Browsing by Subject "EPR"

Now showing items 1-8 of 8

    • Cyclic voltammetry and electron paramagnetic resonance study of the electrochemical reduction of p-nitrobenzyl ... 
      Norambuena, E.; Olea, C.; Aliaga, C. (1993)
      EPR has been used to investigate the radicals postulated as intermediates in the intramolecular electron transfer and dehalogenation of p-nitrobenzyl bromide (p-NBBr) in DMSO and DMFA at room temperature. The electrochemical ...
    • Formation of radical anions by electrochemical reduction of nitroimidazoles in aprotic solvents and mixed solvent 
      Norambuena, E.; Olea Azar, Claudio (Marcel Dekker Inc.Taylor & Francis, 1996)
      The EPR spectra of radicals obtained by electrohytical reduction of 2-nitroimidazole and 4-nitroimidazole were measured in mixed solvents. The behavior of the nitrogen coupling constants with the solvent composition is ...
    • Magnetic resonance study of a vanadium pentoxide gel 
      Nascimento, Otaciro R.; Magon, Claudio J.; Lima, Jose Fernando; Donoso, Jose Pedro; Benavente Espinosa, Eglantina; Paez, Jaime; Lavayen, Vladimir; Santa Ana, María Angélica; González Moraga, Guillermo (2008)
      In this work we report results from continuous-wave (CW) and pulsed electron paramagnetic resonance (EPR) and proton nuclear magnetic resonance (NMR) studies of the vanadium pentoxide xerogel V2O 5:nH2O (n ≈ 1.6). The low ...
    • Magnetic resonance study of vanadium pentoxide gels 
      Nascimento, Otaciro R.; Magon, Claudio José; Lopes, L. V. S.; Donoso, José Pedro; Benavente Espinosa, Eglantina; Páez, J.; Lavayen, Vladimir; Santa Ana, María Angélica; González Moraga, Guillermo (TAYLOR & FRANCIS LTD, 2006)
      This work describes an Electron Paramagnetic Resonance (EPR) and Nuclear Magnetic Resonance (NMR) study of the vanadium pentoxide xerogel V2O5:nH(2)O with n approximate to 1.8 Experiments were performed in the temperature ...
    • New insights into the antioxidant activity of hydroxycinnamic and hydroxybenzoic systems: Spectroscopic, ... 
      Mura, F.; Silva, T.; Castro, C.; Borges, F.; Zuñiga, M. C.; Morales, J.; Olea Azar, Claudio (Informa Healthcare, 2014)
      © 2014 Informa UK, Ltd. A series hydroxycinnamic and gallic acids and their derivatives were studied with the aim of evaluating their in vitro antioxidant properties both in homogeneous and in cellular systems. It was ...
    • Observation of stable 17 e iron(III) cyclopentadienyl radical complexes 
      Diaz, Eloisa (Sociedad Chilena de Quimica, 1999)
      The EPR spectra of a series of mononuclear complexes [CpFe(dppe)SR]PF6 R = C6H5 (1), C3H7 (2), p-C6H4Br (3) and the binuclear [CpFe(dppe)-S-CH2CH2-S-CpFe(dppe)](PF6) 2 (4) were measured. All the paramagnetic complexes ...
    • Physical properties of new ordered bimetallic phases M0.25Cd0.75PS3 (M = Zn-II, Ni-II, Co-II, Mn-II) 
      Fuentealba Castro, Pablo; Olea Azar, Claudio; Aguilar Bolados, H.; Audebrand, N.; Santana, R. C. de; Doerenkamp, C.; Eckert, H.; Magon, C. J.; Spodine Spiridonova, Evgenia (Royal Society of Chemistry, 2020)
      Four bimetallic phases of the thiophosphate family have been synthesized by the cationic exchange reaction using a freshly prepared K0.5Cd0.75PS3 precursor phase and methanolic solutions of nitrates of the divalent cations ...
    • Spin Trapping: An Essential Tool for the Study of Diseases Caused by Oxidative Stress 
      Barriga González, Germán; Olea Azar, Claudio; Zúñiga López, María C.; Folch Cano, Christian; Aguilera Venegas, Benjamín; Porcal, Williams; González, Mercedes; Cerecetto, Hugo (Bentham Science Publ, 2015)
      Electron spin resonance (ESR), called also electron paramagnetic resonance (EPR) together with the spin trapping technique, has allowed us to study and understand how free radicals are involved in various pathologies. In ...