Synthesis and Characterization of Novel Half-Metallocene-Type Group IV Complexes Containing Phosphine Oxide-Phenolate Chelating Ligands and Their Application to Ethylene Polymerization
文献类型：期刊论文
| 作者 | Liu JY ; Liu SR ; Li BX ; Li YG ; Li YS |
| 刊名 | organometallics
 |
| 出版日期 | 2011 |
| 卷号 | 30期号:15页码:4052-4059 |
| 关键词 | MAO CATALYST SYSTEMS SYNDIOSPECIFIC STYRENE POLYMERIZATION ZIEGLER-NATTA POLYMERIZATION OLEFIN POLYMERIZATION CYCLOPENTADIENYL FRAGMENT HYDROXYLAMINATO COMPLEXES PROPENE POLYMERIZATION TITANIUM COMPLEXES ARYLOXY COMPLEXES COPOLYMERIZATION |
| ISSN号 | 0276-7333 |
| 通讯作者 | li ys |
| 中文摘要 | a series of novel half-metallocene-type group iv metal complexes containing phosphine oxide phenolate chelating ligands of type cpmcl2[o-2(1)-4r(2)-6(ph2p=o)c6h2] (cp = c5h5, m = ti, 2a: r-1 = r-2 = h; 2b: r-1 = ph, r-2 = h; 2c: r-1 = bu-t, r-2 = h; 2d: r-1 = r-2 = (bu)-b-t; m = zr, 3b: r-1 = ph, r-2 = h; 3c: r-1 = bu-t, r-2 = h; 3d, r-1 = r-2 = bu-t) have been synthesized in high yields (60-76%) from cpmcl3 (m = ti, zr) with 1.0 equiv of 2r(1)-4r(2)-6(ph2p=o)c6h2oh in thf and in the presence of triethylamine, and the complexes were identified by nair and mass spectra as well as elemental analysis. structures for 2a-d and 3d were further confirmed by x-ray crystallography. complexes 2a-d adopt a five-coordinate, distorted square-pyramidal geometry around the titanium center. complex 3d has a six-coordinate, distorted octahedral geometry around the zirconium center, in which the equatorial positions are occupied by oxygen atoms of the chelating phosphine oxide phenolate ligand and two chlorine atoms. the cyclopentadienyl ring and the oxygen atom of the thf molecule are coordinated on the axial position. when activated by modified methylaluminoxane, all complexes exhibited moderate to high activities toward ethylene polymerization, giving high molecular weight polymer with a unimodal molecular weight distribution. the substituents on ligands and the metal center as well as the reaction conditions have a profound effect on the polymerization. it should be noted that zirconium complexes 3b-d displayed notable ethylene polymerization activity even at high temperature (75 degrees c). moreover, using ph3cb(c6f5)(4)/i-bu3al in place of mmao as a cocatalyst, 3b-d also generate high molecular weight, polymer with high efficiency under the same conditions. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000293307600018 |
| 公开日期 | 2012-06-08 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/44413]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu JY,Liu SR,Li BX,et al. Synthesis and Characterization of Novel Half-Metallocene-Type Group IV Complexes Containing Phosphine Oxide-Phenolate Chelating Ligands and Their Application to Ethylene Polymerization[J]. organometallics,2011,30(15):4052-4059. |
| APA | Liu JY,Liu SR,Li BX,Li YG,&Li YS.(2011).Synthesis and Characterization of Novel Half-Metallocene-Type Group IV Complexes Containing Phosphine Oxide-Phenolate Chelating Ligands and Their Application to Ethylene Polymerization.organometallics,30(15),4052-4059. |
| MLA | Liu JY,et al."Synthesis and Characterization of Novel Half-Metallocene-Type Group IV Complexes Containing Phosphine Oxide-Phenolate Chelating Ligands and Their Application to Ethylene Polymerization".organometallics 30.15(2011):4052-4059. |
入库方式： OAI收割
来源：长春应用化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。