Ring‐opening polymerization of trimethylenecarbonate by the bridged diphenoxo ytterbium (II) complex |
| |
| Authors: | B Zhao X L Hu C R Lu |
| |
| Affiliation: | Key Laboratory of Organic Synthesis, Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, China |
| |
| Abstract: | A novel ytterbium (II) complex 2 supporting by a bridged bisphenolate ligand H2LOC4H7 (L = C4H7OCH2N(CH2‐2‐OC6H2‐3,5‐Bu )2) with a tetrahydrofuran donor on side‐arm was synthesized in high yield and characterized by elementary analysis, IR, 1H‐NMR, and 13C‐NMR. Ring‐opening polymerization of 1,3‐trimethylenecarbonate (TMC) was carried out using complex 2 and a known complex Me2NCH2CH2N(CH2‐2‐O‐3,5‐C6H2(But)2)2]Yb 1 as the initiators, respectively. It was found that both complexes 1 and 2 can alone initiate the ring‐opening polymerization of TMC, and complex 1 showed higher activity than complex 2 . The activity of both complexes 1 and 2 was found to be higher than that of monodentate phenoxo ytterbium (II) complex (2,6‐Bu ‐C6H3O)2Yb(THF)3. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011 |
| |
| Keywords: | trimethylenecarbonate bridged diphenoxo ytterbium (II) complex polymerization |
|
|
