نتایج جستجو برای: heterocyclic ligand

تعداد نتایج: 116213  

2016
Maitham H. Majeed Ola F. Wendt

The title compound, [PdCl2(C11H9N)(C13H14N2)], represents a new class of palladium-based polymerizable monomer which could give a potentially catalytically active polymer. It was synthesized via transmetallation from the corresponding silver complex. The Pd(II) ion coordinates two Cl anions, one C atom from the N-heterocyclic carbene (NHC) ligand and one N atom from the 4-phenyl-pyridine ligand...

Journal: :Science China-chemistry 2021

The methylation of alcohols is great importance since a broad number bioactive and pharmaceutical contain methyl groups. Here, highly efficient ?-methylation primary secondary with methanol has been achieved by using bis-N-heterocyclic carbene iridium (bis-NHC-Ir) complexes. Broad substrate scope up to quantitative yields were at low catalyst loadings only hydrogen water as by-products. protoco...

Journal: :European Journal of Inorganic Chemistry 2021

Porphyrins and N-heterocyclic carbenes (NHCs) are both relevant ligands in the fields of coordination organometallic chemistry. Despite evident structural differences, porphyrins NHCs have a lot common such as their ability to form strong metal-ligand bonds use catalysis, materials science biomedicine. During last decade, several molecular systems combining NHC were reported literature. The pre...

Journal: :Dalton transactions 2016
Paul Shaw Alan R Kennedy David J Nelson

The synthesis and co-ordination chemistry of a new 'bulky yet flexible' N-heterocyclic carbene ("IPaul") is reported. This carbene has spatially-defined steric impact; steric maps show that two quadrants are very bulky while the other two are quite open. The electronic properties of this carbene are very similar to those of other 1,3-diarylimidazol-2-ylidenes. Copper, silver, iridium, and nicke...

Journal: :European Journal of Inorganic Chemistry 2021

We present the synthesis and characterization of six novel bidentate cyclometalated platinum(ii) complexes derived from saturated N-heterocyclic carbene precursors, namely 1-aryl-3-methyl-1H-4,5-dihydroimidazolium salts. The title compounds were then synthesized by a multi-step reaction, which includes an in situ generation silver complex, followed transmetalation to platinum subsequent introdu...

Journal: :Israel Journal of Chemistry 2023

The activation of small molecules by silylenes bearing unique electronic properties has been well established in the past few decades. Here, we disclose reactivity study acyclic imino(silyl)silylene 1 with an N-heterocyclic imine ligand (NHI) towards various molecules. Silylene undergoes facile gaseous like dihydrogen, ethylene, and carbon dioxide. While cycloaddition carbonyl compounds to was ...

Journal: :Journal of Organometallic Chemistry 2021

1,3-Di(benzyloxy)imidazol-2-ylidenes (or NOHCs) possess structures related to N-heterocyclic carbenes (NHCs), with potentially useful applications including the stabilization of metals. In order prepare NOHC metal complexes, a multi-step synthesis involving mechanochemistry, and making use ball-milling, was designed. A library unprecedented NHOC complexes were tested for their cytotoxic activit...

Journal: :Chemistry 2016
Juan Pablo Martínez Sai Vikrama Chaitanya Vummaleti Laura Falivene Steven P Nolan Luigi Cavallo Miquel Solà Albert Poater

Density functional theory calculations have been used to explore the potential of Ru-based complexes with 1,3-bis(2,4,6-trimethylphenyl)imidazolin-2-ylidene (SIMes) ligand backbone (A) being modified in silico by the insertion of a C60 molecule (B and C), as olefin metathesis catalysts. To this end, we investigated the olefin metathesis reaction catalyzed by complexes A, B, and C using ethylene...

Journal: :European Journal of Inorganic Chemistry 2023

The anionic diamido N-heterocyclic carbene 1 is used to prepare a series of linear as well trigonal, heteroleptic CuI complexes with small molecular ligands such pyridine derivatives or triphenylphosphine. A key role lies in the versatile precursor for these complexes, moisture- and air-stable 1D coordination polymer [1·Cu]n composed only NHC ligand CuI, that copper linearly coordinated by carb...

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