ICCAS OpenIR
2-(1H-2-Benzimidazolyl)-6-(1-(arylimino)ethyl)pyridyl Iron(II) and Cobalt(II) Dichlorides: Syntheses, Characterizations, and Catalytic Behaviors toward Ethylene Reactivity
Xiao, Liwei1,2; Gao, Rong2; Zhang, Min2; Li, Yan2; Cao, Xiaoping1; Sun, Wen-Hua1,2
2009-04-13
Source PublicationORGANOMETALLICS
ISSN0276-7333
Volume28Issue:7Pages:2225-2233
AbstractA series of tridentate N<^>N<^>N iron(II) and cobalt(II) dichloride complexes bearing 2-(1H-2-benzimidazolyl)-6-(1 -(arylimino)ethyl)pyridines were synthesized and characterized by elemental and spectroscopic analyses. Single-crystal X-ray diffraction studies of representative examples of the cobalt and iron complexes confirm distorted bipyramidal geometry around the metal center. Upon coordination of a methanol solvent molecule, a geometry change to distorted octahedral was observed. The steric and electronic effects on catalytic activity are evaluated for different substituents in the arylimino part of the ligand: Me, Et, (i)Pr, Cl, and Br in ortho- and Me and H in para-position. On treatment with methylaluminoxane (MAO) or modified MAO (MMAO), the iron(II) complexes exhibited good activities of up to 10(6) . mol(-1)(Fe) . h(-1) for ethylene oligomerization and moderate activities for polymerization, while cobalt(II) complexes showed moderate activities for ethylene dimerization. The best activities were observed with iron complexes with bulky (i)Pr groups in the aryl moiety. In comparison to the analogues containing the 2-(1-alkyl-2-benzimidazolyl)-6-(1-(arylimino)ethyl)pyridines, the iron complexes bearing 2-(1H-2-benzimidazolyl)-6-(1-(arylimino)ethyl)pyridines showed the best activity toward ethylene reactivity.
DOI10.1021/om801141n
Indexed BySCI ; IC
Language英语
WOS IDWOS:000264932700035
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:101[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/66022
Collection中国科学院化学研究所
Corresponding AuthorCao, Xiaoping
Affiliation1.Lanzhou Univ, State Key Lab Appl Organ Chem, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China
2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Engn Plast, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Liwei,Gao, Rong,Zhang, Min,et al. 2-(1H-2-Benzimidazolyl)-6-(1-(arylimino)ethyl)pyridyl Iron(II) and Cobalt(II) Dichlorides: Syntheses, Characterizations, and Catalytic Behaviors toward Ethylene Reactivity[J]. ORGANOMETALLICS,2009,28(7):2225-2233.
APA Xiao, Liwei,Gao, Rong,Zhang, Min,Li, Yan,Cao, Xiaoping,&Sun, Wen-Hua.(2009).2-(1H-2-Benzimidazolyl)-6-(1-(arylimino)ethyl)pyridyl Iron(II) and Cobalt(II) Dichlorides: Syntheses, Characterizations, and Catalytic Behaviors toward Ethylene Reactivity.ORGANOMETALLICS,28(7),2225-2233.
MLA Xiao, Liwei,et al."2-(1H-2-Benzimidazolyl)-6-(1-(arylimino)ethyl)pyridyl Iron(II) and Cobalt(II) Dichlorides: Syntheses, Characterizations, and Catalytic Behaviors toward Ethylene Reactivity".ORGANOMETALLICS 28.7(2009):2225-2233.
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