Loading...
Please wait, while we are loading the content...
Syntheses, characterization and ethylene polymerization of half-sandwich group IV metal complexes with tridentate [O,N,S] ligands
| Content Provider | Semantic Scholar |
|---|---|
| Author | Qiao, Ya-Lin Hu, Ping Jin, Guo-Xin |
| Copyright Year | 2013 |
| Abstract | A series of half-sandwich group IV metal complexes with tridentate monoanionic phenoxy-imine arylsulfide [O−NS] ligand [2-But4-Me-6-((2-(SC6H5)C6H4N=CHC6H2O)]− (La) and dianionic phenoxy-amine arylsulfide [O−N−S] ligand [2-But4-Me-6-((2-(SC6H5)C6H4N-CH2C6H2O)]2− (Lb) have been synthesized and characterized. Lb was obtained easily in high yield by reduction of ligand La with excess LiAlH4 in cool diethyl ether. Half-sandwich Group IV metal complexes CpTi[O−NS]Cl2 (1a), CpZr[O−NS]Cl2 (1b), CpTi[O−N−S]Cl (2a), CpZr[O−N−S]Cl (2b) and Cp*Zr[O−N−S]Cl (2c) were synthesized by the reactions of La and Lb with CpTiCl3, CpZrCl3 and Cp*ZrCl3, and characterized by IR, 1H-NMR, 13C-NMR and elemental analysis. In addition, an X-ray structure analysis was performed on ligand Lb. The title Group IV half-sandwich bearing tridentate [O,N,S] ligands show good catalytic activities for ethylene polymerization in the presence of methylaluminoxane (MAO) as co-catalyst up to 1.58 × 107 g-PE·mol-Zr−1·−1. The good catalytic activities can be maintained even at high temperatures such as 100 °C exhibiting the excellent thermal stability for these half-sandwich metal pre-catalysts. |
| Starting Page | 760 |
| Ending Page | 768 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s10118-013-1265-0 |
| Volume Number | 31 |
| Alternate Webpage(s) | http://www.meplab.fudan.edu.cn/d/file/infonet/assays/2014-04-24/361c89ea9af78115424ea3f5cbd5381a.pdf |
| Alternate Webpage(s) | https://doi.org/10.1007/s10118-013-1265-0 |
| Journal | Chinese Journal of Polymer Science |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
