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- Title
POSS-NEODYMIUM COMPLEX {[(i-C<sub>4</sub>H<sub>9</sub>)<sub>7</sub>(Si<sub>7</sub>O<sub>12</sub>)Nd]<sub>4</sub>NaCl} AS PRECURSOR FOR POLYMERIZATION OF ISOPRENE.
- Authors
Yu, Jian-fang; Wu, Guang-ming; Huang, Jing; Sun, Wei-lin; Shen, Zhi-quan
- Abstract
The tetrameric neodymium-silsesquioxane cage complex, {[(i-C4H9)7(Si7O12)Nd]4NaCl}, was prepared and used as precursor for the polymerization of isoprene. When activated by AlEt3 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 catalyst, and a simplified surface model was also proposed.
- Subjects
POLYMERIZATION; ISOPRENE; RARE earth metals; SILICON compounds; CHEMICAL reactions
- Publication
Chinese Journal of Polymer Science (World Scientific Publishing Company), 2009, Vol 27, Issue 4, p597
- ISSN
0256-7679
- Publication type
Article
- DOI
10.1142/S025676790900428X