Results 161 to 170 of about 55,314 (289)

Chelation Drives Surface Substitution in Hybrid‐MXenes

Angewandte Chemie, EarlyView.
We demonstrate ethylenediamine‐derived bidentate binding on Ti3C2 by controlled deprotonation of ─NH2 groups during reaction with Ti3C2Br2. XRD, XPS, ssNMR, STEM, DFT, and INS confirm the bidentate coordination and the superior stability of chelating modes, while AIMD reveals proton transfer and new surface imine–Ti bonding mode.
Vikash Khokhar, Young‐Hwan Kim, Abu Rashed Md. Shawon, Fatemeh Karimi, Danial Zangeneh, Yongqiang Cheng, Chang Liu, Murillo Longo Martins, Alexander S. Filatov, Robert F. Klie, Aaron J. Rossini, John S. Anderson, Dmitri V. Talapin, De‐en Jiang   +13 more
wiley   +2 more sources

Solution Synthesis of Actinide Chalcogenide and Oxychalcogenide Nanoparticles

Angewandte Chemie, EarlyView.
We report the synthesis of UOS, UOSe, and US2 nanoparticles under colloidal conditions. The magnetic properties were measured of all three materials and compared to prior studies of UO2 nanoparticles. Nanoparticle phases were determined using powder diffraction, and size by transmission electron microscopy.
Cheyenne Orozco, Orlando C. Stewart Jr., Nicole Vanagas, Greg Morrison, Hans‐Conrad zur Loye, Hope E. Smith, Karah Knope, Sarah L. Stoll   +7 more
wiley   +2 more sources

Enantioselective Synthesis of a New Class of Stable and Functionalized Cyclopentadienes via CuH‐Catalysis

Angewandte Chemie, EarlyView.
Cyclopentadienes (CpHs) are fundamental building blocks with widespread applications in chemistry. However, their inherent acidity and isomeric instability have long limited access to chiral variants in an asymmetric fashion. Here, we introduce a CuH‐catalyzed asymmetric transformation that provides an unprecedented entry into a new class of ...
Piero Soppelsa, Riccardo Bellin, Besma Boulila, Francesco Vaghi, Manuel Orlandi   +4 more
wiley   +2 more sources

Deprotonative Single-Electron Oxidation as a General and Controllably Selective Platform for Benzylic C-H Functionalization. [PDF]

J Am Chem Soc
Coradi NJ, Bandar JS.
europepmc   +1 more source

Flavin Catalysts in Organic Synthesis

Angewandte Chemie, EarlyView.
Flavins and their congeners are potent catalysts for organic synthesis inspired by enzymatic transformations. In addition to catalysis in the flavin ground state via covalent intermediates, the excited singlet and triplet states unlock applications including photooxidation, photoreduction, and energy transfer via sensitization.
Jan Freudenberg, Golo Storch
wiley   +2 more sources

Rationalized Volcano Plot in Heterogeneous Electrochemiluminescence. [PDF]

ACS Electrochem
Fracassa A, Orza M, Mariani C, Santo CI, Martinez Asenjo C, D'Arrigo E, Sojic N, Paolucci F, Negri F, Valenti G.   +9 more
europepmc   +1 more source

Deprotonation-controlled copper-free Pd-catalyzed Sonogashira coupling <i>versus</i> the Kumada-Tamao-Corriu reaction: a DFT investigation toward anticancer carborane alkynes. [PDF]

RSC Adv
Soltani E, Bayat M.
europepmc   +1 more source

Excited‐State Antiaromaticity in Nonbenzenoid Aromatics: Examining the Dynamics of Intramolecular Proton Transfer With a Small Driving Force

Angewandte Chemie, EarlyView.
The excited‐state antiaromaticity of hydroxybenzotropyliums (HBTs) can be tuned through substituent effects to bring the aromatic ‘enol’ (E) and keto (K) tautomers close in energy. This leads to abnormally slow excited‐state proton transfer (on the ns timescale), giving rise to dual fluorescence emission and weak photoacidity.
Promeet K. Saha, Charlotte A. Bardsley, Hector G. Miranda‐Salinas, Daniel Crane, Rabia Ayub, Andrew P. Monkman, Paul R. McGonigal   +6 more
wiley   +2 more sources

Single Ni Atoms Drive Carboxyl Deprotonation in Metal-Organic Chains. [PDF]

ACS Nano
Mearini S, Auer F, Laßhofer M, Windischbacher A, Brandstetter D, Baranowski D, Grisan Qiu YY, Cojocariu I, Jugovac M, Sterrer M, Zamborlini G, Feyer V, Schneider CM.   +12 more
europepmc   +1 more source

Nucleophilic Gallyl Anions Enable Ga─Au Bimetallic Ammonia Activation

Angewandte Chemie, EarlyView.
Unlocking gallyl nucleophiles: Counterion control enables formation of an unsupported gallyl─gold complex. Gold coordination induces a polarity switch at gallium, enabling cooperative activation of NH3 and related N─H/O─H substrates under mild conditions.
Hellen Videa, Keelan M. Byrne, Tobias Krämer, Antonio J. Martínez‐Martínez   +3 more
wiley   +2 more sources