期刊
INORGANICA CHIMICA ACTA
卷 360, 期 2, 页码 523-528出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2006.07.093
关键词
chromium salen complexes; copolymerization of CO2/epoxides
Hydroxo-bridged dimers of [(acacen)CrOH](2) (acacen = N,N'-bis(t-butylacetylacetone)-1,2-ethylenediimine) and [(salen)CrOH](2) have been isolated from hydrolysis of the corresponding (acacen)CrCl and (salen)CrOMe derivatives. Structural studies reveal the octahedral coordination around the chromium centers to be distorted. The (acacen)CrCl complex in the presence of cocatalysts PCy3 or [PPN][Cl] is an effective catalyst for the production of polycarbonate from cyclohexene oxide and carbon dioxide, albeit less so than its salen analog. (c) 2006 Elsevier B.V. All rights reserved.
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