Results 21 to 30 of about 188 (86)

Copper Complexes with Arylated Triethylenetetramine Ligands: Reactivity Toward Dioxygen and Peroxides

European Journal of Inorganic Chemistry, Volume 29, Issue 17, 17 June 2026.
Here, we describe new Cu(I)/Cu(II) complexes based on arylated tren ligands and investigate their reactivity toward O2 and peroxides. Low‐temperature–stopped flow studies revealed the formation of transient copper–oxygen species, including superoxido, hydroperoxido, and alkylperoxido intermediates.
Chiara Eleonora Campi, Christian Würtele, Siegfried Schindler   +2 more
wiley   +1 more source

Reactivity of the Iron Complexes with the Macrocyclic Ligand 5,5,7,12,12,14‐Hexamethyl‐1,4,8,11‐Tetraazacyclotetradecane (tet) Toward Dioxygen

Zeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 9, 3 June 2026.
The complex [(tet a)FeII(OTf)2] reacts with dioxygen first to a superoxido intermediate and in a consecutive reaction to the corresponding iron–oxido complex. The reactions of the iron complexes [(tet a)FeII(OTf)2] and [(tet b)FeII](OTf)2 (tet = 5,5,7,12,12,14‐hexamethyl‐1,4,8,11‐tetraazacyclotetradecane) with dioxygen were investigated.
Kevin Keller, Jakob Möbs, Siegfried Schindler   +2 more
wiley   +1 more source

Unraveling the Electron Transfer Mechanism in the Reduction of Bis(µ‐Oxido) Dicopper Complexes

ChemistryEurope, Volume 4, Issue 6, June 2026.
We elucidate the electron transfer mechanism in bis(µ‐oxido) dicopper complexes stabilized by guanidine ligands. Kinetic and spectroscopic analyses reveal two sequential reduction steps without isomerization to µ‐η²:η²‐peroxido species. Marcus and density functional theory studies show ligand‐dependent reorganization energies and a unique two‐spin–four‐
Regina Schmidt, Leander Weinelt, Larissa Laurini, Nils Jannis Becker, Alexander Hoffmann, Sonja Herres‐Pawlis   +5 more
wiley   +1 more source

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

Efeito da utilização de Butil-Hidroxianizol como agente antioxidante em biodiesel de óleos residuais

Vetor, 2016
Um dos desafios a serem superados nos próximos anos, buscando ampliar a utilização de biodiesel no mercado brasileiro, trata da sua estabilidade à oxidação.
Anderson Favero Porte, Pedro Barbosa Mello, Rosana de Cássia Souza Schneider   +2 more
doaj   +4 more sources

New solutions against Legionella Tratamientos para Legionella: nuevas alternativas

Revista de Salud Ambiental, 2004
Searching for new solutions for disinfection OX-CTA researches and develops effective products and accurate application protocols improving those traditionally and widely spread.According to the results OX products, based on peroxides, are a good ...
Yolanda Vergara Larrayad, Avelina Bellostas Ara   +1 more
doaj  

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

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

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