Results 61 to 70 of about 12,998 (208)

Hammett correlation and reaction mechanisms in mechanochemical imine formation

, 2023
Solution-based physical organic chemistry was marked by the development of Hammett correlation, which further served as a major tool for deciphering the mechanisms of organic reactions in solution. If applicable to mechanochemical reactions, it will provide support for understanding the reaction mechanisms and expansion of this important synthetic ...
Vugrin, Leonarda, Carta, Maria, Delogu, Francesco, Halasz, Ivan   +3 more
openaire   +3 more sources

Linear and Two‐Dimensional Infrared Spectroscopy of the Multifunctional Vibrational Probe, 3‐(4‐Azidophenyl) Propiolonitrile. Deperturbing a Fermi Triad by Isotopic Substitution

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
Linear infrared spectroscopy combined with isotope labeling and density functional theory unravels the origin of a Fermi triad in a multifunctional vibrational chromophore. Ultrafast 2DIR‐spectroscopy reports directly on the dynamics and the intramolecular vibrational energy flow pathways in the isotopically deperturbed system. Abstract Infrared probes
Claudia Gräve, Jörg Lindner, Stefan Flesch, Luis I. Domenianni, Peter Vöhringer   +4 more
wiley   +1 more source

Bottlenecks‐Breaking in Zinc‐Iodine Batteries Toward Practical Implementation: A Review and Perspective

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Aqueous zinc–iodine batteries (Zn–I2Bs) offer promise for grid storage due to safety and cost advantages yet face critical bottlenecks: severe self‐discharge (polyiodide shuttling and HER), limited energy density, sluggish kinetics, and zinc anode instability.
Jia‐Lin Yang, Jun‐Ming Cao, Dai‐Huo Liu, Xing‐Long Wu   +3 more
wiley   +1 more source

Microsomal superoxide anion production and NADPH-oxidation in a series of 22 aziridinylbenzoquinones [PDF]

, 1989
Several 2,5-bis(1-aziridinyl)-1,4-benzoquinones (BABQs) can be activated to alkylating species by reduction of the quinone moiety. On the other hand, cytotoxicity of these compounds can be induced by redox cycling.
Koster, Andries Sj., Prins, Bram, Reinhoudt, David N., Verboom, Willem   +3 more
core   +3 more sources

Using a social‐ecological macrosystems framework to understand how human activities alter ecological synchrony

People and Nature, EarlyView.
Abstract Different aspects of ecological systems, biotic or abiotic, often fluctuate in coordinated patterns over space and time. Such high concordance between ecological processes is often referred to as ecological synchrony. Human activities, including and beyond climate change, have the potential to alter ecological synchrony by disrupting or ...
Yiluan Song, Mallory Barnes, K. Ann Bybee‐Finley, Kyla M. Dahlin, Travis McDevitt‐Galles, Stephan B. Munch, Guillermo E. Ponce‐Campos, Casey Youngflesh, Benjamin Zuckerberg, Kai Zhu   +9 more
wiley   +1 more source

Premarital Cohabitation and Intimate Partner Violence in Urban China: Evidence From Beijing

Journal of Marriage and Family, EarlyView.
ABSTRACT Objective This study contributes to the emerging literature on cohabitation and marital outcomes in urban China by examining the associations between premarital cohabitation and six types of intimate partner violence (IPV). Background Premarital cohabitation has been on the rise, yet its evolving meanings and long‐term implications for post ...
Yexin Zheng, Zheng Mu, Ting Li
wiley   +1 more source

Elucidating the Stereodirecting Effect of C‐4 Acyl Groups on Galactosyl Donors

Angewandte Chemie, Volume 138, Issue 14, 27 March 2026.
Tipping the balance of the reaction coordinate by changing a single protecting group. We demonstrate that α‐ and β‐galactosyl triflates are formed during galactosylation reactions and likely glycosylate according to a Curtin–Hammett scenario. C‐4 acyl groups exert their stereodirecting effect by sterically blocking displacement of α‐galactosyl ...
Floor ter Braak, Frank F. J. de Kleijne, Teun van Wieringen, Peter H. Moons, Jonathan Martens, Jos Oomens, Peter A. Korevaar, Paul B. White, Thomas J. Boltje   +8 more
wiley   +2 more sources

The hydrolysis of phosphocreatine and the origin of urinary creatinine [PDF]

, 1947
Shaffer (1), Myers and Fine (2), and Hahn and Meyer (3) adduced evidence that muscle creatine is the precursor of urinary creatinine. This was questioned by Chanutin and Kinard (4) but was conclusively proved by Bloch, Schoenheimer, and Rittenberg (5, 6)
Borsook, Henry, Dubnoff, Jacob W.
core  

Crayons × Code: Re‐Exploring Children's Drawings With Multimodal AI and Dynamic Ethics

Area, Volume 58, Issue 2, June 2026.
ABSTRACT Children's drawings are used to study their environmental perception, but AI‐powered analysis of these visual materials remains underexplored. This paper re‐explores the use of children's drawings as a tool for understanding their perceptions of the environment, leveraging multimodal AI for analysis.
Chen Qu
wiley   +1 more source

Synthesis, IR and NMR spectral correlations in some symmetrical diimines

Bulletin of the Chemical Society of Ethiopia, 2014
A series of diimines have been synthesized by coupling of diamine with substituted benzaldehydes. The purities of these diimines were checked by their analytical and spectroscopic data. The spectral frequencies νCN (cm-1), NMR chemical shifts (δ, ppm) of
G. Thirunarayanan
doaj   +1 more source