Results 41 to 50 of about 535,188 (168)

Exploring the Boundaries of Aromaticity in Complex Structures and Excited States Through Computational Analysis

open access: yesChemistry – A European Journal, EarlyView.
Understanding aromaticity has evolved from benzene‐centric concepts to a broad multidimensional framework spanning organic, inorganic, and excited‐state systems. This review highlights ambiguities between magnetic, electronic, geometric, and energetic descriptors, emphasizing the need for unified, multi‐criteria approaches.
Sílvia Escayola   +2 more
wiley   +1 more source

Direct 2,2,2‐Trifluoro and 2,2‐Difluoroethoxylation of a Model Macrocyclic Ar−H Substrate via Ni‐Catalysis

open access: yesChemistryEurope
Herein, we describe the trifluoro‐ and difluoroethoxylation of C(sp2)‐H bonds using nickel(II) complexes incorporating a model macrocyclic arene substrate.
Lorena Capdevila   +5 more
doaj   +1 more source

Modifying Catalytic Sustainability in Renaud Catalysts: Hints From Aromaticity, Conceptual DFT, and Steric Mapping

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
Replacing precious‐metal hydrogenation catalysts with sustainable iron systems is becoming a central challenge in catalysis. This predictive computational study reveals how rational redesign of Knölker‐type iron complexes dramatically enhances catalytic performance.
Carles Alcaide   +6 more
wiley   +1 more source

Understanding the Dynamics of Mechanically Interlocked Molecular Systems via Metadynamics Simulations

open access: yesThe Chemical Record, EarlyView.
This Personal Account discusses how molecular simulations help uncover motion, shuttling mechanisms, and kinetics in mechanically interlocked molecules such as rotaxanes and catenanes. Mechanically interlocked molecules, such as rotaxanes and catenanes, display complex internal dynamics and reciprocal motions that are central to their use as artificial
Clara Sabrià   +6 more
wiley   +1 more source

DFT in catalysis: Complex equations for practical computing applications in chemistry

open access: yesDigital Chemical Engineering
Density Functional Theory (DFT) has become the cornerstone of modern computational catalysis, providing a practical balance between accuracy and efficiency in describing molecular structure, bonding, and reactivity.
Artur Brotons Rufes   +2 more
doaj   +1 more source

Assessment of a Computational Protocol for Predicting Co-59 NMR Chemical Shift

open access: yesMagnetochemistry, 2023
In the present study, we benchmark computational protocols for predicting Co-59 NMR chemical shift. Quantum mechanical calculations based on density functional theory were used, in conjunction with our NMR-DKH basis sets for all atoms, including Co ...
Matheus G. R. Gomes   +4 more
doaj   +1 more source

Synthesis, Antiparasitic Activity, and ADME Profile of Morpholinephenylbenzamides: A Pharmacological Study Against Chagas Disease and Visceral Leishmaniasis

open access: yesChemMedChem, Volume 21, Issue 19, 14 October 2026.
Hit‐to‐lead optimization of morpholinephenylbenzamides reveals key structure–activity relationships against Trypanosoma cruzi and Leishmania infantum. Potency, selectivity, and ADME properties are differentially improved across the series, identifying compounds 20, 24, and 16 as complementary templates for the future design of dual antiparasitic leads.
Danilo Nascimento Farago   +15 more
wiley   +1 more source

Structural control over spin localization in triarylmethyls† [PDF]

open access: yesRSC Advances, 2015
Triarylmethyls (TAMs) are a class of long-lived purely organic radicals discovered at the beginning of the twentieth century. The chemical versatility and high stability of TAMs have lead to their application in many fields of science and technology. All
Isaac Alcón, Stefan T. Bromley
doaj   +1 more source

Análise da fluidodinâmica do prato perfurado de uma unidade piloto de destilação [PDF]

open access: yes, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Química, Florianópolis, 2009O processo de destilação é amplamente utilizado em refinarias de petróleo porém, a maioria dos ...
Teleken, Joel Gustavo
core  

Minimum conditions for accurate modeling of urea production via co-electrolysis

open access: yesCommunications Chemistry, 2023
Co-electrolysis of carbon oxides and nitrogen oxides promise to simultaneously help restore the balance of the C and N cycles while producing valuable chemicals such as urea.
Ricardo Urrego-Ortiz   +5 more
doaj   +1 more source

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