Chromium Complexes Supported by Bidentate Thioether-Imine [N,S] Ligands: Synthesis and Ethylene Oligomerization Studies

2021 ◽  
Author(s):  
Jorge Luiz Sônego Milani ◽  
André Francisco Pivato Biajoli ◽  
Fernanda I Batista ◽  
Robson da Silva Oliboni ◽  
Osvaldo de Lazaro Casagrande
Keyword(s):  
General Formula ◽  
Ethylene Oligomerization ◽  
Chromium Complexes

A series of new Cr(III) complexes of general formula [Cr{N,S}(THF)Cl3] (2a, N,S = PhS-2-PhCH=N-tBu; 2b, N,S = PhS-2-PhCH=N-C6H4-4-OMe; 2c, N,S = PhS-2-PhCH=N-C6H5; 2d, N,S = tBuS-2-PhCH=N-C6H5) were prepared and characterized...

scholarly journals Synthesis, Characterization and Ethylene Oligomerization Studies of Chromium Complexes Bearing Imino-Furfural Ligands

2014 ◽  
Author(s):  
Ana H. D. P. S. Ulbrich ◽  
Jorge L. S. Milani ◽  
Paolo R. Livotto ◽  
Jean-François Carpentier ◽  
Osvaldo L. Casagrande Jr.
Keyword(s):  
Ethylene Oligomerization ◽  
Chromium Complexes

Catalytic Properties of Chromium Complexes Based on 1,2-Bis(diphenylphosphino)benzene in the Ethylene Oligomerization Reaction

2019 ◽  
Vol 59 (S1) ◽  
pp. S72-S87 ◽  
Author(s):  
D. N. Cheredilin ◽  
A. M. Sheloumov ◽  
A. A. Senin ◽  
G. A. Kozlova ◽  
V. V. Afanas’ev ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Ethylene Oligomerization ◽  
Chromium Complexes ◽  
Oligomerization Reaction

Chromium complexes based on thiophene-imine ligands for ethylene oligomerization

2019 ◽  
Vol 33 (3) ◽  
pp. e4697 ◽  
Author(s):  
Jorge Ferreira ◽  
Raquel Zilz ◽  
Igor S. Boeira ◽  
Sabrina M. da Silva ◽  
Adriana C.A. Casagrande ◽  
...  
Keyword(s):  
Ethylene Oligomerization ◽  
Chromium Complexes ◽  
Imine Ligands

scholarly journals Selective Ethylene Oligomerization with Chromium Complexes Bearing Pyridine–Phosphine Ligands: Influence of Ligand Structure on Catalytic Behavior

2014 ◽  
Vol 33 (20) ◽  
pp. 5749-5757 ◽  
Author(s):  
Yun Yang ◽  
Joanna Gurnham ◽  
Boping Liu ◽  
Robbert Duchateau ◽  
Sandro Gambarotta ◽  
...  
Keyword(s):  
Phosphine Ligands ◽  
Ethylene Oligomerization ◽  
Chromium Complexes ◽  
Catalytic Behavior ◽  
Ligand Structure

Novel Dendritic PNP Chromium Complexes: Synthesis, Characterization, and Performance on Ethylene Oligomerization

2017 ◽  
Vol 100 (12) ◽  
pp. e1700162 ◽  
Author(s):  
Jun Wang ◽  
Rui Gao ◽  
Na Zhang ◽  
Xiangkun Tan ◽  
Libo Wang ◽  
...  
Keyword(s):  
Ethylene Oligomerization ◽  
Chromium Complexes ◽  
And Performance

Ethylene Oligomerization by Ni(II) Complex Based on Peptide

2014 ◽  
Vol 989-994 ◽  
pp. 727-730
Author(s):  
Wei Bai ◽  
Chen Gang Cao ◽  
Hai Xiang Pei ◽  
Kai Hui Hu ◽  
Hui Zhou ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
General Formula ◽  
Reaction Temperature ◽  
Ethylene Oligomerization ◽  
Ethylene Pressure

A kind of peptide based Ni (II) complexes (general formula [ZN=C(An)-C(An)=NZ](NiBr2)2, Z=(4-NHR-3,5-C6H2(CH3)2)2CH(4-C6H5), R=dipeptide, An=acenaphthenequinone) has been synthesized. Ethylene oligomerizations were carried out by using those complexes in combination with ethyl aluminium sesquichloride (EAS) and produced olefin . The effects of important parameters such as temperature and EAS concentration. on the catalytic activity and the distribution of resulting oligomer were investigated. under the conditions of employing toluene as solvent, a reaction temperature of 50°C and an ethylene pressure of 1.0 MPa..

scholarly journals Ethylene oligomerization promoted by chromium complexes bearing pyrrolide–imine–amine/ether tridentate ligands

2015 ◽  
Vol 44 (36) ◽  
pp. 16073-16080 ◽  
Author(s):  
A. C. Pinheiro ◽  
T. Roisnel ◽  
E. Kirillov ◽  
J.-F. Carpentier ◽  
Osvaldo L. Casagrande
Keyword(s):  
Ethylene Oligomerization ◽  
Slight Variation ◽  
Chromium Complexes ◽  
Tridentate Ligands ◽  
Catalytic Behavior

Chromium complexes bearing pyrrolide–imino-amine/ether tridentate ligands have been synthesized and their catalytic behavior in ethylene oligomerization has been investigated. Drastic changes in selectivity have been observed upon slight variation of the MAO-to-Cr ratio.

Synthesis and application of chromium complexes bearing hyperbranched PNP ligands in the ethylene oligomerization

2020 ◽  
Vol 34 (11) ◽  
Author(s):  
Cuiqin Li ◽  
Dan Li ◽  
Fengfeng Wang ◽  
Yuxin Gao ◽  
Jin Huang ◽  
...  
Keyword(s):  
Ethylene Oligomerization ◽  
Chromium Complexes
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