Topics in organometallic chemistry, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
Язык: Английский
Journal of the American Chemical Society, Год журнала: 2024, Номер unknown
Опубликована: Сен. 18, 2024
Transition-metal-catalyzed amination of aryl halides is one the most employed methods for constructing
Язык: Английский
Процитировано
3
ACS Nano, Год журнала: 2025, Номер unknown
Опубликована: Янв. 29, 2025
Unlike homogeneous metal complexes, achieving absolute control over reaction selectivity in heterogeneous catalysts remains a formidable challenge due to the unguided molecular adsorption/desorption on metal-surface sites. Conventional organic surface modifiers or ligands and rigid inorganic metal-organic porous shells are not fully effective. Here, we introduce concept of "ligand-porous shell cooperativity" desirably switch catalysis. We present nanocatalyst design strategy consisting bilayer silica-sandwiched 2D mixed islands. The intimate 2D/2D nanoscale interfacing between silica layers flat island-like mixed-metal sites, combined with ligands, creates nanoconfined microenvironment that enables reliable orientation-dependent reactivity, affording desired product 100% selectivity. This simultaneously leverages hydrophobicity flexibility geometric rigidity pores inside shell. Our is effective simple amorphous silica, random Cu-alloy, commonly used metal-coordinating ligands. demonstrate applicability industrially significant reactions: selective hydrogenation alkynes, α,β-unsaturated esters/aldehydes, nitroarenes. findings offer valuable scope multicomponent compact next-generation switchable, sustainable, recyclable
Язык: Английский
Процитировано
0
Inorganic Chemistry, Год журнала: 2025, Номер unknown
Опубликована: Апрель 15, 2025
We describe the synthesis of two rhodium and iridium complexes featuring a di-NHC macrocyclic ligand, which incorporates both diphenylene moiety naphthalenediimide (NDI) unit. observed that addition fluoride or chloride resulted in substantial alterations to steric electronic properties complexes. Specifically, led reduction NDI unit through formation an (OH-) intermediate, while produced (Cl-)···NDI adduct. Both adducts were confirmed by mass spectrometry. The impact on NDI-containing was examined using spectroscopic computational methods. presence either halide significantly enhanced catalytic activity hydroboration terminal alkenes. Finally, we demonstrated this enhancement is reversible, with process being activated deactivated sequential introduction excess NOBF4. This observation reveals rare example halide-induced redox-switchable (HIRSC) system.
Язык: Английский
Процитировано
0
Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown
Опубликована: Апрель 18, 2025
Abstract The rapidly growing importance of electrification in the chemical industry opens room for disruptive innovations regarding energy input into catalytic processes. Energy efficiency and dynamics renewable supplies represent important challenges, but design systems to cope with such new frameworks may also stimulate discovery catalyst materials reaction pathways. In this context, many opportunities arise when catalysts are activated a rapid, localized, energy‐efficient manner. Among various concepts achieve adaptivity catalysis, magnetic induction heating applied directly at or vicinity active site has gained increasing attention recently. Scientific Perspective, we provide coherent framework emerging field catalysis using fields—and particular alternating current fields—to activate define it as magnetically induced . Promising approaches selected examples described illustrate scientific concept highlight its broad potential innovation from laboratory industrial scale.
Язык: Английский
Процитировано
0
Angewandte Chemie, Год журнала: 2025, Номер unknown
Опубликована: Апрель 18, 2025
Abstract The rapidly growing importance of electrification in the chemical industry opens room for disruptive innovations regarding energy input into catalytic processes. Energy efficiency and dynamics renewable supplies represent important challenges, but design systems to cope with such new frameworks may also stimulate discovery catalyst materials reaction pathways. In this context, many opportunities arise when catalysts are activated a rapid, localized, energy‐efficient manner. Among various concepts achieve adaptivity catalysis, magnetic induction heating applied directly at or vicinity active site has gained increasing attention recently. Scientific Perspective, we provide coherent framework emerging field catalysis using fields—and particular alternating current fields—to activate define it as magnetically induced . Promising approaches selected examples described illustrate scientific concept highlight its broad potential innovation from laboratory industrial scale.
Язык: Английский
Процитировано
0
Applied Surface Science, Год журнала: 2025, Номер 706, С. 163577 - 163577
Опубликована: Май 20, 2025
Язык: Английский
Процитировано
0
Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(48)
Опубликована: Сен. 7, 2023
Ruthenium nanoparticles (NPs) immobilized on an amine-functionalized polymer-grafted silica support act as adaptive catalysts for the hydrogenation of bicyclic heteroaromatics. Whereas full benzofuran and quinoline derivatives is achieved under pure H2 , introducing CO2 into gas phase leads to effective shutdown arene while preserving activity heteroaromatic part. The selectivity switch originates from generation ammonium formate species surface materials by catalytic . fully reversible, resulting in a robust rapid between two states catalyst adapting its performance response feed composition. A variety were hydrogenated or partially saturated products high yields simply altering composition /CO2 system thus provides controlled access valuable using single rather than specific distinct with static reactivity.
Язык: Английский
Процитировано
8
Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(48)
Опубликована: Окт. 4, 2023
We report the rhodium(I) complex [Rh(CNC-NDI)(CO)]+ , in which CNC-NDI refers to a pincer-CNC ligand decorated with naphthalenediimide moiety. Due presence of planar CNC and moiety, electronic nature can be modulated by means supramolecular redox stimuli, respectively. The metal shows strong π-π-stacking interaction coronene. This has an impact on electron-richness metal, as demonstrated shifting ν(CO) stretching band lower frequency. addition tetrabutylammonium fluoride facilitates sequential one- two-electron reduction NDI moiety ligand, thus resulting situation increase its electron-donor strength two levels. anion was studied computationally. catalytic activity tested cycloisomerization alkynoic acids, where it is observed that catalyst between four levels activity, correspond i) use unmodified catalyst, ii) catalyst+coronene, iii) catalyst+2 equivalents fluoride, iv) catalyst+5 fluoride.
Язык: Английский
Процитировано
7
Fuel, Год журнала: 2024, Номер 383, С. 133852 - 133852
Опубликована: Дек. 1, 2024
Язык: Английский
Процитировано
2
Journal of Catalysis, Год журнала: 2024, Номер unknown, С. 115914 - 115914
Опубликована: Дек. 1, 2024
Язык: Английский
Процитировано
2