40936-17-2Relevant academic research and scientific papers
ESR study of spin adducts of the direct electrocatalytic decomposition of light aliphatic alcohols in a polymer electrolyte fuel cell
Kadirov,Valitov,Nizameev,Kadirov,Mirkhanov
experimental part, p. 1543 - 1548 (2011/05/03)
Spin adducts of methanol and ethanol electrocatalytic oxidation were detected by the spin trap method using a tiny H2/O2 fuel cell (FC) designed for ESR in situ with a Nafion/Pt membrane electrode assembly. Spin adducts of intermediates of the direct electrooxidation of ethanol, which have not been observed earlier, were obtained by the variation of oxidation conditions, in particular, the FC potential. The work of the FC was controlled by monitoring the diagnostic curves potential3-current density, power density3-current density, and efficiency-power density.
Synthesis and Plane Selective Spin Trapping of a Novel Trap 5,5-Dimethyl-3-(2-ethoxycarbonylethyl)-1-pyrroline N-oxide
Zhang, Yong-Kang,Lu, Dao-Hui,Xu, Guang-Zhi
, p. 1075 - 1083 (2007/10/02)
A novel cyclic nitrone spin trap 5,5-dimethyl-3-(2-ethoxycarbonylethyl)-1-pyrroline N-oxide has been prepared and its ability to trap a series of transient free radicals has been investigated.This nitrone scavenges free radicals to give persistent nitroxides, e.g., the half life-times of hydroxyl radical adducts and tert-butoxy radical adducts in benzene >30 min, and the life-time of acetyl adducts >60 min. The EPR spectrum of 2,2-dimethyl-4-(3-hydroxy-propyl)pyrrolidinyl-1-oxyl aminoxyl shows that the hyperfine splitting constants of two β-hydrogens are equal to 14.58 G and 23.29 G respectively, i.e., the two β-hydrogens are not magnetically equivalent.Radical addition to the nitrone is probably plane selective affording only one of the two possible geometric isomer pairs of the spin adduct nitroxides.The trans approach mechanism is proposed through configuration and conformation analysis.
