Results 151 to 160 of about 274,158 (325)

Molekulare Modelle intermetallischer Phasen: Selektive Alkylamid‐Ligand‐Entschützung steuert die Bildung von Co/Ga‐Clustern

open access: yesAngewandte Chemie, EarlyView.
Der bimetallische M14‐Cluster [Co3Ga2]H(μ2‐GaTMP)9 wurde durch einen ko‐reduktiven Ansatz erzielt. Dieser Ansatz nutzt Mg und H2, um den Ga‐TMP‐Liganden selektiv zu entschützen und das TMP abzufangen, was zur Bildung eines gemischtmetallischen Co/Ga Clusterkerns führt, was diesen zu einem strukturellen Vertreter eines vergleichbaren Gegenstücks der ...
Fabrizio E. Napoli   +6 more
wiley   +1 more source

Modular Assembly of Dynamic Polymer Networks From Heteroaffinity Cross‐Links to Multivalent Proteins

open access: yesAngewandte Chemie, EarlyView.
This study develops a method to modularly assemble oligomeric binding proteins, like streptavidin, using heterobifunctional cross‐linkers that have both a strong‐ and a weak‐affinity binding moiety. These dynamic cross‐linkers enable the assembly of polymer networks with unique meta‐stable nonequilibrium topologies, and that exhibit chemically tunable ...
Tianyue Dai   +6 more
wiley   +2 more sources

Photoenzymatic Hydroalkylation Enables Streamlined Access to Aryl Glutarimide Precursors

open access: yesAngewandte Chemie, EarlyView.
We report a photoenzymatic hydroalkylation that enables streamlined, stereocontrolled access to aryl glutarimide precursors relevant to targeted protein degradation. Engineered flavin‐dependent “ene”‐reductases provide broad scope and high enantioselectivity through a distinct electron transfer–enantioselective proton transfer pathway.
Zhi Xu   +9 more
wiley   +2 more sources

NiH‐Catalyzed Enantioconvergent α‐Alkenylation of Carbonyl Compounds via Markovnikov Alkyne Hydronickellation

open access: yesAngewandte Chemie, EarlyView.
A NiH‐catalyzed α‐alkenylation via Markovnikov hydronickellation of alkynes enables convenient access to α‐chrial β‐methylene carbonyl frameworks that are prevalent in biorelevant molecules. High regio‐ and enantioselectivities have been achieved with excellent functional group tolerance and applicability toward complex structures. The β‐methylene unit
Hyeontaek Nam   +3 more
wiley   +2 more sources

Rh‐Catalyzed Chemodivergent Parallel Kinetic Resolution and Desymmetrization of Enynes and Dienynes with Acrylamides

open access: yesAngewandte Chemie, EarlyView.
Rh‐catalyzed chemodivergent parallel kinetic resolution of racemic 1,6‐enynes with α‐fluoroacrylamides or mixtures of different acrylamides proceeded via [2+2+2] cycloaddition and C–H alkylation to afford structurally and stereochemically distinct products with high selectivity under mild conditions.
Shintaro Hamada   +5 more
wiley   +2 more sources

Wasserstoffaktivierung über Dihydrid‐Bildung an einem Rh1/Fe3O4(001)‐Einzelatomkatalysator

open access: yesAngewandte Chemie, EarlyView.
Die Deuterium‐ (Wasserstoff‐)Adsorption am Einzelatomkatalysator Rh1/Fe3O4(001) induziert keinen D‐ (H‐)Spillover auf den reduzierbaren Fe3O4‐Träger. Stattdessen bildet sich eine Rh1‐Dihydrid‐Spezies (Rh−2D bzw. Rh−2H), dessen Wasserstoff beim Tempern desorbiert. ZUSAMMENFASSUNG Die Wasserstoffaktivierung ist ein zentraler Schritt in der katalystischen
Chunlei Wang   +12 more
wiley   +1 more source

Cluster dynamics modeling of hydrogen retention and desorption in tungsten with saturation and multi-trapping effect of sinks

open access: yesNuclear Fusion
Hydrogen (H) retention and desorption in tungsten (W)-based plasma-facing materials are still not well understood, largely due to the limitations of ex-situ observations in experimental detection methods like thermal desorption spectroscopy (TDS).
Xiaoru Chen   +5 more
doaj   +1 more source

Hydrogen Activation via Dihydride Formation on a Rh1/Fe3O4(001) Single‐Atom Catalyst

open access: yesAngewandte Chemie International Edition, EarlyView.
Deuterium (hydrogen) adsorption on single‐atom Rh1/Fe3O4(001) catalyst does not induce D (H) spillover onto the reducible Fe3O4 support. Instead, a Rh1‐dihydride (Rh−2D or Rh−2H) species forms and D2 or H2desorbs during annealing. ABSTRACT Hydrogen activation is a key elementary step in catalytic hydrogenation.
Chunlei Wang   +12 more
wiley   +1 more source

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