101
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Zhang L, Nishiura M, Yuki M, Luo Y, Hou Z. Isoprene Polymerization with Yttrium Amidinate Catalysts: Switching the Regio- and Stereoselectivity by Addition of AlMe3. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200705120] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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102
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Gao W, Cui D. Highly cis-1,4 selective polymerization of dienes with homogeneous Ziegler-Natta catalysts based on NCN-pincer rare earth metal dichloride precursors. J Am Chem Soc 2008; 130:4984-91. [PMID: 18338895 DOI: 10.1021/ja711146t] [Citation(s) in RCA: 209] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first aryldiimine NCN-pincer ligated rare earth metal dichlorides (2,6-(2,6-C6H3R2N=CH)2-C6H3)LnCl2(THF)2 (Ln = Y, R = Me (1), Et (2), iPr (3); R = Et, Ln = La (4), Nd (5), Gd (6), Sm (7), Eu (8), Tb (9), Dy (10), Ho (11), Yb (12), Lu (13)) were successfully synthesized via transmetalation between 2,6-(2,6-C6H3-R2N=CH)2-C6H3Li and LnCl3(THF)(1-3.5). These complexes are isostructural monomers with two coordinating THF molecules, where the pincer ligand coordinates to the central metal ion in a kappaC:kappaN:kappaN' tridentate mode, adopting a meridional geometry. Complexes 1-6, 9-11, and 13 combined with aluminum tris(alkyl)s and [Ph3C][B(C6F5)4] established a homogeneous Ziegler-Natta catalyst system, which exhibited high activities and excellent cis-1,4 selectivities for the polymerizations of butadiene (T(p) = 25 degrees C, 99.9%; 0 degrees C, 100%) and isoprene (T(p) = 25 degrees C, 98.8%). Remarkably, such high cis-1,4 selectivity almost remained at elevated polymerization temperatures up to 80 degrees C and did not vary with the type of the central lanthanide element, however, which was influenced obviously by the ortho substituent of the N-aryl ring of the ligands and the bulkiness of the aluminum alkyls. The Ln-Al bimetallic cations were considered as the active species. These results shed new light on improving the catalytic performance of the conventional Ziegler-Natta catalysts for the specific selective polymerization of dienes.
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Affiliation(s)
- Wei Gao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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103
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Wang B, Cui D, Lv K. Highly 3,4-Selective Living Polymerization of Isoprene with Rare Earth Metal Fluorenyl N-Heterocyclic Carbene Precursors. Macromolecules 2008. [DOI: 10.1021/ma702505n] [Citation(s) in RCA: 168] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Baoli Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
| | - Kui Lv
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
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104
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Li S, Miao W, Tang T, Dong W, Zhang X, Cui D. New Rare Earth Metal Bis(alkyl)s Bearing an Iminophosphonamido Ligand. Synthesis and Catalysis toward Highly 3,4-Selective Polymerization of Isoprene. Organometallics 2008. [DOI: 10.1021/om700945r] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shihui Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Peopleʼs Republic of China, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, Peopleʼs Republic of China
| | - Wei Miao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Peopleʼs Republic of China, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, Peopleʼs Republic of China
| | - Tao Tang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Peopleʼs Republic of China, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, Peopleʼs Republic of China
| | - Weimin Dong
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Peopleʼs Republic of China, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, Peopleʼs Republic of China
| | - Xuequan Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Peopleʼs Republic of China, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, Peopleʼs Republic of China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Peopleʼs Republic of China, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, Peopleʼs Republic of China
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105
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Robert D, Kondracka M, Okuda J. Cationic rare-earth metal bis(tetrahydridoborato) complexes: direct synthesis, structure and ring-opening polymerisation activity toward cyclic esters. Dalton Trans 2008:2667-9. [DOI: 10.1039/b801030g] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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106
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Visseaux M, Mainil M, Terrier M, Mortreux A, Roussel P, Mathivet T, Destarac M. Cationic borohydrido–neodymium complex: Synthesis, characterization and its application as an efficient pre-catalyst for isoprene polymerisation. Dalton Trans 2008:4558-61. [DOI: 10.1039/b806669h] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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107
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Meermann C, Törnroos KW, Nerdal W, Anwander R. Rare-Earth Metal Mixed Chloro/Methyl Compounds: Heterogeneous–Homogeneous Borderline Catalysts in 1,3-Diene Polymerization. Angew Chem Int Ed Engl 2007; 46:6508-13. [PMID: 17645268 DOI: 10.1002/anie.200604829] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Christian Meermann
- Department of Chemistry, University of Bergen, Allégaten 41, 5007 Bergen, Norway
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108
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Meermann C, Törnroos K, Nerdal W, Anwander R. Rare-Earth Metal Mixed Chloro/Methyl Compounds: Heterogeneous–Homogeneous Borderline Catalysts in 1,3-Diene Polymerization. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200604829] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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109
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Yang Y, Liu B, Lv K, Gao W, Cui D, Chen X, Jing X. Pyrrolide-Supported Lanthanide Alkyl Complexes. Influence of Ligands on Molecular Structure and Catalytic Activity toward Isoprene Polymerization. Organometallics 2007. [DOI: 10.1021/om7003095] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yi Yang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, 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, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China
| | - Kui Lv
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China
| | - Wei Gao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, 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, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China
| | - Xuesi Chen
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China
| | - Xiabin Jing
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China, and Graduate School of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China
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110
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Paolucci G, Zanella A, Bortoluzzi M, Sostero S, Longo P, Napoli M. New constrained geometry catalysts-type yttrium, samarium and neodymium derivatives in olefin polymerization. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.molcata.2007.03.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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111
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Deacon GB, Evans DJ, Forsyth CM, Junk PC. Lanthanoid(II) tetraphenylborate complexes: From discrete ions to pseudo metallocenes. Coord Chem Rev 2007. [DOI: 10.1016/j.ccr.2006.11.005] [Citation(s) in RCA: 9] [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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112
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Zhang L, Suzuki T, Luo Y, Nishiura M, Hou Z. Cationic alkyl rare-earth metal complexes bearing an ancillary bis(phosphinophenyl)amido ligand: a catalytic system for living cis-1,4-polymerization and copolymerization of isoprene and butadiene. Angew Chem Int Ed Engl 2007; 46:1909-13. [PMID: 17274086 DOI: 10.1002/anie.200604348] [Citation(s) in RCA: 237] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Lixin Zhang
- Organometallic Chemistry Laboratory, RIKEN (The Institute of Physical and Chemical Research), Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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113
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Zhou S, Wang S, Sheng E, Zhang L, Yu Z, Xi X, Chen G, Luo W, Li Y. Synthesis, Characterization, and Catalytic Activity of Some Neodymium(III), Ytterbium(II), and Europium(II) Complexes with Pyrrolidinyl- and Piperidinyl-Functionalized Indenyl Ligands. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200601102] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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114
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Abstract
Very fast, reversible, polyethylene (PE) chain transfer or complex-catalysed "Aufbaureaktion" describes a "living" chain-growing process on a main-group metal or zinc atom; this process is catalysed by an organo-transition-metal or lanthanide complex. PE chains are transferred very fast between the two metal sites and chain growth takes place through ethylene insertion into the transition-metal- or lanthanide-carbon bond-coordinative chain-transfer polymerisation (CCTP). The transferred chains "rest" at the main-group or zinc centre, at which chain-termination processes like beta-H transfer/elimination are of low significance. Such protocols can be used to synthesise very narrowly distributed PE materials (M(w)/M(n)<1.1 up to a molecular weight of about 4000 g mol(-1)) with differently functionalised end groups. Higher molecular-weight polymers can be obtained with a slightly increased M(w)/M(n), since diffusion control and precipitation of the polymers influences the chain-transfer process. Recently, a few transition-metal- or lanthanide-based catalyst systems that catalyse such a highly reversible chain-growing process have been described. They are summarised and compared within this contribution.
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Affiliation(s)
- Rhett Kempe
- Anorganische Chemie II, University of Bayreuth, 95440 Bayreuth, Germany.
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115
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Zhang L, Suzuki T, Luo Y, Nishiura M, Hou Z. Cationic Alkyl Rare-Earth Metal Complexes Bearing an Ancillary Bis(phosphinophenyl)amido Ligand: A Catalytic System for Livingcis-1,4-Polymerization and Copolymerization of Isoprene and Butadiene. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200604348] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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116
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Sheng HT, Zhou H, Guo HD, Sun HM, Yao YM, Wang JF, Zhang Y, Shen Q. Synthesis and molecular structure of the cationic samarium phenoxide complex [(ArO)2Sm(DME)2][BPh4]·THF and its catalytic activity for the polymerization of ε-caprolactone. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2006.11.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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117
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Nakajima Y, Okuda J. Reactivity of Monocationic Bis(alkyl) and Dicationic Mono(alkyl) Yttrium Complexes toward Ketones and Carbon Dioxide. Organometallics 2007. [DOI: 10.1021/om0610290] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yumiko Nakajima
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Jun Okuda
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
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118
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Lukesová L, Ward BD, Bellemin-Laponnaz S, Wadepohl H, Gade LH. High tacticity control in organolanthanide polymerization catalysis: formation of isotactic poly(α-alkenes) with a chiral C3-symmetric thulium complex. Dalton Trans 2007:920-2. [PMID: 17308670 DOI: 10.1039/b700269f] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The thulium complexes [Tm((i)Pr-trisox)(CH(2)SiMe(2)R)(3)] (R = Me , Ph ) were synthesized from the thulium trialkyl precursors [Tm(CH(2)SiMe(2)R)(3)(thf)(2)]; reaction of with two equivalents of [Ph(3)C][B(C(6)F(5))(4)] gave a cationic complex 1c, which was found to polymerize 1-hexene, 1-heptene and 1-octene to give the corresponding polyolefins with moderate to good activities and with minimum isotacticity of 90%, 83% and 95%, respectively.
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Affiliation(s)
- Lenka Lukesová
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
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119
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Li X, Nishiura M, Mori K, Mashiko T, Hou Z. Cationic scandium aminobenzyl complexes. Synthesis, structure and unprecedented catalysis of copolymerization of 1-hexene and dicyclopentadiene. Chem Commun (Camb) 2007:4137-9. [DOI: 10.1039/b708534f] [Citation(s) in RCA: 146] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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120
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Luo Y, Nishiura M, Hou Z. Rare earth metal bis(alkyl) complexes bearing a monodentate arylamido ancillary ligand: Synthesis, structure, and Olefin polymerization catalysis. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2006.06.048] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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121
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Kretschmer WP, Meetsma A, Hessen B, Schmalz T, Qayyum S, Kempe R. Reversible Chain Transfer between Organoyttrium Cations and Aluminum: Synthesis of Aluminum-Terminated Polyethylene with Extremely Narrow Molecular-Weight Distribution. Chemistry 2006; 12:8969-78. [PMID: 17009362 DOI: 10.1002/chem.200600660] [Citation(s) in RCA: 136] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Aminopyridinato-ligand-stabilized organoyttrium cations are accessible in very good yield through alkane elimination from trialkyl yttrium complexes with sterically demanding aminopyridines, followed by abstraction of one of the two alkyl functions using ammonium borates. At 80 degrees C and in the presence of small amounts of aluminum alkyl compounds, very high ethylene polymerization activities are observed if very bulky aminopyridinato ligands are used. During these polymerizations a reversible polyethylene chain transfer is observed between the organoyttrium cations and aluminum alkyls. The chain-transfer catalyst system described here is able to produce relatively long-chain (up to 4000 g mol-1) Al-terminated polyethylene with a molecular-weight distribution<1.1. In the synthesis of higher molecular PE a slight increase in polydispersity with increasing chain length (15,600 g mol-1, approximately 1.4) is observed owing to reduced reversibility caused by higher viscosity and precipitation of polymer chains (temperature of 80-100 degrees C).
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Affiliation(s)
- Winfried P Kretschmer
- Stratingh Institut for Chemistry and Chemical Engineering, Center for Catalytic Olefin Polymerization, University of Groningen, Nijenborgh 4 9747 AG Groningen, The Netherlands.
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122
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Zeimentz PM, Spaniol TP, Okuda J. Neutral and cationic rare-earth metal alkyl complexes that contain bis(2-methoxyethyl)(trimethylsilyl)amine, a neutral [ONO]-type ligand. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2006.04.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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123
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Tsuchiya H, Macak JM, Ghicov A, Tang YC, Fujimoto S, Niinomi M, Noda T, Schmuki P. Nanotube oxide coating on Ti–29Nb–13Ta–4.6Zr alloy prepared by self-organizing anodization. Electrochim Acta 2006. [DOI: 10.1016/j.electacta.2006.03.087] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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124
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Fischbach A, Meermann C, Eickerling G, Scherer W, Anwander R. Discrete Lanthanide Aryl(alk)oxide Trimethylaluminum Adducts as Isoprene Polymerization Catalysts. Macromolecules 2006. [DOI: 10.1021/ma061149j] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andreas Fischbach
- Anorganisch-chemisches Institut, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany, Institut für Physik, Universität Augsburg, Universitätsstrasse 1, D-86159 Augsburg, Germany, and Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Christian Meermann
- Anorganisch-chemisches Institut, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany, Institut für Physik, Universität Augsburg, Universitätsstrasse 1, D-86159 Augsburg, Germany, and Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Georg Eickerling
- Anorganisch-chemisches Institut, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany, Institut für Physik, Universität Augsburg, Universitätsstrasse 1, D-86159 Augsburg, Germany, and Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Wolfgang Scherer
- Anorganisch-chemisches Institut, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany, Institut für Physik, Universität Augsburg, Universitätsstrasse 1, D-86159 Augsburg, Germany, and Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Reiner Anwander
- Anorganisch-chemisches Institut, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany, Institut für Physik, Universität Augsburg, Universitätsstrasse 1, D-86159 Augsburg, Germany, and Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
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125
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Kretschmer WP, ten Brummelhuis B, Meetsma A, Teuben JH. Darstellung und Charakterisierung von Bis(η5-1,2,3,4,5-Pentamethylcyclo-pentadienyl)(η3-1-phenylallyl)lanthanum˙Tetrahydrofuran. Z Anorg Allg Chem 2006. [DOI: 10.1002/zaac.200600141] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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126
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Fischbach A, Anwander R. Rare-Earth Metals and Aluminum Getting Close in Ziegler-Type Organometallics. ADVANCES IN POLYMER SCIENCE 2006. [DOI: 10.1007/12_093] [Citation(s) in RCA: 191] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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127
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Dietrich HM, Meermann C, Törnroos KW, Anwander R. Sounding out the Reactivity of Trimethylyttrium. Organometallics 2006. [DOI: 10.1021/om060488y] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- H. Martin Dietrich
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007, Bergen, Norway
| | - Christian Meermann
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007, Bergen, Norway
| | - Karl W. Törnroos
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007, Bergen, Norway
| | - Reiner Anwander
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007, Bergen, Norway
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128
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Hou Z, Luo Y, Li X. Cationic rare earth metal alkyls as novel catalysts for olefin polymerization and copolymerization. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.01.055] [Citation(s) in RCA: 173] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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129
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Ajellal N, Furlan L, Thomas CM, Casagrande OL, Carpentier JF. Mixed Aluminum-Magnesium-Rare Earth Allyl Catalysts for Controlled Isoprene Polymerization: Modulation of Stereocontrol. Macromol Rapid Commun 2006. [DOI: 10.1002/marc.200500775] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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130
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Fischbach A, Perdih F, Herdtweck E, Anwander R. Structure−Reactivity Relationships in Rare-Earth Metal Carboxylate-Based Binary Ziegler-Type Catalysts. Organometallics 2006. [DOI: 10.1021/om060052i] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andreas Fischbach
- Department Chemie, Lehrstuhl Für Anorganische Chemie, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany, and Department of Chemistry, University of Bergen, Allégaten 41, N-5007, Bergen, Norway
| | - Franc Perdih
- Department Chemie, Lehrstuhl Für Anorganische Chemie, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany, and Department of Chemistry, University of Bergen, Allégaten 41, N-5007, Bergen, Norway
| | - Eberhardt Herdtweck
- Department Chemie, Lehrstuhl Für Anorganische Chemie, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany, and Department of Chemistry, University of Bergen, Allégaten 41, N-5007, Bergen, Norway
| | - Reiner Anwander
- Department Chemie, Lehrstuhl Für Anorganische Chemie, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany, and Department of Chemistry, University of Bergen, Allégaten 41, N-5007, Bergen, Norway
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131
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Polymerization of 1-Hexene and Copolymerization of Ethylene with 1-Hexene Catalyzed by Cationic Half-Sandwich Scandium Alkyls. STUDIES IN SURFACE SCIENCE AND CATALYSIS 2006. [DOI: 10.1016/s0167-2991(06)80439-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Arndt S, Elvidge BR, Zeimentz PM, Spaniol TP, Okuda J. Formation of a Dicationic Yttrium η2-Pyridyl Complex from an Yttrium Methyl Dication by C−H Activation of Pyridine. Organometallics 2005. [DOI: 10.1021/om0509140] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stefan Arndt
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Benjamin R. Elvidge
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Peter M. Zeimentz
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Thomas P. Spaniol
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Jun Okuda
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
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