Results 31 to 40 of about 2,766 (131)

Unexpected {Pu60} Cage Cluster Units in New Plutonium(VI) Oxido‐Hydroxides

Angewandte Chemie Novit, Volume 2, Issue 1, March 2026.
Plutonium(VI) hydrolysis in strongly alkaline NaCl‐NaOH solutions yields needle‐ and platelet‐like crystals. They are built from unprecedented spherical [(PuO2)60O20(OH)120]40− cages that adopt a truncated dodecahedral (Archimedean) topology. Each {Pu60} cage contains 20 identical trimeric subunits, which self‐assemble from Pu(VI) solution trimers ...
David Fellhauer, Olaf Walter, Jörg Rothe, Kathy Dardenne, Dieter Schild, Roland Meier, Philipp Müller, Yongheum Jo, Xavier Gaona, Marcus Altmaier, Horst Geckeis   +10 more
wiley   +1 more source

Utilização de peróxidos com atividade antiparasitária como agentes anticancerígenos [PDF]

, 2014
Dissertação de mestrado, Ciências Farmacêuticas, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2014Cancro é um termo genérico que se utiliza para designar doenças em que as células se dividem sem controlo, podendo invadir outros tecidos do
Sena, Maria Inês Alves de
core   +1 more source

Copper Complexes with Guanidine‐Based Tripodal Ligands and their Reactivity Toward Dioxygen

Zeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 1, January 6, 2026.
Results on the stabilization of end‐on superoxido copper complexes by applying ligands with guanidine groups. The copper(I) TMG3tren complex (TMG3tren = a tris(2‐aminoethyl)amine ligand modified with guanidine groups) reacts with dioxygen exclusively to form a relatively stable end‐on superoxido complex. In contrast, the related copper(I) tmpa complex (
Frank Mehlich, Natascha Kempf, Julia Stanek, Olga Bienemann, Luisa Träger, Christian Würtele, Sonja Herres‐Pawlis, Siegfried Schindler   +7 more
wiley   +1 more source

Introdução de ligações cruzadas no LLDPE através de processo de extrusão reativa de graftização do vinil-trimetóxi-silano (VTMS) na cadeia polimérica: Efeito das condições de processamento e do sistema reacional Silane grafting and mositure crosslinking of LLDPE by a reactive extrusion process: effect of processing conditions and reaction system

Polímeros, 2011
Embora a reticulação do polietileno efetuada através de processo de extrusão reativa, envolvendo a graftização de silanos vinílicos na cadeia polimérica, seja um processo bastante utilizado industrialmente, poucos estudos têm sido publicados sobre a ...
Alexandre B. Pessanha, Marisa C. G. Rocha, Antonio H. M. F. T. da Silva   +2 more
doaj  

Uncária tomentosa e a lesão renal aguda isquêmica em ratos

Revista da Escola de Enfermagem da USP, 2011
O objetivo deste estudo foi avaliar o efeito renoprotetor do fitoterápico Uncaria tomentosa sobre a lesão renal aguda isquêmica induzida pelo clampeamento dos pedículos renais de ratos.
Maria de Fátima Fernandes Vattimo, Natalia Oliveira da Silva   +1 more
doaj   +1 more source

Computational and Experimental Insights into a Ferric Cumylperoxido Species Stabilized in a Bispidine Scaffold

Zeitschrift für anorganische und allgemeine Chemie, Volume 651, Issue 18, December 10, 2025.
An iron(III)‐cumylperoxido intermediate has been generated that performs electrophilic and nucleophilic reactivity under ambient conditions. Iron‐containing alkylperoxido species are mostly unstable, although these are important reactive intermediates found in metalloenzymes.
Gunasekaran Velmurugan, Gourab Mukherjee, Umesh Kumar Bagha, Chivukula V. Sastri, Peter Comba   +4 more
wiley   +1 more source

Mechanistic Insights and Catalytic Efficiency of a 2,2′‐Bipyridine–Coordinated Peroxidovanadium Complex as a Haloperoxidase Biomimetic

ChemPlusChem, Volume 90, Issue 11, November 10, 2025.
A peroxidovanadium(V) complex mimics vanadium haloperoxidases for eco‐friendly halogenation of organic substrates. Density functional theory studies reveal two major reaction pathways for iodide/bromide oxidation. The catalyst offers high‐yield bromination/iodination of 8‐hydroxyquinoline (73/86%) under mild conditions (30 °C, pH 5.8), and it also ...
Lucas G. Fachini, Enzo V. S. Elisandro, Gabriel B. Baptistella, Rúbia C. R. Bottini, Matteo Briganti, Giovana G. Nunes, Eduardo L. de Sá   +6 more
wiley   +1 more source

ARABIDOPSIS HOMOLOG OF TRITHORAX1 impacts lateral root development by epigenetic regulation of targets involved in root system architecture

New Phytologist, Volume 247, Issue 5, Page 2180-2195, September 2025.
Summary Developmental processes are regulated at multiple levels, including the epigenetic level. Among the epigenetic factors, histone H3 lysine 4 (H3K4) methyltransferases contribute to active transcription of target genes, and here, we explored how the H3K4 methyltransferase ARABIDOPSIS HOMOLOG OF TRITHORAX1 (ATX1) affects Arabidopsis thaliana ...
Selene Napsucialy‐Mendivil, Héctor H. Torres‐Martínez, Gustavo Rodríguez‐Alonso, Diana Marcela Rivera‐Toro, Raúl Alvarez‐Venegas, Marco Adán Júarez‐Verdayes, Svetlana Shishkova, Joseph G. Dubrovsky   +7 more
wiley   +1 more source

Photocatalytic‐Mediated C−H Activation of Toluene Using Copper(I)‐Complexes with Macrocyclic Ligands

European Journal of Inorganic Chemistry, Volume 28, Issue 12, April 17, 2025.
The selective oxidation of toluene to benzaldehyde was successfully carried out via a photocatalytically mediated reaction using copper complexes with macrocyclic ligands and molecular dioxygen. The process demonstrated a high turnover number for the conversion of toluene to benzaldehyde, with no detectable side products.
Christian Noß, Richard Göttlich, Siegfried Schindler   +2 more
wiley   +1 more source

Theoretical Insights into the Oxidation of Substrates by High‐Spin Iron(III)‐Acylperoxido Complexes

European Journal of Inorganic Chemistry, Volume 28, Issue 11, April 9, 2025.
The high‐spin iron(III)‐acylperoxido complex of the thirteen‐membered macrocyclic ligand 13‐TMC is known by experiment to epoxidize olefins and hydroxylate alkanes. A thorough quantum‐chemical study shows that both oxidation reactions follow step‐wise pathways that are initiated by O−O homolysis and followed by the oxidation of the organic substrates ...
Gunasekaran Velmurugan, Peter Comba
wiley   +1 more source