Results 51 to 60 of about 5,106 (108)

A Nanosized {NiII18} Cluster with a ‘Flying Saucer’ Topology Exhibiting Slow Relaxation of Magnetisation Phenomena at Both 15 K and 1.3 K

Chemistry – A European Journal, Volume 31, Issue 4, January 17, 2025.
A high‐nuclearity {Ni18} nanosized complex with an unprecedented ‘flying saucer’ motif has been prepared from the organic chelate α‐methyl‐2‐pyridine‐methanol (mpmH) in conjunction with bridging azido and peroxido groups. The {Ni18} compound behaves as single‐molecule magnet and exhibits very rare two relaxation processes at 15 and 1.3 K.
Angeliki A. Athanasopoulou, Parisa Abbasi, Dimitris I. Alexandropoulos, John J. Hayward, Christine M. Beavers, Simon J. Teat, Wolfgang Wernsdorfer, Júlia Mayans, Albert Escuer, Melanie Pilkington, Theocharis C. Stamatatos   +10 more
wiley   +1 more source

Stabilizing Copper(I) Complexes by Terminal Olefinic Side Arms and Studying Their Reactivity Towards Oxidation

European Journal of Inorganic Chemistry, Volume 28, Issue 1, January 2, 2025.
Olefinic side arms can stabilize copper(I) complexes otherwise susceptible to disproportionation. However, whether and how strongly the complexes are stabilized highly depends on the position and length of the olefinic sidearm. Additionally, the reactivity of the copper(I) complexes towards dioxygen was investigated.
Alexander Granichny, Christian Würtele, Siegfried Schindler   +2 more
wiley   +1 more source

Direct Spectroscopic Confirmation of the Oxygen‐Centered Diradical Character of the Tetraoxidorhenium(VII) Cation [Re(O)4]+

Chemistry–Methods, Volume 4, Issue 12, December 2024.
Highly reactive [ReO4]+ combines rhenium in its highest oxidation state with oxygen‐centered diradical character of its oxygen ligands in the small volume of only one pentaatomic entity. Abstract Mononuclear inorganic diradical species are scarce. Here, we confirm, via X‐ray absorption spectroscopy in the gas phase combined with computational studies ...
Mayara da Silva Santos, Robert Medel, Simon Kruse, Max Flach, Olesya S. Ablyasova, Martin Timm, Bernd von Issendorff, Konstantin Hirsch, Vicente Zamudio‐Bayer, Sebastian Riedel, J. Tobias Lau   +10 more
wiley   +1 more source

Photochemical Synthesis and Characterization of a Uranyl Peroxide Triethylamine N‐Oxide Dimer

European Journal of Inorganic Chemistry, Volume 27, Issue 28, October 1, 2024.
X‐ray diffraction studies on a photochemically synthesized uranyl peroxide complex revealed ⋅OH radical oxidation of a tertiary amine to an amine‐N‐oxide and temperature dependent intermolecular hydrogen bonding interactions with uranyl cations, and the vibrational manifestations thereof were explored using Raman spectroscopy. Abstract A μ‐peroxido‐bis[
Brett Lottes, Korey P. Carter
wiley   +1 more source

Unusual Stability of an End‐on Superoxido Copper(II) Complex under Ambient Conditions

Chemistry – A European Journal, Volume 30, Issue 41, July 19, 2024.
The unusual stability of an end‐on superoxido copper complex, [CuII(Me6tren)(O2⋅−)]+ (Me6tren=tris(2‐dimethyl‐aminoethyl)amine), observed in an oxygen‐enhanced atom transfer radical polymerization (ATRP), was investigated. It was found that the corresponding peroxide complex and the complexes [CuI(Me6tren)(DMSO)]+ and [CuII(Me6tren)(OH)]+ participate ...
Chiara Eleonora Campi, Kostas Parkatzidis, Athina Anastasaki, Siegfried Schindler   +3 more
wiley   +1 more source

Evaluación nutricional y almacenamiento acelerado a 37ºC de mezclas de frejol y maíz fritos Nutritional evaluation and accelerated storage at 37ºC of fried bean and corn mixtures.

Archivos Latinoamericanos de Nutrición, 2003
RESUMEN. El valor nutritivo del maíz y de los frejoles está limitado por la deficiencia en algunos aminoácidos; por ello, la combinación de ambos podría ser muy ventajosa desde un punto de vista nutricional.
Ana María Estévez, Berta Escobar, Isabel Zacarias, María de la Luz Hurtado   +3 more
doaj  

Plant‐based meat analogues marketed in Catalonia: analysis of contaminants, essential elements, microbiological and physicochemical status, dietary intake estimation and health risk assessment

Food Risk Assess Europe, Volume 2, Issue 3, July 2024.
Abstract The latest barometer of food safety in Catalonia conducted by the Catalan Food Safety Agency (ACSA for its initials in Catalan) in 2021 shows that 28.7% of the population consumes meat analogues (substitutes). The main reasons for consuming this type of food are animal welfare, followed by environmental and health reasons.
Martí Nadal Lomas, Nieves González Paradell, Victòria Castell Garralda, Laura Alcalde Sanz, Josep Calderón, Sara Sabaté   +5 more
wiley   +1 more source

OBTENCIÓN Y CARACTERIZACIÓN DE ACEITE DE GIRASOL Y OLIVA OZONIZADOS

Revista CENIC Ciencias Químicas, 2022
Los aceites vegetales ozonizados debido a su capacidad antimicrobiana, son una alternativa importante para el tratamiento de enfermedades de etiología infecciosa en humanos y animales.
Dania Hakim-Rodríguez, Gabriela Guerra-Collazo, Manuel Eduardo Cordero-Hernández, Cheila Cabrera-Pérez, Eliet Veliz-Lorenzo, Lidia Asela Fernández García, Gonzalo Cima Sotolongo   +6 more
doaj  

QUALIDADE FÍSICO-QUÍMICA E MICROBIOLÓGICA DO QUEIJO PARMESÃO RALADO COMERCIALIZADO EM PONTA GROSSA, PARANÁ

Revista do Instituto de Latícinios Cândido Tostes, 2012
O queijo tipo Parmesão ralado está entre os mais consumidos e também entre os mais fraudados do país, visto que a fragmentação facilita a incorporação de diversos adulterantes.
Jéssica Caroline Bigaski Ribeiro, Carolina Rentz Cardoso, Luís Antônio Esmerino, Renata Dinnies Santos, Ivo Mottin Demiate, Alessandro Nogueira   +5 more
doaj   +1 more source

Investigations on Water‐Soluble Copper Complexes with the Sterically Demanding Triazacyclononane Derivative (tBu)2(nPrSO3)Htacn

European Journal of Inorganic Chemistry, Volume 27, Issue 16, June 3, 2024.
Copper(I) and copper (II) complexes with (tBu)2(nPrSO3)Htacn were synthesized and characterized. Focused on the reaction of Cu(II) complexes with H2O2 kinetic investigations in protic solvents were performed. Abstract Related to environmentally friendly productions in the industry, the synthesis of catalysts with designed ligands for solubility in ...
Lars Schneider, Christian Würtele, Siegfried Schindler   +2 more
wiley   +1 more source