scholarly journals Mononuclear ruthenium compounds bearing N-donor and N-heterocyclic carbene ligands: structure and oxidative catalysis

2017 ◽  
Vol 46 (9) ◽  
pp. 2829-2843 ◽  
Author(s):  
Hai-Jie Liu ◽  
Marcos Gil-Sepulcre ◽  
Laia Francàs ◽  
Pau Nolis ◽  
Teodor Parella ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Carbene Ligands ◽  
Ruthenium Compounds ◽  
Imidazole Ligands ◽  
Oxidative Catalysis

Oxidative catalytic properties of RuII–N5C complexes containing N-carbene phthalazine-imidazole ligands.

scholarly journals Bi- and trinuclear copper(I) complexes of 1,2,3-triazole-tethered NHC ligands: synthesis, structure, and catalytic properties

2016 ◽  
Vol 12 ◽  
pp. 863-873 ◽  
Author(s):  
Shaojin Gu ◽  
Jiehao Du ◽  
Jingjing Huang ◽  
Huan Xia ◽  
Ling Yang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Copper Complexes ◽  
Catalytic Properties ◽  
Polynuclear Complexes ◽  
Carbene Ligands ◽  
Efficient Catalyst ◽  
X Ray ◽  
X Ray Crystallography ◽  
Air Atmosphere ◽  
Highly Active

A series of copper complexes (3–6) stabilized by 1,2,3-triazole-tethered N-heterocyclic carbene ligands have been prepared via simple reaction of imidazolium salts with copper powder in good yields. The structures of bi- and trinuclear copper complexes were fully characterized by NMR, elemental analysis (EA), and X-ray crystallography. In particular, [Cu2(L2)2](PF6)2 (3) and [Cu2(L3)2](PF6)2 (4) were dinuclear copper complexes. Complexes [Cu3(L4)2](PF6)3 (5) and [Cu3(L5)2](PF6)3 (6) consist of a triangular Cu3 core. These structures vary depending on the imidazolium backbone and N substituents. The copper–NHC complexes tested are highly active for the Cu-catalyzed azide–alkyne cycloaddition (CuAAC) reaction in an air atmosphere at room temperature in a CH3CN solution. Complex 4 is the most efficient catalyst among these polynuclear complexes in an air atmosphere at room temperature.

Polystyrene4mmobilised imidazole ligands; metal complexes and catalytic properties

1977 ◽  
Vol 3 (1-3) ◽  
pp. 47-50 ◽  
Author(s):  
F.B. Hulsbergen ◽  
J. Manassen ◽  
J. Reedijk ◽  
J.A. Welleman
Keyword(s):  
Metal Complexes ◽  
Catalytic Properties ◽  
Imidazole Ligands

Carbene Complexes of Rhodium and Iridium from Tripodal N-Heterocyclic Carbene Ligands:  Synthesis and Catalytic Properties

2004 ◽  
Vol 43 (6) ◽  
pp. 2213-2219 ◽  
Author(s):  
Elena Mas-Marzá ◽  
Macarena Poyatos ◽  
Mercedes Sanaú ◽  
Eduardo Peris
Keyword(s):  
Catalytic Properties ◽  
Carbene Ligands ◽  
Carbene Complexes

Synthesis and Catalytic Properties of Rhodium(I) and Copper(I) Complexes Bearing Dipyrido-AnnulatedN-Heterocyclic Carbene Ligands

2008 ◽  
Vol 27 (7) ◽  
pp. 1561-1568 ◽  
Author(s):  
Michael Nonnenmacher ◽  
Doris Kunz ◽  
Frank Rominger
Keyword(s):  
Catalytic Properties ◽  
Carbene Ligands

scholarly journals Tailoring graphene-supported Ru nanoparticles by functionalization with pyrene-tagged N-heterocyclic carbenes

2022 ◽  
Author(s):  
Adrián García-Zaragoza ◽  
Christian Cerezo-Navarrete ◽  
Andres Mollar-Cuni ◽  
Pascual Oña-Burgos ◽  
Jose A. Mata ◽  
...  
Keyword(s):  
Metal Surface ◽  
Catalytic Properties ◽  
Heterocyclic Carbenes ◽  
Ruthenium Nanoparticles ◽  
Carbene Ligands ◽  
Ru Nanoparticles

The catalytic properties of graphene-supported ruthenium nanoparticles (Ru@rGO) have been finely tuned by modifying their metal surface with pyrene-tagged N-heterocyclic-carbene ligands (pyr-IMes). The nature and interaction modes of the pyr-IMes...

scholarly journals Polyaromatic N-heterocyclic carbene ligands and π-stacking. Catalytic consequences

2016 ◽  
Vol 52 (34) ◽  
pp. 5777-5787 ◽  
Author(s):  
Eduardo Peris
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Catalytic Properties ◽  
Important Influence ◽  
Stacking Interactions ◽  
Carbene Ligands ◽  
Π Stacking

This article highlights how π-stacking interactions have an important influence on the catalytic properties of transition metal complexes decorated with rigid polyaromatic ligands.

Microstructure and reactivity of small metal particles: The role of Ce additives

1992 ◽  
Vol 50 (1) ◽  
pp. 318-319
Author(s):  
L.D. Schmidt ◽  
K. R. Krause ◽  
J. M. Schwartz ◽  
X. Chu
Keyword(s):  
Atmospheric Pressure ◽  
Noble Metals ◽  
Mixed Oxides ◽  
Catalytic Properties ◽  
Chemical Shifts ◽  
Catalytic Converter ◽  
Structural Evolution ◽  
Single Particles ◽  
Small Metal Particles

The evolution of microstructures of 10- to 100-Å diameter particles of Rh and Pt on SiO2 and Al2O3 following treatment in reducing, oxidizing, and reacting conditions have been characterized by TEM. We are able to transfer particles repeatedly between microscope and a reactor furnace so that the structural evolution of single particles can be examined following treatments in gases at atmospheric pressure. We are especially interested in the role of Ce additives on noble metals such as Pt and Rh. These systems are crucial in the automotive catalytic converter, and rare earths can significantly modify catalytic properties in many reactions. In particular, we are concerned with the oxidation state of Ce and its role in formation of mixed oxides with metals or with the support. For this we employ EELS in TEM, a technique uniquely suited to detect chemical shifts with ∼30Å resolution.

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