Efficient polymerization of acrylonitrile catalyzed by divalent lanthanide complex/ sodium phenolate systems |
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| Authors: | Yingming Yao Qi Shen Lilu Zhang |
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| Institution: | (1)Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006 ,China;(2)State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032 ,China |
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| Abstract: | Four divalent lanthanide complexes Sm(ArO)2 - (THF)4, Yb(ArO)2(THF)3, Eu(ArO)2(THF)3 (ArO = 2,6-di- tert-butyl-4-methylphenolate) and (ButCp)2Sm(THF)2 were synthesized. Their catalytic activities on the polymerization of acrylonitrile were studied. The catalytic activities were influenced by the central metal ions involved. The catalytic activities of these divalent lanthanide complexes can be greatly increased by adding NaOC6H2-2,6-But2-4-Me, NaOC6H4-4-But, or NaOC10H6-2-Me. The amount of additive has apparent effect on the catalytic activity, but the additive has no effect on the tacticity of the resulting polyacrylonitrile. |
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| Keywords: | lanthanide complexes sodium phenolate catalysis acry-lonitrlle polymerization |
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