Use of the phenanthrene-based lithium initiator in the anionic polymerization of methyl methacrylate
โ Scribed by Z. Hruska; B. Vuillemin; G. Riess
- Publisher
- Springer
- Year
- 1994
- Tongue
- English
- Weight
- 213 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0170-0839
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## Abstract Anionicโcoordinative polymerization of methyl methacrylate (MMA) was carried out in the presence of new bimetallic initiators based on lithium alkylnickelates and alkylpalladates in tetrahydrofuran, at โ78ยฐC. Wellโdefined poly(methyl methacrylate), PMMA, with molecular weights increasin
stable than 12. Structural reasons for this tendency can be found from the X-ray structure analyses of 9, 13, and 16. In these structures the 0-H ... 0 distances between the phenolate oxygen atoms and the aqua ligands are 2.72 (9), 2.70 (13), and 2.68 A (16). The 0 ... 0 distances within one triangu