Phosphoraneiminato complexes of transition metals containing the NPR 3 À group are known in many coordinationchemical variations [1] as a result of varying bonding modes. In complexes with metal ions in low oxidation states (i, ii) the NPR 3 À group acts as m 3 -N bridging ligand, in medium oxidati
Rare earth metal initiated ring-opening polymerization of lactones
✍ Scribed by Seema Agarwal; Christian Mast; Kurt Dehnicke; Andreas Greiner
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 285 KB
- Volume
- 21
- Category
- Article
- ISSN
- 1022-1336
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📜 SIMILAR VOLUMES
The polymerization of caprolactone ( 1-CL) was initiated by yttrium triisopropoxide {Y(OP i r ) 3 }, bimetallic isopropoxide of yttrium and aluminum {Y[Al(OP i s ) 4 ] 3 }, yttrium and tin(II) {Y[Sn(OP i r ) 3 ] 3 }, and tin(II) and yttrium {Sn[Y(OP i r ) 4 ] 2 }, respectively. The polymerization wa
Ring-opening polymerization of -caprolactone (CL) has been initiated with rare earth phenyl compounds in both bulk and solution. These rare earth phenyl initiators can give polycaprolactone (PCL) with high yield and high molecular weight. The polymerization mechanism is through a coordination-deprot