ICCAS OpenIR
Synthesis, structure, magnetic and catalytic properties of new dinuclear chromium(III) complexes with oxazoline alcoholate ligands
Jie, Suyun1,2,3; Pattacini, Roberto1; Rogez, Guillaume4; Loose, Claudia5; Kortus, Jens5; Braunstein, Pierre1
2009
Source PublicationDALTON TRANSACTIONS
ISSN1477-9226
Issue1Pages:97-105
AbstractThe dinuclear chromium complexes [Cr-2(N,O)(3)Cl-3] (6) (N,O = 4,4-dimethyl-2-oxazolylmethanolate), [Cr-2(N,O-Me2)(2)(EtOH)(2)Cl-4] (7) and [Cr-2(N,O-Me2)(2)(H2O)(2)Cl-4] (8) (N,O-Me2 = 4,4-dimethyl-2-oxazolyldimethylmethanolate) have been prepared and characterized, including by single-crystal X-ray diffraction. Complex 6 is unsymmetrical, with two chloride ligands terminally bound to one Cr atom, whereas 7 and 8 (in 8 center dot C4H8O) which contain two molecules of coordinated ethanol or water, respectively, are centrosymmetric. These chromium complexes are paramagnetic, and the magnetic properties of 6 and 7 in the solid state correspond to antiferromagnetic behaviour, which was confirmed by DFT calculations of their electronic structures. Complexes 6-8 were evaluated in the catalytic oligomerization and/or polymerization of ethylene with different aluminium-based cocatalysts, and MMAO proved to be the most effective one. In the presence of MMAO, the influence of different reaction parameters, such as the Al/Cr molar ratio, reaction temperature and ethylene pressure, was investigated. Complex 7 showed the highest activity for ethylene polymerization at both 1 atm and 10 atm of ethylene pressure, up to 620 000 g mol(-1)(Cr) h(-1) in the latter case.
DOI10.1039/b809814j
Indexed BySCI
Language英语
WOS IDWOS:000264023700012
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/66062
Collection中国科学院化学研究所
Corresponding AuthorBraunstein, Pierre
Affiliation1.Univ Strasbourg, CNRS, Inst Chim, Chim Coordinat Lab,UMR 7177, F-67070 Strasbourg, France
2.Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
4.Grp Mat Inorgan, IPCMS UMR 7504, F-67034 Strasbourg 2, France
5.TU Bergakad Freiberg, Inst Theoret Phys, D-09599 Freiberg, Germany
Recommended Citation
GB/T 7714
Jie, Suyun,Pattacini, Roberto,Rogez, Guillaume,et al. Synthesis, structure, magnetic and catalytic properties of new dinuclear chromium(III) complexes with oxazoline alcoholate ligands[J]. DALTON TRANSACTIONS,2009(1):97-105.
APA Jie, Suyun,Pattacini, Roberto,Rogez, Guillaume,Loose, Claudia,Kortus, Jens,&Braunstein, Pierre.(2009).Synthesis, structure, magnetic and catalytic properties of new dinuclear chromium(III) complexes with oxazoline alcoholate ligands.DALTON TRANSACTIONS(1),97-105.
MLA Jie, Suyun,et al."Synthesis, structure, magnetic and catalytic properties of new dinuclear chromium(III) complexes with oxazoline alcoholate ligands".DALTON TRANSACTIONS .1(2009):97-105.
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