Monochloro non-bridged half-metallocene-type zirconium complexes containing phosphine oxide-(thio)phenolate chelating ligands as efficient ethylene polymerization catalysts
文献类型：期刊论文
| 作者 | Tang XY ; Wang YX ; Liu SR ; Liu JY ; Li YS |
| 刊名 | dalton transactions
 |
| 出版日期 | 2013 |
| 卷号 | 42期号:2页码:499-506 |
| 关键词 | ZIEGLER-NATTA POLYMERIZATION FOCK-SLATER CALCULATIONS OLEFIN POLYMERIZATION HYDROXYLAMINATO COMPLEXES MOLECULAR-STRUCTURES TITANIUM COMPLEXES SANDWICH COMPLEXES ARYLOXY COMPLEXES CRYSTAL-STRUCTURE METAL-COMPLEXES |
| ISSN号 | 1477-9226 |
| 通讯作者 | liu jy |
| 中文摘要 | a series of novel monochloro half-zirconocene complexes containing phosphine oxide-(thio)phenolate chelating ligands of the type, clcp'zr[x-2-r-1-4-r-2-6-(ph2p=o)c6h2](2) (cp' = c5h5, 2a: x = o, r-1 = ph, r-2 = h; 2b: x = o, r-1 = f, r-2 = h; 2c: x = o, r-1 = bu-t, r-2 = h; 2d: x = o, r-1 = r-2 = bu-t; 2e: x = o, r-1 = sime3, r-2 = h; 2f: x = s, r-1 = sime3, r-2 = h; cp' = c5me5, 2g: x = o, r-1 = sime3, r-2 = h), have been synthesized in high yields. these complexes were identified by h-1 {c-13} nmr and elemental analyses. structures for 2b, 2c and 2f were further confirmed by x-ray crystallography. structural characterization of these complexes reveals crowded environments around the zirconium. complexes 2b and 2c adopt six-coordinate, distorted octahedral geometry around the zirconium center, in which the equatorial positions are occupied by three oxygen atoms of two chelating phosphine oxide-bridged phenolate ligands and a chlorine atom. the cyclopentadienyl ring and one oxygen atom of the ligand are coordinated on the axial position. complex 2f also folds a six-coordinate, distorted octahedral geometry around the zr center, consisting of a cp-zr-o (in p=o) axis [177.16 degrees] and a distorted plane of two sulfur atoms and one oxygen atom of two chelating phosphine oxide-bridged thiophenolate ligands as well as a chlorine atom. when activated by modified methylaluminoxane (mmao), all the complexes exhibited high activities towards ethylene polymerization at high temperature (75 degrees c), giving high molecular weight polymers with unimodal molecular weight distribution. the formation of 14-electron, cationic metal alkyl species might come from the zr-o (in phenol ring) bond cleavage based on the dft calculations study. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000312219800026 |
| 公开日期 | 2014-04-18 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/50433]  |
| 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 | Tang XY,Wang YX,Liu SR,et al. Monochloro non-bridged half-metallocene-type zirconium complexes containing phosphine oxide-(thio)phenolate chelating ligands as efficient ethylene polymerization catalysts[J]. dalton transactions,2013,42(2):499-506. |
| APA | Tang XY,Wang YX,Liu SR,Liu JY,&Li YS.(2013).Monochloro non-bridged half-metallocene-type zirconium complexes containing phosphine oxide-(thio)phenolate chelating ligands as efficient ethylene polymerization catalysts.dalton transactions,42(2),499-506. |
| MLA | Tang XY,et al."Monochloro non-bridged half-metallocene-type zirconium complexes containing phosphine oxide-(thio)phenolate chelating ligands as efficient ethylene polymerization catalysts".dalton transactions 42.2(2013):499-506. |
入库方式： OAI收割
来源：长春应用化学研究所
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