| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 가을 (10/09 ~ 10/10, 일산킨텍스) |
| 권호 |
33권 2호 |
| 발표분야 |
고분자 합성 |
| 제목 |
Group IV half metallocene complexes bearing bidentate pyridine-alkoxide ligands and ethylene polymerizations thereby |
| 초록 |
Lithium aggregates promoted efficient metallation of phenylpyridines and thus stabilized phenylpyridyllithium were used for the halogen free α-substitution of pyridyl ring to end up with the required Ph-pyCAr2OH pyridine-alcohol ligands. Selective pyridine ring lithiation of 2-phenylpyridine, α to nitrogen, opens a straight forward access to synthesize their derivatives as pyCAr2OH type pyridine alcohol ligands of the type pyCAr2OH. This on reaction with Cp*MCl3 generated metal complexes of the type (pyCAr2O)M(Cl2)Cp*, where M= Ti and Zr. The complexes were found active towards ethylene polymerization giving very linear polyethylene when they were activated with methylalumoxane. Zirconium complexes were found more active than the titanium counterparts under the conditions studied. |
| 저자 |
디박, 하창식, 김일
|
| 소속 |
부산대 |
| 키워드 |
Ethylene polymerization; titanium complexes; linear polyethylene
|
| E-Mail |
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