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POSS-NEODYMIUM COMPLEX{[(i-C_4H_9)_7(Si_7O_(12))Nd]_4NaCl}AS PRECURSOR FOR POLYMERIZATION OF ISOPRENE
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作者 孙维林 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2009年第4期597-600,共4页
The tetrameric neodymium-silsesquioxane cage complex,{[(i-C_4H_9)_7(Si_7O_(12))Nd])4NaCl},was prepared and used as precursor for the polymerization of isoprene.When activated by AlEt_3 in the presence of TMSCl,this PO... The tetrameric neodymium-silsesquioxane cage complex,{[(i-C_4H_9)_7(Si_7O_(12))Nd])4NaCl},was prepared and used as precursor for the polymerization of isoprene.When activated by AlEt_3 in the presence of TMSCl,this POSS-Nd complex (POSS=polyhedral oligomeric silsesquioxane) shows a moderate activity for the polymerization,and the effects of different ratios of Al/Nd,Cl/Nd and time on the polymerization were investigated.Moreover,The POSS-Nd complex may serve as models for the silica-supported rare earth cat... 展开更多
关键词 incompletely condensed silsesquioxanes Metal silsesquioxanes POLYISOPRENE
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