On the basis of these spectroscopic and theoretical analyses, 1 is best described as containing an intermediate spin Fe(II) ion, whereas for the corresponding cobalt complex, oxidation states describing a d6 (CoIII) or d7 (CoII) electron configuration cannot be unambiguously assigned. The ...
Multifrequency electron paramagnetic resonace (EPR) spectroscopy and electronic structure calculations were performed on [Co4O4(C5H5N)4(CH3CO2)4]+ (1+), a cobalt tetramer with total electron spin S = 1/2 and formal cobalt oxidation states III, III, III, and IV. The cuboidal arrangement ...
The g-tensor values near g ∼ 2 indicate a significant electron localization on the ligand. Low g-tensor values were previously reported for CoIII–O2− superoxo complexes.50, 51, 52 We cannot exclude that additional structure in the signal, in particular around gzz, belongs to a rather...
Low-magnification scanning electron microscope (SEM) images and energy-dispersive X-ray spectroscopy (EDX) elemental mapping show a uniform distribution of elemental Cu and Au on PTFE nanofibers, accompanied by loosely distributed Au nanoparticles also on the nanofibers (Fig.2a, b). The bright-field...
The electrocatalytic HzOR activity is evaluated in a typical three-electrode configuration using Hg/HgO (containing 1.0 M KOH solution) as reference electrode and graphite rod as the counter electrode in 1.0 M of KOH/0.1 M of N2H4electrolyte. The optimal doping level and annealing ...
The magnetic interaction between Co@Ga is ferromagnetic,and we estimated the Curie temperature of about 410 K for the S(12) configuration. The ferromagnetic coupling mechanism is discussed in this paper. The research results shed light on the potential of the system as a good candidate for ...
According to molecular orbital (MO) theory, CO activation on the metal surface results from electron donation (from CO to the metal via the 5σ MO) and back-donation (from the metal to CO via the 2π* MO) [12,13]. When CO adsorbed on the metal surface, the metal-carbon bond is ...
It is formed by the rapid co- ordination of Ph 3P to cobalt(III) in the μ-peroxo precursor [(OPD) 2Co—O 2—Co(OPD) 2] 4+. The relative contribution of OPD dehydrogenation under catalytic conditions depends on the OPD to ... S Németh,LI Simándi - 《Journal of Molecular Catalysi...
Electron beam irradiation presents a powerful method for inducing controlled structural modifications in materials, offering a means to precisely manipulate properties. Through controlled exposure to electron beams, it is possible to control oxygen vacancies within metal oxide nanoparticles, leading to intrigu...
y(in which A is a pure element, and BCmis a stable binary compound in the B–C system). Also, about 35% and 11% are found exclusively in (ABk)x(ACl)yor Ax(BCm)ycategory, respectively. It is reasonable that atoms always seek to adopt the most stable electronic configuration. ...