Bis-ligated Ti and Zr complexes of chelating N-heterocyclic carbenes

Handle URI:
http://hdl.handle.net/10754/594141
Title:
Bis-ligated Ti and Zr complexes of chelating N-heterocyclic carbenes
Authors:
El-Batta, Amer; Waltman, Andrew W.; Grubbs, Robert H.
Abstract:
In this communication we report the synthesis of novel titanium and zirconium complexes ligated by bidentate "salicylaldimine-like" N-heterocyclic carbenes (NHC). Double addition of the NHC chelate to either TiCl4(thf)2 or ZrCl4 forms bis-ligated organometallic fragments with a distorted octahedral geometry. These complexes are rare examples of group IV transition-metal NHC adducts. Preliminary catalytic tests demonstrate that in the presence of methylaluminoxane (MAO) these complexes are useful initiators for the polymerization of ethylene and the copolymerization of ethylene with norbornene and 1-octene. © 2011 Elsevier B.V. All rights reserved.
KAUST Department:
KAUST Center In Development at KFUPM
Citation:
El-Batta A, Waltman AW, Grubbs RH (2011) Bis-ligated Ti and Zr complexes of chelating N-heterocyclic carbenes. Journal of Organometallic Chemistry 696: 2477–2481. Available: http://dx.doi.org/10.1016/j.jorganchem.2011.03.027.
Publisher:
Elsevier BV
Journal:
Journal of Organometallic Chemistry
Issue Date:
Jul-2011
DOI:
10.1016/j.jorganchem.2011.03.027
Type:
Article
ISSN:
0022-328X
Sponsors:
This publication was based on work supported by Award No. K-C1-019-12 made by King Abdullah University of Science and Technology (KAUST). The support of King Fahd University of Petroleum and Minerals (KFUPM) is also highly appreciated. We would like to thank Dr. Vincent Lavallo (Caltech) for helpful discussion and technical support, Larry Henling and Mike Day (Caltech) for X-ray crystallographic analysis, Lester McIntosh (Rohm and Haas) for assistance with olefin polymerizations and polymer analysis, and Albemarle Corporation for the generous gift of MAO. The Bruker KAPPA APEX II X-ray diffractometer was purchased via an NSF Chemistry Research Instrumentation and Facilities: Multi-User award to the California Institute of Technology, CHE-0639094.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorEl-Batta, Ameren
dc.contributor.authorWaltman, Andrew W.en
dc.contributor.authorGrubbs, Robert H.en
dc.date.accessioned2016-01-19T13:22:31Zen
dc.date.available2016-01-19T13:22:31Zen
dc.date.issued2011-07en
dc.identifier.citationEl-Batta A, Waltman AW, Grubbs RH (2011) Bis-ligated Ti and Zr complexes of chelating N-heterocyclic carbenes. Journal of Organometallic Chemistry 696: 2477–2481. Available: http://dx.doi.org/10.1016/j.jorganchem.2011.03.027.en
dc.identifier.issn0022-328Xen
dc.identifier.doi10.1016/j.jorganchem.2011.03.027en
dc.identifier.urihttp://hdl.handle.net/10754/594141en
dc.description.abstractIn this communication we report the synthesis of novel titanium and zirconium complexes ligated by bidentate "salicylaldimine-like" N-heterocyclic carbenes (NHC). Double addition of the NHC chelate to either TiCl4(thf)2 or ZrCl4 forms bis-ligated organometallic fragments with a distorted octahedral geometry. These complexes are rare examples of group IV transition-metal NHC adducts. Preliminary catalytic tests demonstrate that in the presence of methylaluminoxane (MAO) these complexes are useful initiators for the polymerization of ethylene and the copolymerization of ethylene with norbornene and 1-octene. © 2011 Elsevier B.V. All rights reserved.en
dc.description.sponsorshipThis publication was based on work supported by Award No. K-C1-019-12 made by King Abdullah University of Science and Technology (KAUST). The support of King Fahd University of Petroleum and Minerals (KFUPM) is also highly appreciated. We would like to thank Dr. Vincent Lavallo (Caltech) for helpful discussion and technical support, Larry Henling and Mike Day (Caltech) for X-ray crystallographic analysis, Lester McIntosh (Rohm and Haas) for assistance with olefin polymerizations and polymer analysis, and Albemarle Corporation for the generous gift of MAO. The Bruker KAPPA APEX II X-ray diffractometer was purchased via an NSF Chemistry Research Instrumentation and Facilities: Multi-User award to the California Institute of Technology, CHE-0639094.en
dc.publisherElsevier BVen
dc.subjectComplexen
dc.subjectN-heterocyclic carbeneen
dc.subjectOrganometallicen
dc.subjectPolymerizationen
dc.subjectTitaniumen
dc.subjectZirconiumen
dc.titleBis-ligated Ti and Zr complexes of chelating N-heterocyclic carbenesen
dc.typeArticleen
dc.contributor.departmentKAUST Center In Development at KFUPMen
dc.identifier.journalJournal of Organometallic Chemistryen
dc.contributor.institutionArnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, United Statesen
kaust.authorEl-Batta, Ameren
kaust.authorGrubbs, Robert H.en
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