Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Pyrazine (pyz) has been used extensively in coordination chemistry to manifest electron delocalization in mixed-valent compounds and strongly coupled materials. In the current work, using a Yb precursor, [(CHMe)Yb(THF)] (), a molecular square [(CHMe)Yb(pyz)]·/(CHF) () was synthesized by metal-ligand redox cooperativity. Complex shows evidence of charge transfer from Yb to pyrazine in a range of studies including structural analysis, magnetometry, vibrational spectroscopy, X-ray absorption near-edge structure spectroscopy, and electronic structure calculations. DFT calculations support the assignment of low-energy bands in the UV-vis spectrum as pyrazine-SOMO-to-metal-4f charge transfer. Magnetic studies reveal a Yb-pyz exchange coupling of -3.6 cm and pyz-pyz coupling of -18.6 cm for the radical bridged Yb-square complex.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.inorgchem.5c02655 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
[Transitioning to adult oncology for adolescents and young adults (AYAs): The experience of an AYA unit].
Med Sci (Paris)
September 2025
Département de cancérologie de l'enfant et l'adolescent (DCEA), Gustave Roussy cancer campus, Villejuif, France - Équipe mobile SPIAJA, équipe spécifique de prise en charge interdisciplinaire des adolescents et jeunes adultes, Gustave Roussy cancer campus, Villejuif, France.
Supporting the transition from pediatric to adult oncology presents challenges for all stakeholders, including adolescent and young adult (AYA) patients, their parents, pediatric oncologists, and medical oncologists. In this article, we describe the different stages of this transition and the transfer of care, the obstacles to the transition, and potential solutions. We discuss the contribution of AYA care in oncology through collaborations between pediatric and medical oncologists, and the importance of multidisciplinary support for patient empowerment.
View Article and Find Full Text PDFTailoring Active Sites in Amorphous NiFe-MOFs through Pyridine Ligand Coordination for Enhanced Oxygen Evolution Performance.
ACS Appl Mater Interfaces
September 2025
Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, P. R. China.
The development of high-performance, cost-effective non-noble metal catalysts for the oxygen evolution reaction (OER) is critical to advancing sustainable hydrogen production via water electrolysis. Herein, we report a facile and mild strategy for synthesizing amorphous bimetallic organic framework materials (NiFe-MOFs) using pyridine-modified threonine (l-PyThr) as an organic ligand. The optimized NiFe-PyThr-4:1 catalyst exhibits remarkable OER activity, requiring low overpotentials of only 162 and 222 mV to achieve current densities of 10 and 100 mA cm, respectively, along with a small Tafel slope of 34.
View Article and Find Full Text PDFDual-Analyte Detection of Dopamine and Folic Acid Using a 3D Honeycomb Structured Reduced Graphene Oxide/Polypyrrole-Polyoxometalate Porous Film.
Langmuir
September 2025
School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China.
Electrochemical sensors capable of detecting different types of biomolecules using a single electrode are highly desirable for simplifying analytical platforms and expanding their practical applicability. Herein, we develop a multifunctional electrochemical sensor based on a 3D honeycomb-like porous rGO/PPy-POM composite film for the independent detection of dopamine (DA) and folic acid (FA), two chemically distinct and clinically relevant biomolecules. The electrode is fabricated through a facile, low-cost, and environmentally friendly breath figure method to create a 3D porous reduced graphene oxide (rGO) framework, followed by codeposition of polypyrrole (PPy) and polyoxometalates (POMs).
View Article and Find Full Text PDFElectron-Rich Macrocycle-Based Metal-Organic Frameworks for Efficient Photocatalytic CO Reduction.
J Am Chem Soc
September 2025
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China.
Metal-organic frameworks (MOFs) are distinguished by their structural diversity, tunable electronic properties, and exceptional performance in various applications. Notably, the electron-donating ability of ligands significantly enhances the ligand-to-metal charge transfer (LMCT) processes within these frameworks, thereby promoting efficient charge migration. Herein, we developed two electron-rich macrocyclic ligands derived from phenothiazine- and phenoxazine-functionalized calix[3]arenes, alongside their corresponding cobalt-coordinated MOFs.
View Article and Find Full Text PDFEngineering Brønsted Acidic Microenvironments via Strong Metal-Support Interaction in Single-Atom Pd/CeO for Acid-Free Acetalization Catalysis.
Inorg Chem
September 2025
College of Chemistry and Materials Science, The key Laboratory of Functional Molecular Solids, Ministry of Education, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materia
Conventional acid-catalyzed acetalization faces significant challenges in catalyst recovery and poses environmental concerns. Herein, we develop a CeO-supported Pd single-atom catalyst (Pd/CeO) that eliminates the reliance on liquid acids by creating a localized H-rich microenvironment through heterolytic H activation. X-ray absorption near-edge structure and extended X-ray absorption fine structure analyses confirm the atomic dispersion of Pd via Pd-O-Ce coordination, while density functional theory (DFT) calculations reveal strong metal-support interactions (SMSI) that facilitate electron transfer from CeO oxygen to Pd, downshifting the Pd d-band center and optimizing H activation.
View Article and Find Full Text PDF