نتایج جستجو برای: imidazolium based salts
تعداد نتایج: 2959675 فیلتر نتایج به سال:
We report the synthesis of original imidazolium salts with tetraphenylborate anion and their use as precursors for boron, nitrogen co-doped carbon materials. In addition to benefic effet tetraphenylborate...
Benzoate-based room temperature ionic liquids (RTILs) have been synthesized with cations of varying structures. The thermal properties of these RTILs have been characterized to understand their structure–property relationship. A subset of these benzoate-RTILs was found to be capable of dissolving highly charged polysaccharides, glycosaminoglycans (GAGs) to an extent of 10 mg/ml while PF6 and BF...
The Ag(I) and hemilabile Pd(II) carbene complexes obtained from novel thioether-functionalized imidazolium salts synthesised in one-step illustrate the diversity of coordination modes of these new S, C(NHC) ligands.
Formation of anionic ditopic N-heterocyclic dicarbene having two linking phosphorus centers – one neutral and is presented, along with a first glimpse on the coordination chemistry bis(imidazolium) salts.
The formation of gas hydrates is a major issue during the operation oil and pipelines, because cause plugging, thereby disrupting normal flows. A solution to inject hydrate inhibitors such as ionic liquids. Contrary classical inhibitors, liquids act both thermodynamic anti-agglomerates. Imidazolium-based have been found efficient for inhibition CO2 CH4 hydrates. For hydrates, N-ethyl-N-methylmo...
A general approach for the synthesis of bis(imidazolium) dichloride salts from imidazoles and dichloroalkanes is reported. Typical limitations this reaction formation methylene-bridge...
This study reports the development of imidazolium-type anion exchange membranes (Im-AEMs) based on the functionalization of bromomethylated poly(2,6-dimethyl-1,4-phenylene oxide) (BPPO) using 1-methylimdazole. Aromatic polymers bearing bromomethyl, instead of chloromethyl, functional groups were employed as base materials to avoid complicated chloromethylation which require toxic reagents. H NM...
Mechanical forces induced by ball-milling agitation enabled the highly efficient and widely applicable synthesis of Cu–carbene complexes from N,N-diaryl-imidazolium salts and metallic copper. The required amount of gaseous dioxygen and insoluble copper could be reduced down to stoichiometric quantities, while reaction rates clearly outperformed those obtained in solution. Utilisation of Cu(0) a...
Since Forbes and Davis reported the design of a class of phosphoniumand imidazolium ion-based ionic liquids (e.g. 1, Fig. 1A) equipped with a pendant acidic sulfonic acid moiety, interest in Brønsted acidic ionic liquids (BAILs) has gathered considerable pace. These materials afford the practitioner the flexibility of a system which combines strong acidity with the traditional advantages associ...
A series of novel imidazolium salts bearing hydrophilic tetraethylene glycol (TEG) and/or hydrophobic long-chain alkyl (n-C12) functionalities, which are precursors for desired N-heterocyclic carbene (NHC) ligands, were synthesized and characterized. Rh(I)-NHC complexes were prepared in good yields by the silver carbene transfer method with NHC-Ag species derived from the imidazolium salts. The...
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