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(ArO)TiR3 complexes for highly syndiospecific styrene polymerization
Alternative Title(ArO)TiR3配合物用于高间规专一性的苯乙烯聚合反应研究
Xu CJ(许崇杰)1; Chen Z(陈州)1; Ji G(季刚)1; Sun XL(孙秀丽)1; Li JF(李军方)1; Tang Y(唐勇)1
2014
Source PublicationJ. Mol. Catal. A-Chem.
Volume383Pages:77-82
AbstractA kind of (ArO)TiR3 (AK) = 2,6-(R')(2)-4-methylphenolate, R' = Me, Bu-t, CH2SPh, CH2N(Pr-i)(2), CH2NPh2) complexes was synthesized and characterized. X-ray analysis of 6a and 7 shows that neither -CH2SPh (6a) nor CH2N(Pr-i)(2) group (7) coordinates to titanium. Large bond angles C(Ar)-O(1)-Ti(1) angel (152.9(2)degrees in 6a and 175.33 degrees in 7 indicate that the bond have partial sp-hybridized character. Upon treatment with modified methylaluminoxane (MMAO), the titanium complexes exhibit significant thermal stability, and prove useful as styrene syndiotactic polymerization catalysts. Comparisons between different complexes on the styrene polymerization were discussed. Steric instead of electronic properties at 2,6-positions of phenol affect the polymerization activity. (2-tert-Butyl)-4-methylphenoxytitanium(IV) chloride 5e was established the most efficient one. High activity (1.11 x 10(5) g sPS/mol(Ti) h) was achieved when styrene polymerization was carried out in the presence of 5e/MMAO at 130 degrees C for 2 h. (C) 2013 Elsevier B.V. All rights reserved.
Subject Area金属有机化学
DOI10.1016/j.molcata.2013.11.032
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Indexed BySCI
Language英语
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Document Type期刊论文
Identifierhttp://ir.sioc.ac.cn/handle/331003/39045
Collection金属有机化学国家重点实验室
Corresponding AuthorSun XL(孙秀丽)
Affiliation1.苏州大学
2.中科院上海有机化学研究所
Recommended Citation
GB/T 7714
Xu CJ,Chen Z,Ji G,et al. (ArO)TiR3 complexes for highly syndiospecific styrene polymerization[J]. J. Mol. Catal. A-Chem.,2014,383:77-82.
APA 许崇杰,陈州,季刚,孙秀丽,李军方,&唐勇.(2014).(ArO)TiR3 complexes for highly syndiospecific styrene polymerization.J. Mol. Catal. A-Chem.,383,77-82.
MLA 许崇杰,et al."(ArO)TiR3 complexes for highly syndiospecific styrene polymerization".J. Mol. Catal. A-Chem. 383(2014):77-82.
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