Homogeneous Catalysis by Manganese-Based Pincer Complexes

2017 ◽  
Vol 2017 (30) ◽  
pp. 4344-4362 ◽  
Author(s):  
Marcel Garbe ◽  
Kathrin Junge ◽  
Matthias Beller
Keyword(s):  
Homogeneous Catalysis ◽  
Pincer Complexes

Homogeneous Catalysis by Cobalt and Manganese Pincer Complexes

ACS Catalysis ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 11435-11469 ◽  
Author(s):  
Arup Mukherjee ◽  
David Milstein
Keyword(s):  
Homogeneous Catalysis ◽  
Pincer Complexes

scholarly journals Reversible catalytic dehydrogenation of alcohols for energy storage

2015 ◽  
Vol 112 (6) ◽  
pp. 1687-1692 ◽  
Author(s):  
Peter J. Bonitatibus ◽  
Sumit Chakraborty ◽  
Mark D. Doherty ◽  
Oltea Siclovan ◽  
William D. Jones ◽  
...  
Keyword(s):  
Energy Storage ◽  
Fuel Cell ◽  
Homogeneous Catalysis ◽  
Partial Oxidation ◽  
Catalytic Reaction ◽  
Pincer Complexes ◽  
Catalytic Dehydrogenation ◽  
Secondary Alcohols ◽  
Iridium Complexes ◽  
Primary Alcohols

Reversibility of a dehydrogenation/hydrogenation catalytic reaction has been an elusive target for homogeneous catalysis. In this report, reversible acceptorless dehydrogenation of secondary alcohols and diols on iron pincer complexes and reversible oxidative dehydrogenation of primary alcohols/reduction of aldehydes with separate transfer of protons and electrons on iridium complexes are shown. This reactivity suggests a strategy for the development of reversible fuel cell electrocatalysts for partial oxidation (dehydrogenation) of hydroxyl-containing fuels.

scholarly journals Recent developments of iron pincer complexes for catalytic applications

2016 ◽  
Vol 3 (6) ◽  
pp. 741-765 ◽  
Author(s):  
Gerald Bauer ◽  
Xile Hu
Keyword(s):  
Homogeneous Catalysis ◽  
Pincer Complexes ◽  
Excellent Activity ◽  
Recent Developments ◽  
Catalytic Applications

Iron pincer complexes exhibit excellent activity in homogeneous catalysis.

Effect of Hydrated Metal Salts on the Coordination Product of Cobalt(II) halide and PNP Type Ligand, 2,6-bis(di-tertbutylphosphinomethyl) pyridine

2018 ◽  
Author(s):  
Tasneem Siddiquee ◽  
Abdul Goni
Keyword(s):  
Metal Salts ◽  
Molar Ratio ◽  
Pincer Complexes ◽  
Asymmetric Unit ◽  
X Ray Diffraction ◽  
Pincer Ligand ◽  
Tetrahedral Geometry ◽  
X Ray ◽  
Distorted Tetrahedral Geometry ◽  
Cobalt Center

Chemical treatment of CoX<sub>2</sub><b><sup>. </sup></b>6H<sub>2</sub>O (X = Cl, Br, I) with the potentially tridentate PNP pincer ligand 2,6-bis(di-<i>tert</i>-butylphosphinomethyl)pyridine in 1:1 molar ratio results in cobalt(II) halide-PNP pincer complexes. The effect of the hydrated metal source on molecular structure and geometry of the complexes was studied by single crystal X-ray diffraction analysis. The complexes are neutral and the cobalt center adopts a penta-coordinate system with potential atropisomerization. Within the unit cell there are two distinct molecules per asymmetric unit. One of the two phosphorus atoms in the PNP ligand was observed to be partially oxidized to phosphinoxide. Disorder in the structure reflects a mixture of square pyramidal and distorted tetrahedral geometry.

Phosphorus Containing Porous Organic Polymers: Synthetic Techniques and Applications in Organic Synthesis and Catalysis

2021 ◽  
Author(s):  
Pramod Kumar ◽  
Animesh Das ◽  
Biplab Maji
Keyword(s):  
Organic Synthesis ◽  
Homogeneous Catalysis ◽  
Heterogeneous Catalysts ◽  
Organic Polymer ◽  
Organic Polymers ◽  
Porous Organic Polymers ◽  
Porous Organic Polymer ◽  
Phosphorus Containing

The phosphorous-containing porous organic polymer is a trending material for the synthesis of heterogeneous catalysts. Decades of investigations have established phosphines as versatile ligands in homogeneous catalysis. Recently, phosphine-based heterogeneous...

Novel meta-Benzothiazole and Benzimidazole Functionalised POCOP-Ni(II) Pincer Complexes as Efficient Catalysts in the Production of Diarylketones.

2021 ◽  
Author(s):  
Antonio Aldair Castillo-García ◽  
González-Sebastián Lucero ◽  
Leticia Lomas-Romero ◽  
Simon Hernandez-Ortega ◽  
Ruben Alfredo Toscano ◽  
...  
Keyword(s):  
Pincer Complexes ◽  
Aryl Ring

The synthesis of four novel non-symmetric Ni(II)-POCOP pincer complexes meta-functionalized with either benzothiazole or benzimidazole at the central aryl ring is described. All complexes were fully characterised in solution by...

scholarly journals Robust and efficient hydrogenation of carbonyl compounds catalysed by mixed donor Mn(I) pincer complexes

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Wenjun Yang ◽  
Ivan Yu. Chernyshov ◽  
Robin K. A. van Schendel ◽  
Manuela Weber ◽  
Christian Müller ◽  
...  
Keyword(s):  
Noble Metal ◽  
Crucial Role ◽  
Carbonyl Compounds ◽  
Catalytic Performance ◽  
Hydrogen Atmosphere ◽  
Pincer Complexes ◽  
Catalyst Activation ◽  
Hydrogenation Catalysts ◽  
Induction Times

AbstractAny catalyst should be efficient and stable to be implemented in practice. This requirement is particularly valid for manganese hydrogenation catalysts. While representing a more sustainable alternative to conventional noble metal-based systems, manganese hydrogenation catalysts are prone to degrade under catalytic conditions once operation temperatures are high. Herein, we report a highly efficient Mn(I)-CNP pre-catalyst which gives rise to the excellent productivity (TOF° up to 41 000 h−1) and stability (TON up to 200 000) in hydrogenation catalysis. This system enables near-quantitative hydrogenation of ketones, imines, aldehydes and formate esters at the catalyst loadings as low as 5–200 p.p.m. Our analysis points to the crucial role of the catalyst activation step for the catalytic performance and stability of the system. While conventional activation employing alkoxide bases can ultimately provide catalytically competent species under hydrogen atmosphere, activation of Mn(I) pre-catalyst with hydride donor promoters, e.g. KHBEt3, dramatically improves catalytic performance of the system and eliminates induction times associated with slow catalyst activation.

scholarly journals Arene-Osmium(II) Complexes in Homogeneous Catalysis

Inorganics ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 55
Author(s):  
Pascale Crochet ◽  
Victorio Cadierno
Keyword(s):  
Homogeneous Catalysis ◽  
Review Article ◽  
Transfer Hydrogenation ◽  
Nitrile Hydration ◽  
Bond Forming ◽  
Catalytic Applications

Although the application of arene-osmium(II) complexes in homogeneous catalysis has been much less studied than that of their ruthenium analogues, different works have shown that, in some instances, a comparable or even superior effectiveness can be achieved with this particular class of compounds. This review article focuses on the catalytic applications of arene-osmium(II) complexes. Among others, transfer hydrogenation, hydrogenation, oxidation, and nitrile hydration reactions, as well as different C-C bond forming processes, are comprehensively discussed.

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