ANALYSIS OF DPPH AND MnCl₂ USING ELECTRON PARAMAGNETIC RESONANCE (EPR) SPECTROSCOPY
DOI:
https://doi.org/10.47611/jsrhs.v11i4.3473Keywords:
EPR Spectroscopy, Electron spin resonance spectroscopy, Diphenyl Picrylhydrazyl (DPPH), Magnesium (II) ChlorideAbstract
EPR spectroscopy, in a constant-frequency field-swept experiment, was used to determine the resonant magnetic field, g-factor, line width, and hyperfine constant for diphenyl picrylhydrazyl at room temperature and manganese (II) chloride at cryogenic temperatures (using liquid nitrogen). Diphenyl picrylhydrazyl was determined to be a free radical, indicated by a g-factor of 2.022, with a resonant magnetic field of 3.23 kG at a microwave frequency of 9.14 GHz. The manganese (II) chloride was found to have six signal peaks, indicating hyperfine interaction of a nucleus with non-zero spin with unpaired electrons (spin was determined to be 5/2).
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