Results 81 to 90 of about 11,727 (238)

A Convenient, Safe, and Atom‐Economical Route to a Large Portfolio of Grubbs‐Type Catalysts for Olefin Metathesis via Four‐Coordinate Ruthenium Alkylidynes

Angewandte Chemie, EarlyView.
It may seem counterintuitive to first target a ruthenium alkylidyne when Grubbs‐type ruthenium carbene complexes are the actual goal. In the end, however, this tactic pays valuable dividends in terms of practicality, atom economy, flexibility as well as safety: the new route provides ready access to a large assortment of catalysts for alkene metathesis
Mingxu Cui, Alois Fürstner
wiley   +2 more sources

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

Angewandte 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, Raphael Bühler, Johannes Stephan, Samia Kahlal, Jean‐Yves Saillard, Christian Gemel, Roland A. Fischer   +6 more
wiley   +1 more source

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

Angewandte 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, Seji Jang, Dongwook Kim, Sangwon Seo   +3 more
wiley   +2 more sources

Effect of Heating Rate on Hydride Reorientation Behavior of Zirconium Alloy Tubes under Non-Stress Loading

Metals
Zirconium alloys are widely used in nuclear water reactors as cladding materials. The cladding materials will absorb hydrogen from high temperature water during the operation of nuclear reactor.
Boning Hui, Mingju Chen, Xinyi Li, Biao Chen, Yuli Li, Jun Zhou, Rongtao Tang, Jinshan Li   +7 more
doaj   +1 more source

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

Angewandte 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, Panukorn Sombut, Lena Puntscher, Nail Barama, Maosheng Hao, Florian Kraushofer, Jiri Pavelec, Matthias Meier, Florian Libisch, Michael Schmid, Ulrike Diebold, Cesare Franchini, Gareth S. Parkinson   +12 more
wiley   +1 more source

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

Angewandte 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, Julong Jiang, Yu Sato, Takashi Yamazaki, Satoshi Maeda, Ken Tanaka   +5 more
wiley   +2 more sources

hydride

, 2019
Citation: 'hydride' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.H02886 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms. Requests for commercial usage
openaire   +1 more source

Search for superconducting icosahedral hydrides via coordination number engineering

Communications Physics
Superconducting hydrides provides a possible route to hunt for high-temperature superconductors. Recent high-throughput calculations suggest hydrides, which are combined by alkali or alkali-earth elements and hydrogen-and-transition-metal units, as ...
Hao Song, Mingyang Du, Zihan Zhang, Defang Duan, Tian Cui   +4 more
doaj   +1 more source

High pressure study of sodium trihydride

Frontiers in Chemistry
The reactivity between NaH and H2 has been investigated through a series of high-temperature experiments up to pressures of 78 GPa in diamond anvil cells combined with first principles calculations. Powder X-ray diffraction measurements show that heating
Tomas Marqueño, Mikhail A. Kuzovnikov, Israel Osmond, Phillip Dalladay-Simpson, Andreas Hermann, Ross T. Howie, Ross T. Howie, Miriam Peña-Alvarez   +7 more
doaj   +1 more source

An Integrated Solution to FIB-Induced Hydride Artifacts in Pure Zirconium

Micromachines
The preparation method of transmission electron microscopy (TEM) samples for pure zirconium was successfully executed using a focused ion beam (FIB) system. These samples unveiled artifact hydrides induced during the FIB sample preparation process, which
Yi Qiao, Zongwei Xu, Shilei Li, Fu Wang, Yubo Huang   +4 more
doaj   +1 more source