Chelate Bis(imino)pyridine Cobalt Complexes:  Synthesis, Reduction, and Evidence for the Generation of Ethene Polymerization Catalysts by Li+Cation Activation

2005 ◽  
Vol 127 (40) ◽  
pp. 13955-13968 ◽  
Author(s):  
Nina Kleigrewe ◽  
Winfried Steffen ◽  
Tobias Blömker ◽  
Gerald Kehr ◽  
Roland Fröhlich ◽  
...  
Keyword(s):  
Cobalt Complexes ◽  
Polymerization Catalysts ◽  
Cation Activation ◽  
Ethene Polymerization

Mechanistic Study of the Calcination of Supported Chromium(III) Precursors for Ethene Polymerization Catalysts

1996 ◽  
Vol 100 (26) ◽  
pp. 11062-11066 ◽  
Author(s):  
V. J. Ruddick ◽  
P. W. Dyer ◽  
G. Bell ◽  
V. C. Gibson ◽  
J. P. S. Badyal
Keyword(s):  
Mechanistic Study ◽  
Polymerization Catalysts ◽  
Ethene Polymerization

Chromium(III) complexes bearing N,N-chelate ligands as ethene polymerization catalysts

1998 ◽  
pp. 1651-1652 ◽  
Author(s):  
Vernon C. Gibson ◽  
Claire Newton ◽  
Carl Redshaw ◽  
Gregory A. Solan ◽  
Andrew J. P. White ◽  
...  
Keyword(s):  
Polymerization Catalysts ◽  
Chelate Ligands ◽  
Ethene Polymerization

Highly Active Ethene Polymerization Catalysts with Unusual Imine Ligands

2005 ◽  
pp. 59-99 ◽  
Author(s):  
Gerrit A. Luinstra ◽  
Joachim Queisser ◽  
Benno Bildstein ◽  
Hans-Helmut Görtz ◽  
Christoph Amort ◽  
...  
Keyword(s):  
Polymerization Catalysts ◽  
Highly Active ◽  
Imine Ligands ◽  
Ethene Polymerization

Heterogenized iron(II) complexes as highly active ethene polymerization catalysts

2002 ◽  
Vol 179 (1-2) ◽  
pp. 155-173 ◽  
Author(s):  
Roland Schmidt ◽  
M.Bruce Welch ◽  
Syriac J Palackal ◽  
Helmut G Alt
Keyword(s):  
Polymerization Catalysts ◽  
Highly Active ◽  
Ethene Polymerization

Influence of the ligand structure of hafnocene polymerization catalysts: A theoretical study on chain termination reactions in ethene polymerization

2008 ◽  
Vol 693 (26) ◽  
pp. 3915-3922 ◽  
Author(s):  
Virve A. Karttunen ◽  
Mikko Linnolahti ◽  
Tapani A. Pakkanen ◽  
John R. Severn ◽  
Esa Kokko ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Chain Termination ◽  
Polymerization Catalysts ◽  
Ligand Structure ◽  
Ethene Polymerization

scholarly journals Bis(imino)-6,7-dihydro-5H-quinoline-cobalt complexes as highly active catalysts for the formation of vinyl-terminated PE waxes; steps towards inhibiting deactivation pathways through targeted ligand design

RSC Advances ◽  
2021 ◽  
Vol 11 (63) ◽  
pp. 39869-39878
Author(s):  
Mingyang Han ◽  
Zheng Zuo ◽  
Yanping Ma ◽  
Gregory A. Solan ◽  
Xinquan Hu ◽  
...  
Keyword(s):  
Ligand Design ◽  
Cobalt Complexes ◽  
Polymerization Catalysts ◽  
Highly Active

Narrowly dispersed PE waxes with high levels of vinyl functionality are produced using the depicted cobalt polymerization catalysts.

Cobaloxime-Based Double Complex Salts as Efficient and Versatile Catalysts for the Light-Driven Hydrogen Evolution Reaction

2020 ◽  
Author(s):  
Elisabeth Hofmeister ◽  
Jisoo Woo ◽  
Tobias Ullrich ◽  
Lydia Petermann ◽  
Kevin Hanus ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Systematic Study ◽  
Cobalt Complexes ◽  
Spectroscopic Studies ◽  
Double Complex ◽  
Double Complex Salts ◽  
Noble Metal Catalysts ◽  
Reduction Potentials ◽  
Complex Salts

Cobaloximes and their BF<sub>2</sub>-bridged analogues have emerged as promising non-noble metal catalysts for the photocatalytic hydrogen evolution reaction (HER). Herein we report the serendipitous discovery that double complex salts such as [Co(dmgh)<sub>2</sub>py<sub>2</sub>]<sup>+</sup>[Co(dmgBPh<sub>2</sub>)<sub>2</sub>Cl<sub>2</sub>]<sup>-</sup> can be obtained in good yields by treatment of commercially available [Co(dmgh)<sub>2</sub>pyCl] with triarylboranes. A systematic study on the use of such double complex salts and their single salts with simple counterions as photocatalysts revealed HER activities comparable or superior to existing cobaloxime catalysts and suggests ample opportunities for this compound class in catalyst/photosensitizer dyads and immobilized architectures. Preliminary electrochemical and spectroscopic studies indicate that one key advantage of these charged cobalt complexes is that the reduction potentials as well as the electrostatic interaction with charged photosensitizers can be tuned.

scholarly journals Paramagnetic solid-state NMR assignment and novel chemical conversion of the aldehyde group to dihydrogen ortho ester and hemiacetal moieties in copper(ii)- and cobalt(ii)-pyridinecarboxaldehyde complexes

RSC Advances ◽  
2021 ◽  
Vol 11 (33) ◽  
pp. 20216-20231
Author(s):  
Ayelén F. Crespi ◽  
Verónica M. Sánchez ◽  
Daniel Vega ◽  
Ana L. Pérez ◽  
Carlos D. Brondino ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Nmr Assignment ◽  
Cobalt Complexes ◽  
Chemical Conversion ◽  
Aldehyde Group ◽  
Ortho Ester ◽  
Complex Chemical ◽  
Chemical Functionalization

The complex chemical functionalization of the aldehyde group was elucidated in copper and cobalt complexes for 4- and 3-pyridinecarboxaldehyde ligands.

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