Hexakis(NϪallylthiourea)tetracopper(I) Tetratrifluoromethanesulfonate, [Cu 4 {CH 2 ϭCHCH 2 NHC(S)NH 2 } 6 ](CF 3 SO 3 ) 4 (sp.gr. P2 1 /n, a ϭ 13.5463(8), b ϭ 24.129 (2), c ϭ 19.128(1) Å , β ϭ 108.053(6)°, Z ϭ 4, R ϭ 0.0440 for 13548 unique reflections) was obtained by reduction of Cu(CF 3 SO 3 ) 2 with excess of NϪallylthiocarbamide in benzene medium. Four crystallographical
Electrochemical hydrogen evolution on oxidized electrodes of the amorphous metallic alloys Fe82Nb2B14RE2 (RE = Tb, Dy) in 5.0 M KOH aqueous solution in the temperature range 298-313 ± 0.5 K has been investigated. A sample Fe84Nb2B14 was used as reference alloy. The highest corrosion resistance during multiple scanning of the potential exhibited the alloys doped by terbium and dysprosium. High values of the exchange currents, characterizing catalytic ability and corrosion resistance characterize Fe82Nb2B14RE2 amorphous alloys as promising electrode materials for hydrogen evolution reaction.
Nanocrystallization of iron-based amorphous alloys Fe 82 Nb 2 B 14 RE 2 , where RE = Y, Gd, Tb, Dy, was studied by differential thermal analysis (DTA) in the temperature range from 300 K to 1300 K. The structure before and after the first stage of crystallization (~810 K) was checked by X-ray diffraction (XRD). The measurements allowed determining the temperature and activation energy of nanocrystallization. In addition, the influence of magnetization in an alternating magnetic field on the nanocrystallization process in the amorphous alloy Fe 82 Nb 2 B 14 Gd 2 was studied. The electrochemical changes caused by the alternating magnetic field were investigated by potentiometry and voltammetry. Amorphous and nanocrystalline alloys / Nanocrystallization / Differential thermal analysis / Alternating magnetic field / Electrochemical properties
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