Kuo-Wei Huang
- Division of Physical Sciences and Engineering and KAUST Catalysis Centre
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Saudi Arabia
| | - Xuequan Zhang
- Key Laboratory of Synthetic Rubber
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Dirong Gong
- Faculty of Materials Science and Chemical Engineering
- Ningbo University
- Ningbo 315211
- P. R. China
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30
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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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31
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Spallek T, Heß O, Meermann-Zimmermann M, Meermann C, Klimpel MG, Estler F, Schneider D, Scherer W, Tafipolsky M, Törnroos KW, Maichle-Mössmer C, Sirsch P, Anwander R. Synthesis and structural diversity of trivalent rare-earth metal diisopropylamide complexes. Dalton Trans 2016; 45:13750-65. [PMID: 27471799 DOI: 10.1039/c6dt01568a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of rare-earth metal diisopropylamide complexes has been obtained via salt metathesis employing LnCl3(THF)x and lithium (LDA) or sodium diisopropylamide (NDA) in n-hexane. Reactions with AM : Ln ratios ≥3 gave ate complexes (AM)Ln(NiPr2)4(THF)n (n = 1, 2; Ln = Sc, Y, La, Lu; AM = Li, Na) in good yields. For smaller rare-earth metal centres such as scandium and lutetium, a Li : Ln ratio = 2.5 accomplished ate-free tris(amido) complexes Ln(NiPr2)3(THF). The chloro-bridged dimeric derivatives [Ln(NiPr2)2(μ-Cl)(THF)]2 (Ln = Sc, Y, La, Lu) could be obtained in high yields for Li : Ln = 1.6-2. The product resulting from the Li : La = 1 : 1.6 reaction revealed a crystal structure containing two different molecules in the crystal lattice, [La(NiPr2)2(THF)(μ-Cl)]2·La(NiPr2)3(THF)2. Recrystallization of the chloro-bridged dimers led to the formation of the monomeric species Ln(NiPr2)2Cl(THF)2 (Ln = Sc, Lu) and La(NiPr2)3(THF)2. The reaction of YCl3 and LDA with Li : Y = 2 in the absence of THF gave a bimetallic ate complex LiY(NiPr2)4 with a chain-like structure. For scandium, the equimolar reactions with LDA or NDA yielded crystals of tetrametallic mono(amido) species, {[Sc(NiPr2)Cl2(THF)]2(LiCl)}2 and [Sc(NiPr2)Cl2(THF)]4, respectively. Depending on the Ln(iii) size, AM, and presence of a donor solvent, ate complexes (AM)Ln(NiPr2)4(THF)n show distinct dynamic behaviour as revealed by variable temperature NMR spectroscopy. The presence of weak LnCH(iPr) β-agostic interactions, as indicated by Ln-N-C angles <105°, is corroborated by DFT calculations and NBO analysis.
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Affiliation(s)
- Tatiana Spallek
- Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany.
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32
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Klementyeva SV, Afonin MY, Bogomyakov AS, Gamer MT, Roesky PW, Konchenko SN. Mono‐ and Dinuclear Rare‐Earth Chlorides Ligated by a Mesityl‐Substituted β‐Diketiminate. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600488] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Svetlana V. Klementyeva
- G. A. Razuvaev Institute of Organometallic Chemistry RASTropinina str. 49603137Nizhny NovgorodRussia
- Institut für Anorganische ChemieKarlsruher Institut für Technologie (KIT)Engesserstr. 15, Geb. 30.4576131KarlsruheGermany
| | - Mikhail Yu. Afonin
- Nikolaev Institute of Inorganic Chemistry SB RASProsp. Lavrentieva 3630090NovosibirskRussia
| | - Artem S. Bogomyakov
- International Tomography Center SB RASInstitutskaya str. 3a630090NovosibirskRussia
| | - Michael T. Gamer
- Institut für Anorganische ChemieKarlsruher Institut für Technologie (KIT)Engesserstr. 15, Geb. 30.4576131KarlsruheGermany
| | - Peter W. Roesky
- Institut für Anorganische ChemieKarlsruher Institut für Technologie (KIT)Engesserstr. 15, Geb. 30.4576131KarlsruheGermany
| | - Sergey N. Konchenko
- Institut für Anorganische ChemieKarlsruher Institut für Technologie (KIT)Engesserstr. 15, Geb. 30.4576131KarlsruheGermany
- Nikolaev Institute of Inorganic Chemistry SB RASProsp. Lavrentieva 3630090NovosibirskRussia
- Novosibirsk State UniversityPirogova str. 2630090NovosibirskRussia
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34
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Kelly RP, Bell TDM, Cox RP, Daniels DP, Deacon GB, Jaroschik F, Junk PC, Le Goff XF, Lemercier G, Martinez A, Wang J, Werner D. Divalent Tetra- and Penta-phenylcyclopentadienyl Europium and Samarium Sandwich and Half-Sandwich Complexes: Synthesis, Characterization, and Remarkable Luminescence Properties. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00842] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Rory P. Kelly
- School
of Chemistry, Monash University, Clayton 3800, Australia
| | - Toby D. M. Bell
- School
of Chemistry, Monash University, Clayton 3800, Australia
| | - Rosalind P. Cox
- School
of Chemistry, Monash University, Clayton 3800, Australia
| | | | - Glen B. Deacon
- School
of Chemistry, Monash University, Clayton 3800, Australia
| | - Florian Jaroschik
- Institut de Chimie Moléculaire de Reims, UMR CNRS 7312,
Case Postale 44, UFR des Sciences Exactes et Naturelles, BP 1039, 56187 Reims Cedex 2, France
| | - Peter C. Junk
- College
of Science, Technology and Engineering, James Cook University, Townsville 4811, Australia
| | - Xavier F. Le Goff
- Laboratoire
“Hétéroéléments et Coordination”, Ecole Polytechnique and CNRS, 91128 Palaiseau Cedex, France
| | - Gilles Lemercier
- Institut de Chimie Moléculaire de Reims, UMR CNRS 7312,
Case Postale 44, UFR des Sciences Exactes et Naturelles, BP 1039, 56187 Reims Cedex 2, France
| | - Agathe Martinez
- Institut de Chimie Moléculaire de Reims, UMR CNRS 7312,
Case Postale 44, UFR des Sciences Exactes et Naturelles, BP 1039, 56187 Reims Cedex 2, France
| | - Jun Wang
- School
of Chemistry, Monash University, Clayton 3800, Australia
- Institut de Chimie Moléculaire de Reims, UMR CNRS 7312,
Case Postale 44, UFR des Sciences Exactes et Naturelles, BP 1039, 56187 Reims Cedex 2, France
| | - Daniel Werner
- School
of Chemistry, Monash University, Clayton 3800, Australia
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35
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High trans-1,4 (co)polymerization of β-myrcene and isoprene with an iminophosphonamide lanthanum catalyst. CHINESE JOURNAL OF POLYMER SCIENCE 2015. [DOI: 10.1007/s10118-016-1729-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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36
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Du G, Xue J, Peng D, Yu C, Wang H, Zhou Y, Bi J, Zhang S, Dong Y, Li X. Copolymerization of isoprene with ethylene catalyzed by cationic half-sandwich fluorenyl scandium catalysts. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27769] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Gaixia Du
- Department of Chemistry, Key Laboratory of Cluster Science of Ministry of Education; Beijing Institute of Technology; 5 South Zhongguancun Street Haidian District Beijing 100081 China
| | - Jiaping Xue
- Department of Chemistry, Key Laboratory of Cluster Science of Ministry of Education; Beijing Institute of Technology; 5 South Zhongguancun Street Haidian District Beijing 100081 China
| | - Deqian Peng
- Department of Chemistry, Key Laboratory of Cluster Science of Ministry of Education; Beijing Institute of Technology; 5 South Zhongguancun Street Haidian District Beijing 100081 China
| | - Chao Yu
- Department of Chemistry, Key Laboratory of Cluster Science of Ministry of Education; Beijing Institute of Technology; 5 South Zhongguancun Street Haidian District Beijing 100081 China
| | - Hanghang Wang
- Department of Chemistry, Key Laboratory of Cluster Science of Ministry of Education; Beijing Institute of Technology; 5 South Zhongguancun Street Haidian District Beijing 100081 China
| | - Yuening Zhou
- Department of Chemistry, Key Laboratory of Cluster Science of Ministry of Education; Beijing Institute of Technology; 5 South Zhongguancun Street Haidian District Beijing 100081 China
| | - Jiaojiao Bi
- Department of Chemistry, Key Laboratory of Cluster Science of Ministry of Education; Beijing Institute of Technology; 5 South Zhongguancun Street Haidian District Beijing 100081 China
| | - Shaowen Zhang
- Department of Chemistry, Key Laboratory of Cluster Science of Ministry of Education; Beijing Institute of Technology; 5 South Zhongguancun Street Haidian District Beijing 100081 China
| | - Yuping Dong
- School of Material Science and Engineering; Beijing Institute of Technology; 5 South Zhongguancun Street Haidian District Beijing 100081 China
| | - Xiaofang Li
- Department of Chemistry, Key Laboratory of Cluster Science of Ministry of Education; Beijing Institute of Technology; 5 South Zhongguancun Street Haidian District Beijing 100081 China
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37
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Yao C, Lin F, Wang M, Liu D, Liu B, Liu N, Wang Z, Long S, Wu C, Cui D. Highly Syndioselective 3,4-Trans Polymerization of (E)-1-(4-Methylphenyl)-1,3-butadiene by Fluorenyl N-Heterocyclic Carbene Ligated Lutetium Bis(alkyl) Precursor. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00226] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Changguang Yao
- State Key
Laboratory of Polymer Physics and Chemistry, Changchun Institute of
Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University of the Chinese
Academy of Sciences, Changchun Branch, Changchun 130022, People’s Republic of China
| | - Fei Lin
- State Key
Laboratory of Polymer Physics and Chemistry, Changchun Institute of
Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University of the Chinese
Academy of Sciences, Changchun Branch, Changchun 130022, People’s Republic of China
| | - Meiyan Wang
- Institute of Theoretical Chemistry, State Key Laboratory
of Theoretical and Computational Chemistry, Jilin University, Changchun 130022, People’s Republic of China
| | - Dongtao Liu
- State Key
Laboratory of Polymer Physics and Chemistry, Changchun Institute of
Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Bo Liu
- State Key
Laboratory of Polymer Physics and Chemistry, Changchun Institute of
Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Na Liu
- State Key
Laboratory of Polymer Physics and Chemistry, Changchun Institute of
Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University of the Chinese
Academy of Sciences, Changchun Branch, Changchun 130022, People’s Republic of China
| | - Zichuan Wang
- State Key
Laboratory of Polymer Physics and Chemistry, Changchun Institute of
Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University of the Chinese
Academy of Sciences, Changchun Branch, Changchun 130022, People’s Republic of China
| | - Shiyu Long
- State Key
Laboratory of Polymer Physics and Chemistry, Changchun Institute of
Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University of the Chinese
Academy of Sciences, Changchun Branch, Changchun 130022, People’s Republic of China
| | - Chunji Wu
- State Key
Laboratory of Polymer Physics and Chemistry, Changchun Institute of
Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Dongmei Cui
- State Key
Laboratory of Polymer Physics and Chemistry, Changchun Institute of
Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
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38
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Deng M, Chi S, Luo Y. Rare-earth metal bis(alkyl) complexes bearing pyrrolidinyl-functionalized cyclopentadienyl, indenyl and fluorenyl ligands: synthesis, characterization and the ligand effect on isoprene polymerization. NEW J CHEM 2015. [DOI: 10.1039/c5nj00279f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ligand effect on isoprene polymerization was investigated using rare-earth metal bis(alkyl) complexes bearing pyrrolidinyl-functionalized cyclopentadienyl, indenyl and fluorenyl ligands.
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Affiliation(s)
- Meng Deng
- Organometallic Chemistry Laboratory
- Ningbo Institute of Technology
- Zhejiang University
- Ningbo 315100
- P. R. China
| | - Shuhui Chi
- Organometallic Chemistry Laboratory
- Ningbo Institute of Technology
- Zhejiang University
- Ningbo 315100
- P. R. China
| | - Yunjie Luo
- Organometallic Chemistry Laboratory
- Ningbo Institute of Technology
- Zhejiang University
- Ningbo 315100
- P. R. China
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39
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Liu B, Li L, Sun G, Liu D, Li S, Cui D. Isoselective 3,4-(co)polymerization of bio-renewable myrcene using NSN-ligated rare-earth metal precursor: an approach to a new elastomer. Chem Commun (Camb) 2015; 51:1039-41. [DOI: 10.1039/c4cc08962f] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Perfect 3,4-regio- (>99%) and isospecific stereo-selective (mmmm > 99%) PMY were achieved by a lutetium dialkyl complex bearing a NSN-bidentate β-diimidosulfonate ligand for the first time.
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Affiliation(s)
- Bo Liu
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Lei Li
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Guangping Sun
- Key Laboratory of Automobile Materials of Ministry of Education
- Department of Materials Science and Engineering
- Jilin University
- Changchun 130022
- China
| | - Dongtao 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
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40
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Jende LN, Hollfelder CO, Maichle-Mössmer C, Anwander R. Rare-Earth-Metal Allyl Complexes Supported by the [2-(N,N-Dimethylamino)ethyl]tetramethylcyclopentadienyl Ligand: Structural Characterization, Reactivity, and Isoprene Polymerization. Organometallics 2014. [DOI: 10.1021/om500725g] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lars N. Jende
- Institut
für Anorganische
Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - Christoph O. Hollfelder
- Institut
für Anorganische
Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - Cäcilia Maichle-Mössmer
- Institut
für Anorganische
Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - Reiner Anwander
- Institut
für Anorganische
Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
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41
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Zhang G, Wei Y, Guo L, Zhu X, Wang S, Zhou S, Mu X. Dinuclear Rare-Earth Metal Alkyl Complexes Supported by Indolyl Ligands in μ-η2:η1:η1Hapticities and their High Catalytic Activity for Isoprene 1,4-cis-Polymerization. Chemistry 2014; 21:2519-26. [DOI: 10.1002/chem.201405179] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Indexed: 11/08/2022]
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42
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Luconi L, Lyubov DM, Rossin A, Glukhova TA, Cherkasov AV, Tuci G, Fukin GK, Trifonov AA, Giambastiani G. Organolanthanide Complexes Supported by Thiazole-Containing Amidopyridinate Ligands: Synthesis, Characterization, and Catalytic Activity in Isoprene Polymerization. Organometallics 2014. [DOI: 10.1021/om500918y] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lapo Luconi
- Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR, Via Madonna del Piano, 10, 50019 Sesto Fiorentino (Florence), Italy
| | - Dmitrii M. Lyubov
- G. A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences, Tropinina
49, GSP-445, 603950 Nizhny Novgorod, Russian Federation
| | - Andrea Rossin
- Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR, Via Madonna del Piano, 10, 50019 Sesto Fiorentino (Florence), Italy
| | - Tatyana A. Glukhova
- G. A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences, Tropinina
49, GSP-445, 603950 Nizhny Novgorod, Russian Federation
| | - Anton V. Cherkasov
- G. A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences, Tropinina
49, GSP-445, 603950 Nizhny Novgorod, Russian Federation
| | - Giulia Tuci
- Institute of Chemistry of OrganoMetallic Compounds, ICCOM-CNR, Via Madonna del Piano, 10, 50019 Sesto Fiorentino (Florence), Italy
| | - Georgy K. Fukin
- G. A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences, Tropinina
49, GSP-445, 603950 Nizhny Novgorod, Russian Federation
| | - Alexander A. Trifonov
- G. A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences, Tropinina
49, GSP-445, 603950 Nizhny Novgorod, Russian Federation
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilova
Street, 119991, Moscow, GSP-1, 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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43
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Liu B, Wang X, Pan Y, Lin F, Wu C, Qu J, Luo Y, Cui D. Unprecedented 3,4-Isoprene and cis-1,4-Butadiene Copolymers with Controlled Sequence Distribution by Single Yttrium Cationic Species. Macromolecules 2014. [DOI: 10.1021/ma5019654] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bo Liu
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xingbao Wang
- State
Key Laboratory of Fine Chemicals, School of Pharmaceutical, Science
and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yupeng Pan
- University of
Chinese Academy of Sciences, Beijing 100049, China
| | - 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, Beijing 100049, China
| | - Chunji Wu
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Jingping Qu
- State
Key Laboratory of Fine Chemicals, School of Pharmaceutical, Science
and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yi Luo
- State
Key Laboratory of Fine Chemicals, School of Pharmaceutical, Science
and Technology, 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
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44
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Martins N, Bonnet F, Visseaux M. Highly efficient cis-1,4 polymerisation of isoprene using simple homoleptic amido rare earth-based catalysts. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.07.056] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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45
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Liu B, Li L, Sun G, Liu J, Wang M, Li S, Cui D. 3,4-Polymerization of Isoprene by Using NSN- and NPN-Ligated Rare Earth Metal Precursors: Switching of Stereo Selectivity and Mechanism. Macromolecules 2014. [DOI: 10.1021/ma501085c] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bo Liu
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- Key
Laboratory of Automobile Materials of Ministry of Education, Department
of Materials Science and Engineering, Jilin University, Changchun, 130025, China
| | - Lei Li
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
| | - Guangping Sun
- Key
Laboratory of Automobile Materials of Ministry of Education, Department
of Materials Science and Engineering, Jilin University, Changchun, 130025, China
| | - Jingyao Liu
- Institute
of Theoretical Chemistry, State Key Laboratory of Theoretical and
Computational Chemistry, Jilin University, Changchun 130022, China
| | - Meiyan Wang
- Institute
of Theoretical Chemistry, State Key Laboratory of Theoretical and
Computational Chemistry, Jilin University, 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
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46
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Mou Z, Liu B, Liu X, Xie H, Rong W, Li L, Li S, Cui D. Efficient and Heteroselective Heteroscorpionate Rare-Earth-Metal Zwitterionic Initiators for ROP of rac-Lactide: Role of σ-Ligand. Macromolecules 2014. [DOI: 10.1021/ma500209t] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Zehuai Mou
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University
of
Chinese Academy of Sciences, Changchun Branch, Changchun 130022, People’s Republic of China
| | - Bo Liu
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Xinli Liu
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Hongyan Xie
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University
of
Chinese Academy of Sciences, Changchun Branch, Changchun 130022, People’s Republic of China
| | - Weifeng Rong
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University
of
Chinese Academy of Sciences, Changchun Branch, Changchun 130022, People’s Republic of China
| | - Lei Li
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University
of
Chinese Academy of Sciences, Changchun Branch, Changchun 130022, People’s Republic of China
| | - Shihui Li
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Dongmei Cui
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
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47
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Werner D, Deacon GB, Junk PC, Anwander R. Cerium(III/IV) formamidinate chemistry, and a stable cerium(IV) diolate. Chemistry 2014; 20:4426-38. [PMID: 24643972 DOI: 10.1002/chem.201304582] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 01/30/2014] [Indexed: 11/07/2022]
Abstract
Four new cerium(III) formamidinate complexes comprising [Ce(p-TolForm)3 ], [Ce(DFForm)3 (thf)2 ], [Ce(DFForm)3 ], and [Ce(EtForm)3 ] were synthesized by protonolysis reactions using [Ce{N(SiMe3 )2 }3 ] and formamidines of varying functionality, namely N,N'-bis(4-methylphenyl)formamidine (p-TolFormH), N,N'-bis(2,6-difluorophenyl)formamidine (DFFormH), and the sterically more demanding N,N'-bis(2,6-diethylphenyl)formamidine (EtFormH). The bimetallic cerium lithium complex [LiCe(DFForm)4 ] was synthesized by treating a mixture of [Ce{N(SiHMe2 )2 }3 (thf)2 ] and [Li{N(SiHMe2 )2 }] with four equivalents of DFFormH in toluene. Oxidation of the trivalent cerium(III) formamidinate complexes by trityl chloride (Ph3 CCl) caused dramatic color changes, although the cerium(IV) species appeared transient and reformed cerium(III) complexes and N'-trityl-N,N'-diarylformamidines shortly after oxidation. The first structurally characterized homoleptic cerium(IV) formamidinate complex [Ce(p-TolForm)4 ] was obtained through a protonolysis reaction between [Ce{N(SiHMe2 )2 }4 ] and four equivalents of p-TolFormH. [Ce{N(SiHMe2 )2 }4 ] was also treated with DFFormH and EtFormH, but the resulting cerium(IV) complexes decomposed before isolation was possible. The new cerium(IV) silylamide complex [Ce{N(SiMe3 )2 }3 (bda)0.5 ]2 (bda=1,4-benzenediolato) was synthesized by treatment of [Ce{N(SiMe3 )2 }3 ] with half an equivalent of 1,4-benzoquinone, and showed remarkable resistance towards protonolysis or reduction.
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Affiliation(s)
- Daniel Werner
- School of Chemistry, Monash University, Victoria 3800 (Australia)
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48
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Yao C, Liu D, Li P, Wu C, Li S, Liu B, Cui D. Highly 3,4-Selective Living Polymerization of Isoprene and Copolymerization with ε-Caprolactone by an Amidino N-Heterocyclic Carbene Ligated Lutetium Bis(alkyl) Complex. Organometallics 2014. [DOI: 10.1021/om400925a] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Changguang Yao
- State Key Laboratory of Polymer Physics and
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University of the Chinese Academy of Sciences, Changchun Branch, Changchun 130022, People’s Republic of China
| | - Dongtao Liu
- State Key Laboratory of Polymer Physics and
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Ping Li
- Jinzhou City Health School, Beijing
Road 4-26, Jinzhou, Liaoning 121001, People’s Republic of China
| | - Chunji Wu
- State Key Laboratory of Polymer Physics and
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Shihui Li
- State Key Laboratory of Polymer Physics and
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Bo Liu
- State Key Laboratory of Polymer Physics and
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
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49
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Gong D, Wang B, Jia X, Zhang X. The enhanced catalytic performance of cobalt catalysts towards butadiene polymerization by introducing a labile donor in a salen ligand. Dalton Trans 2014; 43:4169-78. [DOI: 10.1039/c3dt52708e] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Pan Y, Xu T, Fu S, Yang GW, Lu XB. Remarkable Stereochemistry Control in the Polymerization of α-Olefins Using a Simple Scandium Catalyst System. Macromolecules 2013. [DOI: 10.1021/ma401840f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Yu Pan
- State Key Laboratory of Fine
Chemicals, College of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Tieqi Xu
- State Key Laboratory of Fine
Chemicals, College of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Song Fu
- State Key Laboratory of Fine
Chemicals, College of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Guan-Wen Yang
- State Key Laboratory of Fine
Chemicals, College of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Xiao-Bing Lu
- State Key Laboratory of Fine
Chemicals, College of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| |
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