Plastomeric-like polyethylenes achievable using thermally robust N,N '-nickel catalysts appended with electron withdrawing difluorobenzhydryl and nitro groups
文献类型：期刊论文
| 作者 | Zhang, RD; Wang, Z; Ma, YP; Solan, GA; Sun, Y; Sun, WH
|
| 刊名 | DALTON TRANSACTIONS
 |
| 出版日期 | 2019-02-07 |
| 卷号 | 48期号:5页码:1878-1891 |
| ISSN号 | 1477-9226 |
| DOI | 10.1039/c8dt04427a |
| 英文摘要 | A new set of five unsymmetrical N, N'-diiminoacenaphthenes, 1-[2,6-{(4-FC6H4)(2)CH}2-4-NO2C6H4N]-2-(ArN) C2C10H6 (Ar = 2,6-Me2C6H3 L1, 2,6-Et2C6H3 L2, 2,6-iPr(2)C(6)H(3) L3, 2,4,6-Me3C6H2 L4, 2,6-Et-2-4-MeC6H2 L5), have been synthesized and used to prepare their corresponding nickel(II) halide complexes, LNiBr2 (Ni1-Ni5) and LNiCl2 (Ni6-Ni10). The molecular structures of Ni-3(OH2) and Ni4 reveal distorted square pyramidal and tetrahedral geometries, respectively, while the 1H NMR spectra of all the nickel(II) (S = 1) complexes show broad paramagnetically shifted peaks. Upon activation with either methylaluminoxane (MAO) or ethylaluminum sesquichloride (Et3Al2Cl2, EASC), Ni1-Ni10 displayed very high activities for ethylene polymerization with the optimal performance being observed using 2,6-dimethylcontaining Ni1 in combination with EASC (1.66 x 107 g PE mol(-1) (Ni) h-1 at 50 degrees C) which produced high molecular weight plastomeric polyethylene (Mw = 3.93 x 10(5) g mol(-1), Tm = 70.6 degrees C) with narrow dispersity (Mw/Mn = 2.97). Moreover, Ni1/EASC showed good thermal stability by operating effectively at an industrially relevant 80 degrees C with a level of activity (6.01 x 106 g of PE mol(-1) (Ni) h(-1)) that exceeds previously disclosed N, N'-nickel catalysts under comparable reaction conditions. This improved thermal stability and activity has been ascribed to the combined effects imparted by the para-nitro and fluoride-substituted benzhydryl ortho-substituents. |
| 语种 | 英语 |
| WOS记录号 | WOS:000457554300033 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/41953]  |
| 专题 | 化学研究所_工程塑料实验室 |
| 作者单位 | 1.Solan, GA 2.Sun, WH (reprint author), Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing 100190, Peoples R China. 3.Solan, GA 4.Sun, WH (reprint author), Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China. 5.Sun, WH (reprint author), Univ Chinese Acad Sci, CAS Res Educ Ctr Excellence Mol Sci, Beijing 100049, Peoples R China. 6.Solan, GA (reprint author), Univ Leicester, Dept Chem, Univ Rd, Leicester LE1 7RH, Leics, England. 7.Sun, WH (reprint author), Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Gansu, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Zhang, RD,Wang, Z,Ma, YP,et al. Plastomeric-like polyethylenes achievable using thermally robust N,N '-nickel catalysts appended with electron withdrawing difluorobenzhydryl and nitro groups[J]. DALTON TRANSACTIONS,2019,48(5):1878-1891. |
| APA | Zhang, RD,Wang, Z,Ma, YP,Solan, GA,Sun, Y,&Sun, WH.(2019).Plastomeric-like polyethylenes achievable using thermally robust N,N '-nickel catalysts appended with electron withdrawing difluorobenzhydryl and nitro groups.DALTON TRANSACTIONS,48(5),1878-1891. |
| MLA | Zhang, RD,et al."Plastomeric-like polyethylenes achievable using thermally robust N,N '-nickel catalysts appended with electron withdrawing difluorobenzhydryl and nitro groups".DALTON TRANSACTIONS 48.5(2019):1878-1891. |
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来源：化学研究所
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