AI Article Synopsis
- The study focuses on a unique uranium complex that uses triphenylsiloxide ligands, revealing a rare method of stabilizing low valent metal centers through intramolecular ligand movement.
- By reducing a specific diuranium(IV) complex, the researchers created new uranium complexes with defined oxidation states, showcasing the importance of ligand migration and uranium-arene interactions.
- Notably, one of the newly formed complexes can facilitate electron-transfer reactions with pyridine, suggesting a novel way to manage redox behavior in complexes containing f-elements.
Article Abstract
Herein, we report the redox reactivity of a multimetallic uranium complex supported by triphenylsiloxide (-OSiPh ) ligands, where we show that low valent synthons can be stabilized via an unprecedented mechanism involving intramolecular ligand migration. The two- and three-electron reduction of the oxo-bridged diuranium(IV) complex [{(Ph SiO) (DME)U} (μ-O)], 4, yields the formal "U /U ", 5, and "U /U ", 6, complexes via ligand migration and formation of uranium-arene δ-bond interactions. Remarkably, complex 5 effects the two-electron reductive coupling of pyridine affording complex 7, which demonstrates that the electron-transfer is accompanied by ligand migration, restoring the original ligand arrangement found in 4. This work provides a new method for controlling the redox reactivity in molecular complexes of unstable, low-valent metal centers, and can lead to the further development of f-elements redox reactivity.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/anie.202304051 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Oxidative/Nitrosative Stress, Apoptosis, and Redox Signaling: Key Players in Neurodegenerative Diseases.
J Biochem Mol Toxicol
January 2025
Department of Medical Biochemistry, Faculty of Medicine, Kahramanmaraş Sütçü İmam University, Kahramanmaraş, Turkey.
Neurodegenerative diseases are significant health concerns that have a profound impact on the quality and duration of life for millions of individuals. These diseases are characterized by pathological changes in various brain regions, specific genetic mutations associated with the disease, deposits of abnormal proteins, and the degeneration of neurological cells. As neurodegenerative disorders vary in their epidemiological characteristics and vulnerability of neurons, treatment of these diseases is usually aimed at slowing disease progression.
View Article and Find Full Text PDFInhibited peroxidase activity of peroxiredoxin 1 by palmitic acid exacerbates nonalcoholic steatohepatitis in male mice.
Nat Commun
January 2025
NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, The province and ministry co-sponsored collaborative innovation center for medical epigenetics, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, 300134, China.
Reactive oxygen species exacerbate nonalcoholic steatohepatitis (NASH) by oxidizing macromolecules; yet how they promote NASH remains poorly understood. Here, we show that peroxidase activity of global hepatic peroxiredoxin (PRDX) is significantly decreased in NASH, and palmitic acid (PA) binds to PRDX1 and inhibits its peroxidase activity. Using three genetic models, we demonstrate that hepatic PRDX1 protects against NASH in male mice.
View Article and Find Full Text PDFSupport effect on methane combustion over iridium catalysts: Unraveling the metal-support interaction mechanism.
J Colloid Interface Sci
January 2025
School of Environmental Science and Engineering, State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Marine Biobased Materials, Qingdao University, Qingdao 266071 China; Institute of Micro/Nano Materials and Devices, Ningbo University of Technology, Ningbo 315211 China. Electronic address:
The redox properties of iridium (Ir) active component are critically important in methane combustion. Interface engineering is highly effective in modulating the redox properties of active metals via tailoring the metal-support interaction (MSI). Herein, Ir catalysts supported on different carriers (TiO, CeO, AlO) were synthesized and evaluated for methane combustion.
View Article and Find Full Text PDFLinoleic acid alleviates aluminum toxicity by modulating fatty acid composition and redox homeostasis in wheat (Triticum aestivum) seedlings.
J Hazard Mater
January 2025
MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China. Electronic address:
Lipids, as key components of biological membranes, play vital roles in sensing and initiating plant responses to various abiotic stresses. Here, the alteration of membrane fatty acids in wheat roots under Al stress was investigated using two genotypes differing in Al tolerance, and the role of linoleic acid in Al tolerance was comprehensively explored. Significant differences in the fatty acid profiles were observed, with increased linoleic acid accumulation in the Al-tolerant genotype.
View Article and Find Full Text PDFCatalyst-Free Nitrogen Fixation by Microdroplets through a Radical-Mediated Disproportionation Mechanism under Ambient Conditions.
J Am Chem Soc
January 2025
State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, College of Chemistry and Chemical Engineering, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen University, Xiamen 361005, China.
Nitrogen fixation is essential for the sustainable development of both human society and the environment. Due to the chemical inertness of the N≡N bond, the traditional Haber-Bosch process operates under extreme conditions, making nitrogen fixation under ambient conditions highly desirable but challenging. In this study, we present an ultrasonic atomizing microdroplet method that achieves nitrogen fixation using water and air under ambient conditions in a rationally designed sealed device, without the need for any catalyst.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!