Pyridine–oxazoline and quinoline–oxazoline ligated cobalt complexes: Synthesis, characterization, and 1,3-butadiene polymerization behaviors

2015 ◽  
Vol 435 ◽  
pp. 305-312 ◽  
Author(s):  
Jun Guo ◽  
Heng Liu ◽  
Jifu Bi ◽  
Chunyu Zhang ◽  
Hexin Zhang ◽  
...  
Keyword(s):  
Cobalt Complexes ◽  
Butadiene Polymerization

Synthesis, characterization and 1,3-butadiene polymerization behaviors of cobalt complexes bearing 2-pyrazolyl-substituted 1,10-phenanthroline ligands

2013 ◽  
Vol 27 (4) ◽  
pp. 245-252 ◽  
Author(s):  
Baolin Wang ◽  
Dirong Gong ◽  
Jifu Bi ◽  
Quanquan Dai ◽  
Chunyu Zhang ◽  
...  
Keyword(s):  
Cobalt Complexes ◽  
Butadiene Polymerization ◽  
Phenanthroline Ligands

scholarly journals Synthesis of mixed-ligand cobalt complexes and their applications in high cis-1,4-selective butadiene polymerization

2015 ◽  
Vol 436 ◽  
pp. 132-138 ◽  
Author(s):  
Wen Liu ◽  
Weijing Pan ◽  
Peng Wang ◽  
Wei Li ◽  
Jingshan Mu ◽  
...  
Keyword(s):  
Cobalt Complexes ◽  
Mixed Ligand ◽  
Butadiene Polymerization

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.

scholarly journals Structural, Magnetic, and Electrochemical Characterization of Iron(III) and Cobalt Complexes with Penta‐N 3 O 2 ‐dentate Ligands

2021 ◽  
Vol 2021 (15) ◽  
pp. 1498-1504
Author(s):  
Dominik Natke ◽  
Annika Preiss ◽  
Stephen Klimke ◽  
Takuya Shiga ◽  
Roman Boca ◽  
...  
Keyword(s):  
Cobalt Complexes ◽  
Electrochemical Characterization

One-pot synthesis of cobalt complexes with 2,6-bis(arylimino)phenoxyl/phenthioxyl ligands and catalysis on isoprene polymerization

2021 ◽  
Vol 50 (15) ◽  
pp. 5218-5225
Author(s):  
Xue-Meng Chen ◽  
Li-Cheng Huang ◽  
Wei Gao
Keyword(s):  
Mixed Valence ◽  
Cobalt Complexes ◽  
One Pot ◽  
One Pot Synthesis ◽  
Isoprene Polymerization

Several cobalt complexes supported by 2,6-bis(arylimino)phenoxyl/phenthioxyl ligands κ2N,X-Ar[NXN]CoCl(THF) were synthesized by direct oxygen(sulfur) insertion into the C–Co bond of the mixed-valence cobalt complexes {κ2C,N,η6-Ar[NCN]Co-κN-CoCl(μ-Cl)}2.

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