期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 696, 期 13, 页码 2477-2481出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2011.03.027
关键词
Organometallic; N-heterocyclic carbene; Titanium; Zirconium; Complex; Polymerization
资金
- King Abdullah University of Science and Technology (KAUST) [K-C1-019-12]
- King Fahd University of Petroleum and Minerals (KFUPM)
- NSF [CHE-0639094]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0809418] Funding Source: National Science Foundation
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. (C) 2011 Elsevier B.V. All rights reserved.
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