Liquid coordination complexes: a new class of Lewis acids as safer alternatives to BF3 in synthesis of polyalphaolefins

2015 ◽  
Vol 17 (3) ◽  
pp. 1831-1841 ◽  
Author(s):  
James M. Hogg ◽  
Fergal Coleman ◽  
Albert Ferrer-Ugalde ◽  
Martin P. Atkins ◽  
Małgorzata Swadźba-Kwaśny
Keyword(s):  
Lewis Acids ◽  
Coordination Complexes ◽  
New Class ◽  
Competitive Process ◽  
Low Viscosity

Low-viscosity polyalphaolefins were synthesised using AlCl3-based liquid coordination complexes (LCCs), in a sustainable and economically competitive process.

A New Class of Lewis Acids

1967 ◽  
Vol 6 (7) ◽  
pp. 640-641
Author(s):  
F. Wessely
Keyword(s):  
Lewis Acids ◽  
New Class

Preparation and structures of coordination complexes of the very hard Lewis acids ZrF4 and HfF4

2012 ◽  
Vol 41 (40) ◽  
pp. 12548 ◽  
Author(s):  
Sophie L. Benjamin ◽  
William Levason ◽  
David Pugh ◽  
Gillian Reid ◽  
Wenjian Zhang
Keyword(s):  
Lewis Acids ◽  
Coordination Complexes

A one-pot pseudo nine-component isocyanide-based reaction: synthesis of a new class of zinc 1,5-disubstituted 1H-tetrazol-5-yl coordination complexes

2011 ◽  
Vol 52 (34) ◽  
pp. 4388-4391 ◽  
Author(s):  
Ahmad Shaabani ◽  
Mojtaba Mahyari ◽  
Mozhdeh Seyyedhamzeh ◽  
Sajjad Keshipour ◽  
Seik Weng Ng
Keyword(s):  
Coordination Complexes ◽  
Reaction Synthesis ◽  
One Pot ◽  
New Class

Coordination complexes of group (IV) halides. Preparation and infrared spectra of the complexes of group (IV) halides with α-cyanoacetamide as ligand

1967 ◽  
Vol 45 (2) ◽  
pp. 139-145 ◽  
Author(s):  
Sumer Chand Jain ◽  
Roland Rivest
Keyword(s):  
Physical Properties ◽  
Coordination Polymers ◽  
Infrared Spectra ◽  
Lewis Acids ◽  
Cyano Group ◽  
Coordination Complexes ◽  
Group Iv ◽  
Amide Group ◽  
Metal Atoms

Coordination complexes between α-cyanoacetamide as ligand and the group (IV) halides as Lewis acids have been prepared. In all these compounds the ligand has been found to be a bidentate, coordinating to two different metal atoms. The infrared results indicate coordination through the nitrogen of the cyano group and one of the donor atoms of the amide group, probably nitrogen. Some physical properties of the complexes strongly suggest that they are coordination polymers.

MESO-PROPYLENE-CO-ETHYLENE POLYOLEFIN RUBBER: VULCANIZATION AND COMPARISON TO AMORPHOUS STEREOISOMER RUBBER

2019 ◽  
Vol 92 (1) ◽  
pp. 43-50 ◽  
Author(s):  
Sudhin Datta ◽  
Abdelhadi Sahnoune
Keyword(s):  
Structural Feature ◽  
Tensile Deformation ◽  
Uniaxial Tensile ◽  
Similar Composition ◽  
New Class ◽  
Low Viscosity ◽  
Strain Induced Crystallization ◽  
Tear Properties ◽  
Induced Crystallization

ABSTRACT A new class of polyolefin rubbers containing a majority of propylene copolymerized with ethylene and a vulcanizable, unsymmetrical diene is described. The key structural feature of these rubbers is the presence of meso-propylene sequences, which leads to a small level of crystallinity, which is amplified on uniaxial tensile deformation. This strain induced crystallization leads to very remarkable tensile and tear properties in sulfur and resin vulcanized formulations, even for very low viscosity compounds. Isomeric rubbers of a similar composition but with irregular propylene sequences, which are and stay amorphous on extension, are unremarkable in their vulcanized properties.

Liquid coordination complexes as a new class of catalysts for the synthesis of highly reactive polyisobutylene

Polymer ◽  
2021 ◽  
pp. 123825
Author(s):  
Ivan A. Berezianko ◽  
Pavel A. Nikishau ◽  
Irina V. Vasilenko ◽  
Sergei V. Kostjuk
Keyword(s):  
Coordination Complexes ◽  
New Class ◽  
Highly Reactive Polyisobutylene

New Class of Phosphine Oxide Donor-Based Supramolecular Coordination Complexes from an in Situ Phosphine Oxidation Reaction or Phosphine Oxide Ligands

2013 ◽  
Vol 52 (18) ◽  
pp. 10217-10219 ◽  
Author(s):  
Bhaskaran Shankar ◽  
Palani Elumalai ◽  
Ramasamy Shanmugam ◽  
Virender Singh ◽  
Dhanraj T. Masram ◽  
...  
Keyword(s):  
Phosphine Oxide ◽  
Oxidation Reaction ◽  
Coordination Complexes ◽  
New Class ◽  
Supramolecular Coordination

Gold(I)-catalyzed formation of bridged and fused carbocycles

2013 ◽  
Vol 85 (6) ◽  
pp. 1161-1173 ◽  
Author(s):  
Francis Barabé ◽  
Patrick Levesque ◽  
Boubacar Sow ◽  
Gabriel Bellavance ◽  
Geneviève Bétournay ◽  
...  
Keyword(s):  
Coordination Chemistry ◽  
Homogeneous Catalysis ◽  
Lewis Acids ◽  
Scientific Community ◽  
The Other ◽  
Organic Transformations ◽  
Enol Ether ◽  
Triple Bonds ◽  
Competitive Process ◽  
Carbon Carbon Bonds

For many years, despite a rich coordination chemistry, gold (Au) was judged as being catalytically inactive for the formation of carbon–carbon bonds. In mid-1970, few reports demonstrated that Au salts could be very useful reagents to catalyze organic transformations. In recent years, homogeneous catalysis by Au has received considerable attention by the scientific community. It was shown that Au(I) or (III) catalysts are specific and more reactive than most of the other soft Lewis acids such as Hg(II), Cu(II), Pt(II), and Pd(II). Taking advantage of the affinity of cationic phosphine Au complexes to triple bonds, we conceived a Au(I)-catalyzed 6-endo-dig cyclization of cyclic enol ether to prepare bridged and fused bicyclic ketone. Keeping in mind that 5-exo-dig cyclizations can be a competitive process, we surveyed various Au(I) complexes.

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