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Novel heteroligated titanium complexes with fluorinated salicylaldiminato and beta-enaminoketonato ligands: synthesis, characterization and catalytic behavior in vinyl addition polymerization of norbornene
Long, Ying-Yun1,2; Ye, Wei-Ping1; Tao, Ping1,2; Li, Yue-Sheng1
2011
Source PublicationDALTON TRANSACTIONS
ISSN1477-9226
Volume40Issue:7Pages:1610-1618
AbstractA series of heteroligated (salicylaldiminato)(beta-enaminoketonato)titanium complexes of the general formula [3-Bu-t-2-OC6H3CH=N(C6F5)][PhN=C(CF3)CHC(R)O]TiCl2 (3a: R=Ph, 3b: R=C6H4Ph(p), 3c: R=C6H4Ph(o), 3d: R = 1-naphthyl, 3e: R = C6H4F2(2,6), 3f: R = C6H4Cl2(2,5), 3g: R=C6F4(2,3,5,6)OMe(4))were synthesized. The structure of complexes 3d, 3f-g were determined by single crystal X-ray diffraction analysis. The X-ray crystallographic analysis indicated these complexes adopted a distorted octahedral geometry around the titanium center. Upon activation with modified methylaluminoxane, complexes 3a-g exhibited moderate to good catalytic activity for norbornene (NB) vinyl addition polymerization, producing moderate molecular weight polynorbornenes under mild conditions. The introduction of electron-withdrawing groups can greatly enhance the catalytic activity. Significantly, the heteroligated titanium complexes displayed greatly improved activity for vinyl addition polymerization of NB compared to homoligated counterparts, which may stem from the suitable combinations of electronic and steric effects.
DOI10.1039/c0dt01225d
Indexed BySCI
Language英语
WOS IDWOS:000286767100022
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/72942
Collection中国科学院化学研究所
Corresponding AuthorLi, Yue-Sheng
Affiliation1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Grad Sch, Changchun Branch, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Long, Ying-Yun,Ye, Wei-Ping,Tao, Ping,et al. Novel heteroligated titanium complexes with fluorinated salicylaldiminato and beta-enaminoketonato ligands: synthesis, characterization and catalytic behavior in vinyl addition polymerization of norbornene[J]. DALTON TRANSACTIONS,2011,40(7):1610-1618.
APA Long, Ying-Yun,Ye, Wei-Ping,Tao, Ping,&Li, Yue-Sheng.(2011).Novel heteroligated titanium complexes with fluorinated salicylaldiminato and beta-enaminoketonato ligands: synthesis, characterization and catalytic behavior in vinyl addition polymerization of norbornene.DALTON TRANSACTIONS,40(7),1610-1618.
MLA Long, Ying-Yun,et al."Novel heteroligated titanium complexes with fluorinated salicylaldiminato and beta-enaminoketonato ligands: synthesis, characterization and catalytic behavior in vinyl addition polymerization of norbornene".DALTON TRANSACTIONS 40.7(2011):1610-1618.
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