Synthesis, characterization and butadiene polymerization studies of cobalt(II) complexes bearing bisiminopyridine ligand
文献类型：期刊论文
| 作者 | Gong DR ; Wang BL ; Cai HG ; Zhang XQ ; Jiang LS |
| 刊名 | journal of organometallic chemistry
 |
| 出版日期 | 2011 |
| 卷号 | 696期号:8页码:1584-1590 |
| 关键词 | LINEAR ALPHA-OLEFINS 1 BIS(IMINO)ARYL NCN LIGAND 3-BUTADIENE CO-BASED CATALYST ETHYLENE POLYMERIZATION LIVING POLYMERIZATION MOLECULAR-WEIGHT METAL-COMPLEXES SELECTIVE POLYMERIZATION PHOSPHINE LIGAND |
| ISSN号 | 0022-328x |
| 通讯作者 | zhang xq |
| 中文摘要 | a series of 2,6-bis(imino)pyridyl co(ii) complexes of the general formulas [2,6-(arn=cme)(2)c(5)h(3)n]cocl(2) (ar = -c(6)h(5), 3a; 2-mec(6)h(4), 3b; 2-etc(6)h(4), 3c; 2-(i)prc(6)h(4), 3d; 2,6-(i)pr(2)c(6)h(3), 3e; 4-(i)prc(6)h(4), 3f; 4-fc(6)h(4), 3g; 4-cf(3)c(6)h(4), 3h; 2-fc(6)h(4), 3i; 2,6-f(2)c(6)h(3), 3j; 2-me-4-fc(6)h(3), 3k and 2,6-me(2)-4-fc(6)h(2), 3l) and [2,6-(arn=ch)(2)c(5)h(3)n]cocl(2) (ar = -c(6)h(5), 3m; 2-etc(6)h(4), 3n and 4-(i)prc(6)h(4), 3o) have been synthesized and characterized. the structures of new complexes 3a, 3f-3h and 3m-3o are further confirmed by x-ray crystallography. all complexes adopt distorted trigonal bipyramidal configuration with the equatorial plane formed by the pyridyl nitrogen atoms and the two chlorine atoms. in the complexes 3m and 3o, three aromatic rings are essentially coplanar, which is in sharp contrast to the other complexes, where three rings are almost orthogonal to each other. with methylaluminoxane (mao) as cocatalyst in toluene at room temperature, the complexes show moderate to high conversion (42-99%) in butadiene polymerization, producing polybutadiene with tunable cis-1,4 structure (77.5-97%) and controllable molecular weight and molecular weight distribution. the catalytic activity, selectivity as well as the molecular weight and molecular weight distribution of the resultant polymer are found to be dependent on the size and nature of substituents on iminoaryl rings and their positions located. by deliberately tuning the ligand structure, more efficient catalyst in terms of high activity and high selectivity can be obtained. (c) 2011 elsevier b. v. all rights reserved. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000289072300013 |
| 公开日期 | 2012-06-11 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/44704]  |
| 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 | Gong DR,Wang BL,Cai HG,et al. Synthesis, characterization and butadiene polymerization studies of cobalt(II) complexes bearing bisiminopyridine ligand[J]. journal of organometallic chemistry,2011,696(8):1584-1590. |
| APA | Gong DR,Wang BL,Cai HG,Zhang XQ,&Jiang LS.(2011).Synthesis, characterization and butadiene polymerization studies of cobalt(II) complexes bearing bisiminopyridine ligand.journal of organometallic chemistry,696(8),1584-1590. |
| MLA | Gong DR,et al."Synthesis, characterization and butadiene polymerization studies of cobalt(II) complexes bearing bisiminopyridine ligand".journal of organometallic chemistry 696.8(2011):1584-1590. |
入库方式： OAI收割
来源：长春应用化学研究所
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