201
|
Wang L, Cui D, Hou Z, Li W, Li Y. Highly Cis-1,4-Selective Living Polymerization of 1,3-Conjugated Dienes and Copolymerization with ε-Caprolactone by Bis(phosphino)carbazolide Rare-Earth-Metal Complexes. Organometallics 2011. [DOI: 10.1021/om1009395] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lingfang 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
| | - 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
| | - Zhaomin Hou
- Organometallic Chemistry Laboratory, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Wei Li
- College of Chemical Engineering, Dalian University of Technology, People's Republic of China
| | - Yang Li
- College of Chemical Engineering, Dalian University of Technology, People's Republic of China
| |
Collapse
|
202
|
|
203
|
Belen’kii L, Gramenitskaya V, Evdokimenkova Y. The Literature of Heterocyclic Chemistry, Part X, 2005–2007. ADVANCES IN HETEROCYCLIC CHEMISTRY 2011. [DOI: 10.1016/b978-0-12-385464-3.00001-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
204
|
Luo Y, Fan S, Yang J, Fang J, Xu P. Rare earth metal bis(amide) complexes bearing amidinate ancillary ligands: Synthesis, characterization, and performance as catalyst precursors for cis-1,4 selective polymerization of isoprene. Dalton Trans 2011; 40:3053-9. [DOI: 10.1039/c0dt01241f] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
205
|
Du G, Wei Y, Ai L, Chen Y, Xu Q, Liu X, Zhang S, Hou Z, Li X. Living 3,4-Polymerization of Isoprene by Cationic Rare Earth Metal Alkyl Complexes Bearing Iminoamido Ligands. Organometallics 2010. [DOI: 10.1021/om100971d] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gaixia Du
- 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
| | - Yanling Wei
- 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
| | - Lin Ai
- Department of Chemistry, Beijing Normal University, 19 Xinjiekou Wai Street, Haidian Destrict, Beijing 100875, People's Republic of China
| | - Yuanyuan Chen
- 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
| | - Qi Xu
- 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
| | - Xiao Liu
- 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
| | - Shaowen Zhang
- 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
| | - Zhaomin Hou
- Organometallic Chemistry Laboratory and Advanced Catalyst Research Team, RIKEN Advanced Science Institute, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Xiaofang Li
- 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
| |
Collapse
|
206
|
|
207
|
Saliu KO, Cheng J, McDonald R, Ferguson MJ, Takats J. Reactions of Scorpionate-Anchored Yttrium and Lutetium Dialkyls with Terminal Alkynes: From Bimetallic Complexes with Bridging Enynediyl Ligands to Monomeric Terminal Dialkynyl Complexes. Organometallics 2010. [DOI: 10.1021/om100393w] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Affiliation(s)
- Kuburat O. Saliu
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Jianhua Cheng
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Robert McDonald
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Michael J. Ferguson
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Josef Takats
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| |
Collapse
|
208
|
Jian Z, Tang S, Cui D. A Lutetium Allyl Complex That Bears a Pyridyl-Functionalized Cyclopentadienyl Ligand: Dual Catalysis on Highly Syndiospecific and cis-1,4-Selective (Co)Polymerizations of Styrene and Butadiene. Chemistry 2010; 16:14007-15. [DOI: 10.1002/chem.201001634] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
209
|
Yao H, Zhang J, Zhang Y, Sun H, Shen Q. Synthesis of Cationic N-Heterocyclic Carbene Lanthanide Bromide and the Influence of N-Heterocyclic Carbene and Lanthanide Metals. Organometallics 2010. [DOI: 10.1021/om100562q] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Haisheng Yao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Jinguo Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Yong Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Hongmei Sun
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Qi Shen
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Academia Sinica, Shanghai, People’s Republic of China
| |
Collapse
|
210
|
Zimmermann M, Anwander R. Homoleptic Rare-Earth Metal Complexes Containing Ln−C σ-Bonds. Chem Rev 2010; 110:6194-259. [DOI: 10.1021/cr1001194] [Citation(s) in RCA: 232] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Melanie Zimmermann
- Department of Chemistry, University of Bergen, Allégaten 41, 5007 Bergen, Norway, and Institut für Anorganische Chemie, Eberhard-Karls-Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Reiner Anwander
- Department of Chemistry, University of Bergen, Allégaten 41, 5007 Bergen, Norway, and Institut für Anorganische Chemie, Eberhard-Karls-Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| |
Collapse
|
211
|
Kunze M, Taube R. 2,4-Dimethylpentadienyl-Komplexe des Neodyms, Lanthans und Yttriums als Präkatalysatoren für die stereoselektive Butadienpolymerisation. 2,4-Dimethylpentadienyl Complexes of Neodymium, Lanthanum and Yttrium as Precatalysts for the Stereoselective Polymeri. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.201000179] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
212
|
Nieland A, Mix A, Neumann B, Stammler HG, Mitzel NW. Cationic rare-earth-metal methyl complexes: a new preparative access exemplified for Y and Pr. Dalton Trans 2010; 39:6753-60. [PMID: 20442946 DOI: 10.1039/c002252g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new procedure for the generation of cationic methyl complexes of rare-earth metals has been developed for yttrium and praseodymium as two examples from the rare-earth series. The reactions of the rare-earth-metal tetramethylaluminates [Ln(AlMe(4))(3)] of yttrium and praseodymium with three differently sized crown ethers in thf, namely [12]crown-4, [15]crown-5 and [18]crown-6, respectively, led to the compounds [YMe([12]crown-4)(2)](2+)[AlMe(4)](-)(2) (1), [PrMe([12]crown-4)(2)](2+)[AlMe(4)](-)(2) (2), [YMe([15]crown-5)(thf)(2)](2+)[AlMe(4)](-)(2) (3), [Pr([15]crown-5)(2)](3+)[AlMe(4)](-)(3) (4), [YMe([18]crown-6)(thf)](2+)[AlMe(4)](-)(2) (5) and [PrMe([18]crown-6)(thf)(2)](2+) [AlMe(4)](-)(2) (6). With the exception of 4, all compounds contain molecular di-cations with a Ln-CH(3) unit bonded to one (3, 4, 6) or two (1, 2) crown-ether molecules. The compounds were characterised by determination of their crystal structures, by elemental analyses and in the case of the yttrium compounds by variable temperature NMR spectroscopy. The latter gives insights into molecular dynamic processes and methyl group exchange between cations and anions in solution.
Collapse
Affiliation(s)
- Anja Nieland
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615, Bielefeld, Germany
| | | | | | | | | |
Collapse
|
213
|
Trambitas A, Panda T, Tamm M. Rare Earth Metal Complexes Supported by Ancillary Imidazolin-2-iminato Ligands. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.201000224] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
214
|
Kempe R. Rare Earth Polymerization Catalysts Supported by Bulky Aminopyridinato Ligands. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.201000195] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
215
|
Discrete, Base-Free, Cationic Alkaline-Earth Complexes - Access and Catalytic Activity in the Polymerization of Lactide. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000558] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
216
|
Visseaux M, Terrier M, Mortreux A, Roussel P. Facile Synthesis of Lanthanidocenes by the “Borohydride/Alkyl Route” and Their Application in Isoprene Polymerization. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000184] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Marc Visseaux
- Université Lille Nord de France, 59000 Lille, France
- Unité de Catalyse et de Chimie du Solide (UCCS, UMR 8181 CNRS), ENSCL, Bât. C7, Cité Scientifique, B. P. 90108, 59652 Villeneuve d'Ascq Cedex, France, Fax: +33‐3‐20336585
| | - Michael Terrier
- Université Lille Nord de France, 59000 Lille, France
- Unité de Catalyse et de Chimie du Solide (UCCS, UMR 8181 CNRS), ENSCL, Bât. C7, Cité Scientifique, B. P. 90108, 59652 Villeneuve d'Ascq Cedex, France, Fax: +33‐3‐20336585
| | - André Mortreux
- Université Lille Nord de France, 59000 Lille, France
- Unité de Catalyse et de Chimie du Solide (UCCS, UMR 8181 CNRS), ENSCL, Bât. C7, Cité Scientifique, B. P. 90108, 59652 Villeneuve d'Ascq Cedex, France, Fax: +33‐3‐20336585
| | - Pascal Roussel
- Université Lille Nord de France, 59000 Lille, France
- Unité de Catalyse et de Chimie du Solide (UCCS, UMR 8181 CNRS), ENSCL, Bât. C7, Cité Scientifique, B. P. 90108, 59652 Villeneuve d'Ascq Cedex, France, Fax: +33‐3‐20336585
| |
Collapse
|
217
|
Nishiura M, Hou Z. Half-Sandwich Rare Earth Metal Complexes as Novel Catalysts for Olefin Polymerization and Other Chemical Transformations. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2010. [DOI: 10.1246/bcsj.20100003] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
218
|
|
219
|
Rare-Earth Metal Postmetallocene Catalysts with Chelating Amido Ligands. STRUCTURE AND BONDING 2010. [DOI: 10.1007/430_2010_18] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
|
220
|
Zurawski A, Hintze F, Müller-Buschbaum K. Utilising Metal Melts of Low-Melting Metals as a Novel Approach for MOF Synthesis: The 3D-Imidazolate 3∞[Ga2(Im)6ImH] from Gallium and Imidazole. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.201000053] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
221
|
Zhang Z, Cui D, Trifonov AA. Synthesis and Characterization of Heteroscorpionate Rare-Earth Metal Dialkyl Complexes and Catalysis on MMA Polymerization. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000108] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
222
|
Senda T, Hanaoka H, Oda Y, Tsurugi H, Mashima K. Silicon-Bridged Tetramethylcyclopentadienyl−Phenoxy Complexes of Tantalum: Preparation and Alkylation of Et2Si(η5-C5Me4)(3-tBu-5-Me-2-C6H2O)TaCl3 and Generation of Its Cationic Complex. Organometallics 2010. [DOI: 10.1021/om100042t] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Taichi Senda
- Organic Synthesis Research Laboratory, Sumitomo Chemical Co., Ltd., 1-98, Kasugadenaka 3-chome, Konohana-ku, Osaka 554-8558, Japan
| | - Hidenori Hanaoka
- Organic Synthesis Research Laboratory, Sumitomo Chemical Co., Ltd., 1-98, Kasugadenaka 3-chome, Konohana-ku, Osaka 554-8558, Japan
| | - Yoshiaki Oda
- Organic Synthesis Research Laboratory, Sumitomo Chemical Co., Ltd., 1-98, Kasugadenaka 3-chome, Konohana-ku, Osaka 554-8558, Japan
| | - Hayato Tsurugi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| |
Collapse
|
223
|
Döring C, Kretschmer WP, Kempe R. Aminopyridinate-Stabilized Lanthanoid Complexes: Synthesis, Structure and Polymerization of Ethylene and Isoprene. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000097] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
224
|
Evans LT, Coles MP, Cloke FGN, Hitchcock PB. Group 3 complexes incorporating (furyl)-substituted disilazide ligands. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2009.09.051] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
225
|
Miao H, Wang S, Zhou S, Wei Y, Zhou Z, Zhu H, Wu S, Wang H. Synthesis, characterization of some organolanthanide complexes containing 2-pyridylmethyl substituted fluorenyl ligand and catalytic activity of organolanthanide(II) complexes. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2009.12.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
226
|
Skvortsov GG, Tolpyguin AO, Fukin GK, Cherkasov AV, Trifonov AA. Dinuclear Chlorido‐, Alkyl(chlorido)‐, and Hydridoyttrium Complexes Supported by μ‐Bridging‐Silyl‐Linked Bis(amidinate) Ligands. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.200901161] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Grigorii G. Skvortsov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, 603950 Nizhny Novgorod, GSP‐445, Russia, Fax: +7‐831‐462‐7497
| | - Alexei O. Tolpyguin
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, 603950 Nizhny Novgorod, GSP‐445, Russia, Fax: +7‐831‐462‐7497
| | - Georgy K. Fukin
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, 603950 Nizhny Novgorod, GSP‐445, Russia, Fax: +7‐831‐462‐7497
| | - Anton V. Cherkasov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, 603950 Nizhny Novgorod, GSP‐445, Russia, Fax: +7‐831‐462‐7497
| | - Alexander A. Trifonov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, 603950 Nizhny Novgorod, GSP‐445, Russia, Fax: +7‐831‐462‐7497
| |
Collapse
|
227
|
Novel polymerization catalysts and hydride clusters from rare-earth metal dialkyls. Nat Chem 2010; 2:257-68. [DOI: 10.1038/nchem.595] [Citation(s) in RCA: 323] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
228
|
Robert D, Abinet E, Spaniol TP, Okuda J. Cationic allyl complexes of the rare-earth metals: synthesis, structural characterization, and 1,3-butadiene polymerization catalysis. Chemistry 2010; 15:11937-47. [PMID: 19784969 DOI: 10.1002/chem.200901616] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Monocationic bis-allyl complexes [Ln(eta(3)-C(3)H(5))(2)(thf)(3)](+)[B(C(6)X(5))(4)](-) (Ln = Y, La, Nd; X = H, F) and dicationic mono-allyl complexes of yttrium and the early lanthanides [Ln(eta(3)-C(3)H(5))(thf)(6)](2+)[BPh(4)](2)(-) (Ln = La, Nd) were prepared by protonolysis of the tris-allyl complexes [Ln(eta(3)-C(3)H(5))(3)(diox)] (Ln = Y, La, Ce, Pr, Nd, Sm; diox = 1,4-dioxane) isolated as a 1,4-dioxane-bridged dimer (Ln = Ce) or THF adducts [Ln(eta(3)-C(3)H(5))(3)(thf)(2)] (Ln = Ce, Pr). Allyl abstraction from the neutral tris-allyl complex by a Lewis acid, ER(3) (Al(CH(2)SiMe(3))(3), BPh(3)) gave the ion pair [Ln(eta(3)-C(3)H(5))(2)(thf)(3)](+)[ER(3)(eta(1)-CH(2)CH=CH(2))](-) (Ln = Y, La; ER(3) = Al(CH(2)SiMe(3))(3), BPh(3)). Benzophenone inserts into the La-C(allyl) bond of [La(eta(3)-C(3)H(5))(2)(thf)(3)](+)[BPh(4)](-) to form the alkoxy complex [La{OCPh(2)(CH(2)CH=CH(2))}(2)(thf)(3)](+)[BPh(4)](-). The monocationic half-sandwich complexes [Ln(eta(5)-C(5)Me(4)SiMe(3))(eta(3)-C(3)H(5))(thf)(2)](+)[B(C(6)X(5))(4)](-) (Ln = Y, La; X = H, F) were synthesized from the neutral precursors [Ln(eta(5)-C(5)Me(4)SiMe(3))(eta(3)-C(3)H(5))(2)(thf)] by protonolysis. For 1,3-butadiene polymerization catalysis, the yttrium-based systems were more active than the corresponding lanthanum or neodymium homologues, giving polybutadiene with approximately 90% 1,4-cis stereoselectivity.
Collapse
Affiliation(s)
- Dominique Robert
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | | | | | | |
Collapse
|
229
|
Paolucci G, Bortoluzzi M, Napoli M, Longo P, Bertolasi V. The role of the ionic radius in the ethylene polymerization catalyzed by new group 3 and lanthanide scorpionate complexes. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.molcata.2009.10.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
230
|
Trambitas AG, Panda TK, Jenter J, Roesky PW, Daniliuc C, Hrib CG, Jones PG, Tamm M. Rare-Earth Metal Alkyl, Amido, and Cyclopentadienyl Complexes Supported by Imidazolin-2-iminato Ligands: Synthesis, Structural Characterization, and Catalytic Application. Inorg Chem 2010; 49:2435-46. [DOI: 10.1021/ic9024052] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexandra G. Trambitas
- Institut für Anorganische und Analytische Chemie, Technische Universität Carolo-Wilhelmina, Hagenring 30, 38106 Braunschweig, Germany
| | - Tarun K. Panda
- Institut für Anorganische und Analytische Chemie, Technische Universität Carolo-Wilhelmina, Hagenring 30, 38106 Braunschweig, Germany
| | - Jelena Jenter
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie (KIT), Engesserstrasse 15, 76128 Karlsruhe, Germany
| | - Peter W. Roesky
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie (KIT), Engesserstrasse 15, 76128 Karlsruhe, Germany
| | - Constantin Daniliuc
- Institut für Anorganische und Analytische Chemie, Technische Universität Carolo-Wilhelmina, Hagenring 30, 38106 Braunschweig, Germany
| | - Cristian G. Hrib
- Institut für Anorganische und Analytische Chemie, Technische Universität Carolo-Wilhelmina, Hagenring 30, 38106 Braunschweig, Germany
| | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie, Technische Universität Carolo-Wilhelmina, Hagenring 30, 38106 Braunschweig, Germany
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie, Technische Universität Carolo-Wilhelmina, Hagenring 30, 38106 Braunschweig, Germany
| |
Collapse
|
231
|
Jaroschik F, Bonnet F, Le Goff XF, Ricard L, Nief F, Visseaux M. Synthesis of samarium(ii) borohydrides and their behaviour as initiators in styrene and ε-caprolactone polymerisation. Dalton Trans 2010; 39:6761-6. [DOI: 10.1039/c001795g] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
232
|
Yang J, Xu P, Luo Y. Bimetallic Rare Earth Alkyl Complexes Bearing Bridged Amidinate Ligands: Synthesis and Activity forL-Lactide Polymerization. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.201090096] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
233
|
Zhang Z, Cui D, Wang B, Liu B, Yang Y. Polymerization of 1,3-Conjugated Dienes with Rare-Earth Metal Precursors. STRUCTURE AND BONDING 2010. [DOI: 10.1007/430_2010_16] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
234
|
Fegler W, Spaniol TP, Okuda J. Trimethylsilylmethyl complexes of the rare-earth metals with sterically hindered N-heterocyclic carbene ligands: adduct formation and C–H bond activation. Dalton Trans 2010; 39:6774-9. [DOI: 10.1039/c001699c] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
235
|
Clark L, Cushion MG, Dyer HE, Schwarz AD, Duchateau R, Mountford P. Dicationic and zwitterionic catalysts for the amine-initiated, immortal ring-opening polymerisation of rac-lactide: facile synthesis of amine-terminated, highly heterotactic PLA. Chem Commun (Camb) 2010; 46:273-5. [DOI: 10.1039/b919162c] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
236
|
Litlabø R, Lee HS, Niemeyer M, Törnroos KW, Anwander R. Rare-earth metal bis(tetramethylaluminate) complexes supported by a sterically crowded triazenido ligand. Dalton Trans 2010; 39:6815-25. [DOI: 10.1039/b925837j] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
237
|
Wooles AJ, Mills DP, Lewis W, Blake AJ, Liddle ST. Lanthanide tri-benzyl complexes: structural variations and useful precursors to phosphorus-stabilised lanthanide carbenes. Dalton Trans 2010:500-10. [DOI: 10.1039/b911717b] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
238
|
Perrin L, Bonnet F, Visseaux M, Maron L. A DFT study of conjugated dienes polymerisation catalyzed by [Cp*ScR]+: insights into the propensity for cis-1,4 insertion. Chem Commun (Camb) 2010; 46:2965-7. [DOI: 10.1039/b924091h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
239
|
Yang Y, Cui D, Chen X. The behavior of pyrrolyl ligands within the rare-earth metal alkyl complexes. Insertion of CN and CO double bonds into Ln–σ-C bonds. Dalton Trans 2010; 39:3959-67. [DOI: 10.1039/b926038b] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
|
240
|
Li X, Nishiura M, Hu L, Mori K, Hou Z. Alternating and random copolymerization of isoprene and ethylene catalyzed by cationic half-sandwich scandium alkyls. J Am Chem Soc 2009; 131:13870-82. [PMID: 19728718 DOI: 10.1021/ja9056213] [Citation(s) in RCA: 168] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The acid-base reactions between the scandium trialkyl complex Sc(CH(2)SiMe(3))(3)(THF)(2) and 1 equiv of Cp'-H afforded straightforwardly the corresponding mono(cyclopentadienyl)scandium dialkyl complexes Cp'Sc(CH(2)SiMe(3))(2)(THF) (Cp' = C(5)H(5) (1), C(5)MeH(4) (2), C(5)Me(4)H (3), C(5)Me(5) (4), C(5)Me(4)SiMe(3) (5)) in 65-80% isolated yields. The analogous half-sandwich complexes having a heteroatom-containing side arm, (C(5)Me(4)R)Sc(CH(2)SiMe(3))(2) (R = CH(2)CH(2)PPh(2) (6), C(6)H(4)OMe-omicron (7)), were obtained by the one-pot metathetical reactions of ScCl(3)(THF)(3) with 1 equiv of the potassium salts of the ligands and 2 equiv of LiCH(2)SiMe(3). The similar reactions of ScCl(3)(THF)(3) with KC(5)Me(4)(C(6)H(4)NMe(2)-omicron) and LiCH(2)SiMe(3) gave a methylene-bridged binuclear complex [{C(5)Me(4)(omicron-C(6)H(4)N(Me)CH(2)-mu}Sc(CH(2)SiMe(3))](2) (8). Complexes 1-8 were fully characterized by (1)H, (13)C NMR, X-ray, and microelemental analyses. The reactions of 5 and 7 with 1 equiv of [PhMe(2)NH][B(C(6)F(5))(4)] in THF afforded quantitatively the structurally characterizable cationic monoalkyl complexes [(C(5)Me(4)SiMe(3))Sc(CH(2)SiMe(3))(THF)(2)][B(C(6)F(5))(4)] (10) and [(C(5)Me(4)C(6)H(4)OMe-omicron)Sc(CH(2)SiMe(3))(THF)(2)][B(C(6)F(5))(4)] (11), respectively. In the presence of an activator such as [Ph(3)C][B(C(6)F(5))(4)], [PhMe(2)NH][B(C(6)F(5))(4)], or B(C(6)F(5))(3), all of the half-sandwich dialkyl complexes 1-7 were active for isoprene polymerization and isoprene-ethylene copolymerization, with the activity and selectivity being significantly dependent on the substituents at the cyclopentadienyl ligands to yield the corresponding homo- and copolymer materials with different microstructures and compositions. In the homopolymerization of isoprene, the less sterically demanding complexes 1 and 2 showed high cis-1,4 selectivity (up to 95%), whereas the more sterically demanding complexes 3-5 yielded 3,4-polyisoprene (51-65%) as a major product. The ether side arm coordinated complex 7 preferred trans-1,4-polyisoprene formation (60-79%), whereas the phosphine analogue 6 showed high cis-1,4 selectivity (84-90%) under the same conditions. In the copolymerization of isoprene and ethylene, complexes 1 and 2 afforded the random copolymers with high isoprene contents (85-92 mol %) and predominant cis-1,4-microstructures (up to 90%), thus constituting the first example of cis-1,4-selective copolymerization of isoprene with ethylene. In contrast, the copolymerization of isoprene and ethylene by 3, 4, 6, and 7 gave, for the first time, almost perfect alternating isoprene-ethylene copolymers. Possible mechanisms of the polymerization and copolymerization processes were proposed on the basis of the DFT calculations.
Collapse
Affiliation(s)
- Xiaofang Li
- Organometallic Chemistry Laboratory, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198 Japan
| | | | | | | | | |
Collapse
|
241
|
Takimoto M, Usami S, Hou Z. Scandium-Catalyzed Regio- and Stereospecific Methylalumination of Silyloxy/Alkoxy-Substituted Alkynes and Alkenes. J Am Chem Soc 2009; 131:18266-8. [DOI: 10.1021/ja909126k] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Masanori Takimoto
- Organometallic Chemistry Laboratory, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Saori Usami
- Organometallic Chemistry Laboratory, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Zhaomin Hou
- Organometallic Chemistry Laboratory, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| |
Collapse
|
242
|
Michiue K, Oshiki T, Takai K, Mitani M, Fujita T. Tantalum Complexes Incorporating Tris(pyrazolyl)Borate Ligands: Syntheses, Structures, and Ethylene Polymerization Behavior. Organometallics 2009. [DOI: 10.1021/om9004719] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kenji Michiue
- Research Center, Mitsui Chemicals, Inc., 580-32 Nagaura, Sodegaura, Chiba 299-0265, Japan
| | - Toshiyuki Oshiki
- Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Kita-ku, Okayama 700-8530, Japan
| | - Kazuhiko Takai
- Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Kita-ku, Okayama 700-8530, Japan
| | - Makoto Mitani
- Research Center, Mitsui Chemicals, Inc., 580-32 Nagaura, Sodegaura, Chiba 299-0265, Japan
| | - Terunori Fujita
- Research Center, Mitsui Chemicals, Inc., 580-32 Nagaura, Sodegaura, Chiba 299-0265, Japan
| |
Collapse
|
243
|
Conroy KD, Piers WE, Parvez M. Nucleophilic Degradation of a β-Diketiminato Ancillary by a Transient Scandium Hydride Intermediate. Organometallics 2009. [DOI: 10.1021/om900700d] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Korey D. Conroy
- University of Calgary, 2500 University Drive N.W., Calgary, Canada, T2N 1N4
| | - Warren E. Piers
- University of Calgary, 2500 University Drive N.W., Calgary, Canada, T2N 1N4
| | - Masood Parvez
- University of Calgary, 2500 University Drive N.W., Calgary, Canada, T2N 1N4
| |
Collapse
|
244
|
Affiliation(s)
- Polly L Arnold
- School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh, EH9 3JJ, UK.
| | | |
Collapse
|
245
|
Mills DP, Wooles AJ, McMaster J, Lewis W, Blake AJ, Liddle ST. Heteroleptic [M(CH2C6H5)2(I)(THF)3] Complexes (M = Y or Er): Remarkably Stable Precursors to Yttrium and Erbium T-Shaped Carbenes. Organometallics 2009. [DOI: 10.1021/om9007949] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David P. Mills
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD U.K
| | - Ashley J. Wooles
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD U.K
| | - Jonathan McMaster
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD U.K
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD U.K
| | - Alexander J. Blake
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD U.K
| | - Stephen T. Liddle
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD U.K
| |
Collapse
|
246
|
Li S, Cui D, Li D, Hou Z. Highly 3,4-Selective Polymerization of Isoprene with NPN Ligand Stabilized Rare-Earth Metal Bis(alkyl)s. Structures and Performances. Organometallics 2009. [DOI: 10.1021/om900261n] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- 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
- 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
| | - Danfeng 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
- Graduate School of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China
| | - Zhaomin Hou
- Organometallic Chemistry Laboratory, RIKEN, Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| |
Collapse
|
247
|
Terao H, Iwashita A, Ishii S, Tanaka H, Yoshida Y, Mitani M, Fujita T. Ethylene/Norbornene Copolymerization Behavior of Bis(phenoxy−imine)Ti Complexes Combined with MAO. Macromolecules 2009. [DOI: 10.1021/ma900890b] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hiroshi Terao
- Research Center, Mitsui Chemicals, Inc., 580-32, Nagaura, Sodegaura, Chiba, 299-0265, Japan
| | - Akihiko Iwashita
- Research Center, Mitsui Chemicals, Inc., 580-32, Nagaura, Sodegaura, Chiba, 299-0265, Japan
| | - Seiichi Ishii
- Research Center, Mitsui Chemicals, Inc., 580-32, Nagaura, Sodegaura, Chiba, 299-0265, Japan
| | - Hidetsugu Tanaka
- Research Center, Mitsui Chemicals, Inc., 580-32, Nagaura, Sodegaura, Chiba, 299-0265, Japan
| | - Yasunori Yoshida
- Research Center, Mitsui Chemicals, Inc., 580-32, Nagaura, Sodegaura, Chiba, 299-0265, Japan
| | - Makoto Mitani
- Research Center, Mitsui Chemicals, Inc., 580-32, Nagaura, Sodegaura, Chiba, 299-0265, Japan
| | - Terunori Fujita
- Research Center, Mitsui Chemicals, Inc., 580-32, Nagaura, Sodegaura, Chiba, 299-0265, Japan
| |
Collapse
|
248
|
Kenward AL, Piers WE, Parvez M. Low-Coordinate Organoyttrium Complexes Supported by β-Diketiminato Ligands. Organometallics 2009. [DOI: 10.1021/om900082d] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alyson L. Kenward
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada
| | - Warren E. Piers
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada
| | - Masood Parvez
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada
| |
Collapse
|
249
|
Mono(amidinate) rare earth metal bis(alkyl) complexes: Synthesis, structure and their activity for l-lactide polymerization. J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2008.12.014] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
250
|
Displacement, reduction, and ligand redistribution reactivity of the cationic mono-C5Me5 Ln2+ complexes (C5Me5)Ln(BPh4) (Ln=Sm, Yb). J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2008.11.038] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|