Fourier Transform EPR (Electron Paramagnetic Resonance) of chemical reactions

Technical Report · Mon Jan 01 04:00:00 EST 1990

DOI:https://doi.org/10.2172/6985694· OSTI ID:6985694

Massoth, R. J.; Bowman, M. K.

Transient free radicals formed by laser photolysis have been measured in solution by Fourier Transform Electron Paramagnetic Resonance. The high resolution spectra positively identify the initial free radicals formed from the quenching of triplet duroquinone by triethylamine in solution. The spectra were used to follow the kinetics of the free radicals from less than 10{sup -8} s to 10{sup -2} s. The kinetics are well described by a model based on simple chemical reactions and triplet mechanism chemically-induced dynamic electron polarization. Numerical estimates are obtained for ratios of the rates of various reaction steps. 5 refs., 2 figs.

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6985694
• Report Number(s): ANL/PPRNT-90-200; ON: DE90008703
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AMINES
AROMATICS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DECOMPOSITION
ELECTRON SPIN RESONANCE
EPR SPECTROMETERS
EXCIMER LASERS
GAS LASERS
KINETICS
LASERS
MAGNETIC RESONANCE
MEASURING INSTRUMENTS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
QUINONES
RADICALS
REACTION KINETICS
RELAXATION
RESONANCE
SPECTROMETERS
SPIN-LATTICE RELAXATION