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Abdelbagi ME, Alt HG. Unbridged 1- and 2-substituted bis(silylindenyl) zirconium(IV) and hafnium(IV) dichloride complexes as catalyst precursors for ethylene polymerization. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.07.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Guo Y, Fu Z, Xu J, Fan Z. Structure and properties of ethylene/propylene copolymers synthesized with bis(2,4,7-trimethylindenyl)zirconium dichloride activated by methyl aluminoxanes containing different amount of trimethylaluminum. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.06.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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3
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Simerly T, Milligan T, Mohseni R, Vasiliev A. Immobilization of ethylene bis-indenyl ligands on functionalized silica gel. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.07.089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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4
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Ahmadjo S, Arabi H, Nekoomanesh M, Mortazavi SMM, Zohuri G, Ahmadi M, Bolandi S. Indirect Synthesis of Bis(2-PhInd)ZrCl2 Metallocene Catalyst, Kinetic Study and Modeling of Ethylene Polymerization. Chem Eng Technol 2011. [DOI: 10.1002/ceat.201000272] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Mortazavi SMM, Arabi H, Zohuri G, Ahmadjo S, Nekoomanesh M, Ahmadi M. Copolymerization of ethylene/α-olefins using bis(2-phenylindenyl)zirconium dichloride metallocene catalyst: structural study of comonomer distribution. POLYM INT 2010. [DOI: 10.1002/pi.2859] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Möller AC, Blom R, Heyn RH, Swang O, Kopf J, Seraidaris T. A general one-pot synthesis for elusive 2-substituted indenes: does bis[2-(tert-butyl)indenyl]zirconium(IV) dichloride/MAO polymerise ethene? Dalton Trans 2006:2098-105. [PMID: 16625254 DOI: 10.1039/b516130d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Among the 2-substituted indenes, 2-trifluoroindene and 2-tert-butylindene are poorly or incompletely described in the open literature. We herein describe an efficient one-pot synthesis of these compounds as a variation of the Perkin reaction which allows us to refute an earlier claim that bis(2-tert-butylindenyl)zirconium(IV) dichloride (2a) will not polymerise ethene. In fact, 2a/MAO polymerises ethene to extremely high molecular weights. Extensive DFT calculations on the polymerisation mechanism revealed an unprecedented suppression of the otherwise predominant chain termination by beta-hydride transfer due to steric congestion of the active site.
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Affiliation(s)
- Andreas C Möller
- Department of Hydrcarbon Process Chemistry, SINTEF Materials and Chemistry, P.O. Boks 124 Blindern, N-0314 Oslo, Norway
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Alonso‐Moreno C, Antiñolo A, Carrillo‐Hermosilla F, Otero A, Rodríguez AM, Sancho J, Volkis V, Eisen M. Synthesis, Characterization, and Catalytic Properties of
ansa
‐Zirconocenes [Zr{1‐Me
2
Si(3‐η
5
‐C
9
H
5
R)
2
}Cl
2
] (R = Me,
n
Pr,
n
Bu, and Bz). Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200500845] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Carlos Alonso‐Moreno
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias Químicas, Universidad de Castilla‐La Mancha, Campus Universitario de Ciudad Real, 13071 Ciudad Real, Spain
| | - Antonio Antiñolo
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias Químicas, Universidad de Castilla‐La Mancha, Campus Universitario de Ciudad Real, 13071 Ciudad Real, Spain
| | - Fernando Carrillo‐Hermosilla
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias Químicas, Universidad de Castilla‐La Mancha, Campus Universitario de Ciudad Real, 13071 Ciudad Real, Spain
| | - Antonio Otero
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias Químicas, Universidad de Castilla‐La Mancha, Campus Universitario de Ciudad Real, 13071 Ciudad Real, Spain
| | - Ana M. Rodríguez
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias Químicas, Universidad de Castilla‐La Mancha, Campus Universitario de Ciudad Real, 13071 Ciudad Real, Spain
| | - José Sancho
- Centro Tecnológico Repsol‐YPF, Carretera de Extremadura, Km. 18, 28931 Móstoles, Spain
| | - Victoria Volkis
- Department of Chemistry and Institute of Catalysis Science and Technology Technion, Israel Institute of Technology, Haifa 32000, Israel
| | - Moris Eisen
- Department of Chemistry and Institute of Catalysis Science and Technology Technion, Israel Institute of Technology, Haifa 32000, Israel
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Yong Z, Xiao-Xia Y, Yi-Hua Y, Yan-Long Q, Ji-Ling H. Copolymerization of Ethylene/1-hexene and Polymerization of Propylene with Cp-indenyl Zirconium Complexes. CHINESE J CHEM 2005. [DOI: 10.1002/cjoc.200591081] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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10
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A Convenient Approach to 2-Arylindenes via Suzuki Coupling Reaction of 2-Indenylboronate with Aryl Bromides. B KOREAN CHEM SOC 2004. [DOI: 10.5012/bkcs.2004.25.1.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Möller AC, Heyn RH, Blom R, Swang O, Görbitz CH, Kopf J. Synthesis, structure, and ethene polymerisation catalysis of 1- or 2-silyl substituted bis[indenyl]zirconium(iv) dichlorides. Dalton Trans 2004:1578-89. [PMID: 15252607 DOI: 10.1039/b400505h] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The systematic syntheses of 1- and 2-substituted silylindenes, with a wide variety of substitution patterns on the silyl moiety, and their corresponding zirconocene dichlorides are presented. The rac- and meso-diastereomers of the 1-substituted zirconocene dichlorides can in most cases be separated. Instable zirconocenes were observed for certain substitution patterns. Two of the obtained zirconocene dichlorides, bis[2-(dimethylsilyl)indenyl]zirconium dichloride (4a) and bis[2-(trimethylsilyl)indenyl]zirconium dichloride (4b), were characterised by single crystal X-ray diffraction. On the basis of DFT results, the two compounds are geometrically similar, i.e. the additional methyl group on the silyl moiety only affects the conformational energy profile. Differences in their catalyst performance in the homopolymerisation studies with ethane are thus attributed to conformational control. For the remaining complexes, sterically less demanding silyl groups seem to be favoured with respect to the catalyst performance. All the 2-isomers have lower polymerisation activities than the unsubstituted bis[indenyl]zirconium dichloride/MAO system. Curiously, the rac-bis[1-(dimethylphenylsilyl)indenyl]zirconium dichloride/MAO system is found to be the most active catalyst in ethene homopolymerisations.
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Affiliation(s)
- Andreas C Möller
- Department of Hydrocarbon Process Chemistry, SINTEF Materials and Chemistry, P. O. Box 124, Blindern, N-0314 Oslo, Norway.
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Synthesis and characterization of planarly chiral nonbridged bis(1-R-indenyl) zirconium dichloride complexes and X-ray structure of rac-[(η5-C9H6-1-C(CH3)2o-C6H4OCH3)2ZrCl2]·THF. J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(02)01197-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Grimmer NE, Coville NJ, de Koning CB. Zirconium bis-indenyl compounds. The influence of substituents on the ethene polymerization behavior of 1- and 2-substituted (R-Ind)2ZrCl2/MAO catalysts. J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(01)01279-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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14
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Zirconium bis-indenyl compounds. Synthesis and X-ray crystallography study of 1- and 2-substituted bis(R-indenyl)zirconium dichloride metallocenes. J Organomet Chem 2000. [DOI: 10.1016/s0022-328x(00)00570-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Yoon JS, Lee DH, Park ES, Lee IM, Park DK, Jung SO. Copolymerization of ethylene/?-olefins over (2-MeInd)2ZrCl2/MAO and (2-BzInd)2ZrCl2/MAO systems. J Appl Polym Sci 2000. [DOI: 10.1002/(sici)1097-4628(20000214)75:7<928::aid-app9>3.0.co;2-p] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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