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Shi X, Li S, Reiß M, Spannenberg A, Holtrichter-Rößmann T, Reiß F, Beweries T. 1-Zirconacyclobuta-2,3-dienes: synthesis of organometallic analogs of elusive 1,2-cyclobutadiene, unprecedented intramolecular C-H activation, and reactivity studies. Chem Sci 2021; 12:16074-16084. [PMID: 35024129 PMCID: PMC8672727 DOI: 10.1039/d1sc06052j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 11/22/2021] [Indexed: 01/25/2023] Open
Abstract
The structure, bonding, and reactivity of small, highly unsaturated ring systems is of fundamental interest for inorganic and organic chemistry. Four-membered metallacyclobuta-2,3-dienes, also referred to as metallacycloallenes, are among the most exotic examples for ring systems as these represent organometallic analogs of 1,2-cyclobutadiene, the smallest cyclic allene. Herein, the synthesis of the first examples of 1-zirconacyclobuta-2,3-dienes of the type [Cp'2Zr(Me3SiC3SiMe3)] (Cp'2 = rac-(ebthi), (ebthi = 1,2-ethylene-1,1'-bis(η5-tetrahydroindenyl)) (2a); rac-Me2Si(thi)2, thi = (η5-tetrahydroindenyl), (2b)) is presented. Both complexes undergo selective thermal C-H activation at the 7-position of the ansa-cyclopentadienyl ligand to produce a new type of "tucked-in" zirconocene system, 3a and 3b, that possesses a η3-propargyl/allenyl ligand. Both types of complexes react with carbonyl compounds, producing enynes in the case of 2a and 2b, as well as η1-allenyl complexes for 3a and 3b. Computational analysis of the structure and bonding of 2a and 3a reveals significant differences to a previously described related Ti complex. All complexes were fully characterised, including X-ray crystallography and experimental results were supported by DFT analysis.
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Affiliation(s)
- Xinzhe Shi
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Sihan Li
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Melanie Reiß
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Anke Spannenberg
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Str. 29a 18059 Rostock Germany
| | | | - Fabian Reiß
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Torsten Beweries
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Str. 29a 18059 Rostock Germany
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Suzuki N, Ban S, Mochizuki A, Ito S. Reactions of five-membered zirconacycloalkynes and zirconacycloallenes with Cp 2Zr(H)Cl; formal hydrogenation by metal hydrides. Dalton Trans 2021; 50:16265-16272. [PMID: 34730157 DOI: 10.1039/d1dt03313a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reactions of five-membered zirconacycloalkynes and zirconacyloallenes (1-zirconacyclopent-3-ynes and 1-zirconacyclopenta-2,3-dienes) with an excess of Cp2Zr(H)Cl, known as the Schwartz reagent, were studied. Both reactions gave five-membered zirconacycloalkenes, 1-zirconacyclopent-3-enes without subsequent work-up such as protonolysis and hydrogenolysis. The product was identical to the zirconocene-diene complex that was prepared from Cp2Zr(n-Bu)2 (Negishi reagent) and the corresponding 1,4-disubstituted 1,3-dienes. These results indicate that formal hydrogenation by metal hydride took place. The use of diisobutylaluminum hydride or 9-borabicyclo[3.3.1]nonane also gave the same product, albeit in lower yields. The reactions starting from deuterated compounds suggested that double hydrozirconation followed by elimination of a dinuclear zirconium complex resulted in the hydrogenated products.
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Affiliation(s)
- Noriyuki Suzuki
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan.
| | - Sayaka Ban
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan.
| | - Ayari Mochizuki
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan.
| | - Saki Ito
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan.
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Abstract
Due to the linear property around an acetylenic carbon, the introduction of such an atom to a small cycle would result in high ring strain. Currently, the smallest isolated rings are five-membered, including metallacycloalkynes and metallapentalynes. Both types contain at least one unusual small bond angle around the acetylenic carbon, thus exhibiting abnormal reactivities. This feature article gives a comprehensive overview on these two kind complexes. The synthesis and reactivities are extensively described, the source of stability is presented, and the future prospect is discussed. The article aims to provide a better development for the chemical diversity of five-membered metallacycloalkynes and metallapentalynes.
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Reiß F, Reiß M, Spannenberg A, Jiao H, Hollmann D, Arndt P, Rosenthal U, Beweries T. Titanocene Silylpropyne Complexes: Promising Intermediates en route to a Four-Membered 1-Metallacyclobuta-2,3-diene? Chemistry 2017; 23:14158-14162. [PMID: 28846172 DOI: 10.1002/chem.201703444] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Indexed: 11/10/2022]
Abstract
Coordination of the alkyl-substituted alkynes Me3 SiC2 CH2 R (1: R=SiMe3 ; 2: R=N(SiMe3 )2 ) to titanocene centres [Cp'2 Ti] (Cp'=Cp, Cp*) yields stable alkyne complexes of the type Cp'2 Ti(η2 -Me3 SiC2 CH2 R) (3: Cp'=Cp, R=SiMe3 ; 5: Cp'=Cp, R=N(SiMe3 )2 ; 6: Cp'=Cp*, R=SiMe3 ) that are not prone to alkyne/allene isomerisation. When reacting alkyne 2 with Cp*2 TiCl2 and Mg formation of the complex Cp*2 Ti(III)(η3 -Me3 SiC2 CH2 ) (7) which displays a propargylic unit coordinated to the TiIII centre takes place. All complexes were fully characterised, the molecular structures for 5, 6, and 7 are discussed.
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Affiliation(s)
- Fabian Reiß
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Melanie Reiß
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Anke Spannenberg
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Haijun Jiao
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Dirk Hollmann
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Perdita Arndt
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Uwe Rosenthal
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Torsten Beweries
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
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Suzuki N, Nishimura K, Ohara N, Nishiura M, Masuyama Y. Studies on the mechanism for stereoisomerization of 1-zirconacyclopent-3-yne compounds. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2011.10.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kaleta K, Ruhmann M, Theilmann O, Beweries T, Roy S, Arndt P, Villinger A, Jemmis ED, Schulz A, Rosenthal U. Reactions of Group 4 Metallocene Alkyne Complexes with Carbodiimides: Experimental and Theoretical Studies of the Structure and Bonding of Five-Membered Hetero-Metallacycloallenes. J Am Chem Soc 2011; 133:5463-73. [DOI: 10.1021/ja111479j] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Katharina Kaleta
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, D-18059 Rostock, Germany
| | - Martin Ruhmann
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, D-18059 Rostock, Germany
- Abteilung Anorganische Chemie, Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, D-18059 Rostock, Germany
| | - Oliver Theilmann
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, D-18059 Rostock, Germany
- Abteilung Anorganische Chemie, Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, D-18059 Rostock, Germany
| | - Torsten Beweries
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, D-18059 Rostock, Germany
| | - Subhendu Roy
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Perdita Arndt
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, D-18059 Rostock, Germany
| | - Alexander Villinger
- Abteilung Anorganische Chemie, Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, D-18059 Rostock, Germany
| | - Eluvathingal D. Jemmis
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
- Indian Institute of Science Education and Research Thiruvananthapuram, CET campus, Thiruvananthapuram 695016, India
| | - Axel Schulz
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, D-18059 Rostock, Germany
- Abteilung Anorganische Chemie, Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, D-18059 Rostock, Germany
| | - Uwe Rosenthal
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, D-18059 Rostock, Germany
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Suzuki N, Hashizume D. Five-membered metallacycloalkynes formed from group 4 metals and [n]cumulene (n=3,5) ligands. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.12.016] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Ugolotti J, Kehr G, Fröhlich R, Grimme S, Erker G. Nitrile insertion into a boryl-substituted five-membered zirconacycloallenoid: unexpected formation of a zwitterionic boratirane product. Chem Commun (Camb) 2009:6572-3. [PMID: 19865653 DOI: 10.1039/b915924j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nitrile insertion into a zirconacycloallenoid complex leads to the formation of a seven-membered ring product with an attached boratirane unit.
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Affiliation(s)
- Juri Ugolotti
- Organisch-Chemisches Institut der Universität, Corrensstrasse 40, Münster, Germany
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Beweries T, Fischer C, Peitz S, Burlakov VV, Arndt P, Baumann W, Spannenberg A, Heller D, Rosenthal U. Combination of spectroscopic methods: in situ NMR and UV/Vis measurements to understand the formation of group 4 metallacyclopentanes from the corresponding metallacyclopropenes. J Am Chem Soc 2009; 131:4463-9. [PMID: 19275148 DOI: 10.1021/ja809368s] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
By reaction of the dichloride rac-(ebthi)HfCl(2) [ebthi = 1,2-ethylene-1,1'-bis(eta(5)-tetrahydroindenyl)] with lithium in the presence of bis(trimethylsilyl)acetylene, the hafnacyclopropene rac-(ebthi)Hf(eta(2)-Me(3)SiC(2)SiMe(3)) (1-Hf) was obtained. The reaction of the blue-green complex 1-Hf with an excess of ethylene at room temperature leads by insertion of the olefin to the yellow-green hafnacyclopentene 2-Hf which is only stable in solution and eliminates the alkyne at 100 degrees C under ethylene to form the corresponding yellow hafnacyclopentane 3-Hf, which was characterized by X-ray crystal structure analysis. The reaction of 1-Hf to give stepwise via 2-Hf the complex 3-Hf was investigated in detail and compared to the formation and stability of the corresponding zirconacyclopropene 1-Zr, zirconacyclopentene 2-Zr, and zirconacyclopentane 3-Zr. Moreover, the reaction of the titanocene alkyne complex 1-Ti with ethylene was studied. For investigating the reaction behavior of the alkyne complexes 1-M, NMR spectroscopy was used and the results were compared with UV/vis spectroscopy, suggesting the existence of a bis-pi-complex prior to the formation of the hafnacyclopentene 2-Hf.
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Affiliation(s)
- Torsten Beweries
- Leibniz-Institut fur Katalyse e. V. an der Universitat Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
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10
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Beweries T, Burlakov VV, Arndt P, Baumann W, Spannenberg A, Rosenthal U. Synthesis of Hafnacyclopentanes from Hafnocene Alkyne Complexes: Influence of Styrene Substituents on the C–C Coupling Regioselectivity. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900117] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Torsten Beweries
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51‐176
| | - Vladimir V. Burlakov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov St. 28, 117813 Moscow, Russia
| | - Perdita Arndt
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51‐176
| | - Wolfgang Baumann
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51‐176
| | - Anke Spannenberg
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51‐176
| | - Uwe Rosenthal
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51‐176
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Ugolotti J, Kehr G, Fröhlich R, Grimme S, Erker G. Five-Membered Zirconacycloallenoids: Synthesis and Characterization of Members of a Unique Class of Internally Metal-Stabilized Bent Allenoid Compounds. J Am Chem Soc 2009; 131:1996-2007. [DOI: 10.1021/ja8084302] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Juri Ugolotti
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Roland Fröhlich
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Stefan Grimme
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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Affiliation(s)
- Noriyuki Suzuki
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University
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Suzuki N, Hashizume D, Koshino H, Chihara T. Transformation of a 1‐Zirconacyclopent‐3‐yne, a Five‐Membered Cycloalkyne, into a 1‐Zirconacyclopent‐3‐ene and Formal “1‐Zirconacyclopenta‐2,3‐dienes”. Angew Chem Int Ed Engl 2008; 47:5198-202. [DOI: 10.1002/anie.200800739] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Suzuki N, Hashizume D, Koshino H, Chihara T. Transformation of a 1‐Zirconacyclopent‐3‐yne, a Five‐Membered Cycloalkyne, into a 1‐Zirconacyclopent‐3‐ene and Formal “1‐Zirconacyclopenta‐2,3‐dienes”. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200800739] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Fu P, Snapper ML, Hoveyda AH. Catalytic Asymmetric Alkylations of Ketoimines. Enantioselective Synthesis of N-Substituted Quaternary Carbon Stereogenic Centers by Zr-Catalyzed Additions of Dialkylzinc Reagents to Aryl-, Alkyl-, and Trifluoroalkyl-Substituted Ketoimines. J Am Chem Soc 2008; 130:5530-41. [DOI: 10.1021/ja8001343] [Citation(s) in RCA: 167] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peng Fu
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467
| | - Marc L. Snapper
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467
| | - Amir H. Hoveyda
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467
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Suzuki N, Watanabe T, Hirose T, Chihara T. Nucleophilic reactivity of 1-zirconacyclopent-3-ynes: Carbon–carbon bond formation with aldehydes. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.07.039] [Citation(s) in RCA: 8] [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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Bach MA, Beweries T, Burlakov VV, Arndt P, Baumann W, Spannenberg A, Rosenthal U. Migratory Insertion of an Isocyanide into 1-Zirconacyclopent-3-ynes. Organometallics 2007. [DOI: 10.1021/om700324k] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marc A. Bach
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Torsten Beweries
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Vladimir V. Burlakov
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Perdita Arndt
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Wolfgang Baumann
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Anke Spannenberg
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Uwe Rosenthal
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
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Rosenthal U, Burlakov VV, Bach MA, Beweries T. Five-membered metallacycles of titanium and zirconium--attractive compounds for organometallic chemistry and catalysis. Chem Soc Rev 2007; 36:719-28. [PMID: 17471397 DOI: 10.1039/b605734a] [Citation(s) in RCA: 168] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In these days a renaissance of metallacycles as an increasingly important class of organometallic compounds for synthetic and catalytic applications is evident, making such very attractive for a plethora of investigations. Titanocene and zirconocene bis(trimethylsilyl)acetylene complexes, regarded as three-membered metallacycles (1-metallacyclopropenes), present a rich chemistry towards unsaturated molecules. By elimination of the alkyne these complexes form by reaction with unsaturated compounds five-membered titana- and zirconacycles, all of which are relevant to stoichiometric and catalytic C-C coupling and cleavage reactions of unsaturated molecules.
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Affiliation(s)
- Uwe Rosenthal
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Str. 29a, Germany.
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Beweries T, Bach MA, Burlakov VV, Arndt P, Baumann W, Spannenberg A, Rosenthal U. Synthesis of ansa-Dimethylsilanediyl−dicyclopentadienyl− zirconacyclopent-3-yne, Me2Si(η5-C5H4)2Zr(η4-H2C4H2), and Its Reactions with Ni(0) and B(C6F5)3. Organometallics 2006. [DOI: 10.1021/om0608760] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Torsten Beweries
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Marc A. Bach
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Vladimir V. Burlakov
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Perdita Arndt
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Wolfgang Baumann
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Anke Spannenberg
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Uwe Rosenthal
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
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Arndt P, Jäger-Fiedler U, Klahn M, Baumann W, Spannenberg A, Burlakov VV, Rosenthal U. Die Bildung von Zirconocenfluoriden – keine Desaktivierung in der Olefinpolymerisation mit den Kontaktionenpaar-Katalysatoren [Cp′2ZrR]+[RB(C6F5)3]−. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600361] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Arndt P, Jäger-Fiedler U, Klahn M, Baumann W, Spannenberg A, Burlakov VV, Rosenthal U. Formation of Zirconocene Fluoro Complexes: No Deactivation in the Polymerization of Olefins by the Contact-Ion-Pair Catalysts [Cp′2ZrR]+[RB(C6F5)3]−. Angew Chem Int Ed Engl 2006; 45:4195-8. [PMID: 16703643 DOI: 10.1002/anie.200600361] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Perdita Arndt
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany.
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