A Quantum‐chemical Analysis on the Lewis Acidity of Diarylhalonium Ions
Sign Up to like & getrecommendations! Published in 2022 at "Chemphyschem"
DOI: 10.1002/cphc.202200634
Abstract: Abstract Cyclic diaryliodonium compounds like iodolium derivatives have increasingly found use as noncovalent Lewis acids in the last years. They are more stable toward nucleophilic substitution than acyclic systems and are markedly more Lewis acidic.… read more here.
Keywords: lewis acidity; analysis lewis; chemical analysis; acidity diarylhalonium ... See more keywords
Chemical reactivity of the frustrated Lewis pairs in borophosphines: a theoretical analysis of their Lewis acidity, Lewis basicity and Fukui function
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Molecular Modeling"
DOI: 10.1007/s00894-018-3776-7
Abstract: The chemical reactivity of a set of borophosphines of the general formula R2B-G-PY2, where G is the connector group between the Lewis acidic site, a borane group, and the Lewis basic site, a phosphine fragment,… read more here.
Keywords: lewis acidity; reactivity; lewis basicity; acidity lewis ... See more keywords
Improvement of furanic diether selectivity by adjusting Brønsted and Lewis acidity
Sign Up to like & getrecommendations! Published in 2018 at "Applied Catalysis A: General"
DOI: 10.1016/j.apcata.2018.07.013
Abstract: Abstract Furanic diethers are considered as one of potential biofuels or green solvents. 2,5-Bis(methoxymethyl)furan (BMMF), diether of 2,5-bis(hydroxymethyl)furan (BHMF) with methanol, is difficult to effectively synthesize in traditional homogeneous catalytic systems due to active groups… read more here.
Keywords: furanic diether; improvement furanic; lewis acidity; selectivity ... See more keywords
Lewis acidity controlled heme catalyst for lithium-oxygen battery
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DOI: 10.1016/j.ensm.2019.04.002
Abstract: Abstract Despite their high theoretical energy density, lithium-oxygen (Li−O2) batteries suffer from limited cyclability originating from poor charging efficiency. In an effort to overcome this critical issue, a variety of catalysts have been introduced, but… read more here.
Keywords: oxygen; catalyst; lewis acidity; lithium oxygen ... See more keywords
Controlling the activity of an immobilised molecular catalyst by Lewis acidity tuning of the support
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Catalysis"
DOI: 10.1016/j.jcat.2021.08.019
Abstract: Abstract The performance profile of a supported metallocene catalyst in slurry-phase ethylene polymerisation can be significantly enhanced by tuning the chemical composition of the support. By employing catalyst supports derived from zinc-containing layered double hydroxides… read more here.
Keywords: catalyst; lewis acidity; productivity; support ... See more keywords
Photophysical and Lewis acidic properties of triarylboranes with meta-substituted 2-R-o-carboranes
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Organometallic Chemistry"
DOI: 10.1016/j.jorganchem.2017.06.001
Abstract: Abstract Triarylboranes incorporating meta-substituted 2-R-o-carboranes (R = H, Me, iBu, Ph, 4-CF3C6F4) were prepared to investigate the effects of the meta-2-R-o-carborane on Lewis acidity. X-ray crystal structures revealed that the carboranyl C C bond distances increased with… read more here.
Keywords: substituted triarylboranes; meta substituted; lewis acidic; lewis acidity ... See more keywords
Increasing Lewis acidity in perchlorophenyl derivatives of antimony
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Organometallic Chemistry"
DOI: 10.1016/j.jorganchem.2019.06.033
Abstract: Abstract The improved synthesis of the homoleptic perchlorophenyl stibine (C 6 Cl 5 ) 3 Sb ( 1a ) has enabled us to obtain detailed spectroscopic and structural information. In contrast to the planar structure… read more here.
Keywords: increasing lewis; lewis acidity; perchlorophenyl derivatives; compound ... See more keywords
New insights into oxygen defects, Lewis acidity and catalytic activity of vanadia hybrid nanomaterials
Sign Up to like & getrecommendations! Published in 2018 at "Materials Letters"
DOI: 10.1016/j.matlet.2018.02.111
Abstract: Abstract Structural defects in both MCM–41 (Mobil Composition of Matter No. 41) framework and V2O5 nanocrystals and surface acid sites of the V2O5/MCM–41 hybrid nanomaterials were quantitatively determined. Oxygen defects were found to be related… read more here.
Keywords: oxygen; oxygen defects; hybrid nanomaterials; catalytic activity ... See more keywords
Influence of Lewis acidity and CaCl2 on the direct transformation of glucose to 5-hydroxymethylfurfural
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DOI: 10.1016/j.mcat.2021.111685
Abstract: Abstract Nb-Zr oxides were evaluated for glucose dehydration to 5-hydroxymethylfurfural. A linear relationship was found between the amount of acid sites and niobium content. Pure Nb2O5 showed the highest acid concentration and surface area and… read more here.
Keywords: influence lewis; lewis acidity; lewis acid; cacl2 ... See more keywords
Synthesis of Zr-containing BEC-type germanosilicate with high Lewis acidity
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DOI: 10.1016/j.micromeso.2016.11.023
Abstract: Abstract Zr-containing germanosilicates with BEC structure have been synthesized using three different procedures, involving i) direct treatment of parent Ge-BEC material with ZrOCl2 in 0.01 M HCl aqueous solution; ii) direct treatment with ZrOCl2 in DMSO;… read more here.
Keywords: treatment; bec; germanosilicate; lewis acidity ... See more keywords
CH Activation of Cationic Bismuth Amides: Heteroaromaticity, Derivatization, and Lewis Acidity.
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DOI: 10.1021/acs.inorgchem.1c02911
Abstract: Cationization of Bi(NPh2)3 has recently been reported to allow access to single- and double-CH activation reactions, followed by selective transformation of Bi-C into C-X functional groups (X = electrophile). Here we show that this approach… read more here.
Keywords: bismuth amides; activation cationic; activation; bismuth ... See more keywords