Pulse radiolysis of dioxane and dioxane + water mixtures. Yield of free solvated electrons and kinetics of the radical reactions

1972 ◽  
Vol 76 (9) ◽  
pp. 1279-1283 ◽  
Author(s):  
Shamim A. Chaudhri
Keyword(s):  
Pulse Radiolysis ◽  
Radical Reactions ◽  
Solvated Electrons ◽  
Kinetics Of

Spectrum, Kinetics, and Radiation Chemical Yield of Solvated Electrons in Hexamethylphosphoric Triamide

1973 ◽  
Vol 51 (23) ◽  
pp. 3905-3913 ◽  
Author(s):  
Eric A. Shaede ◽  
Leon M. Dorfman ◽  
Garry J. Flynn ◽  
David C. Walker
Keyword(s):  
Pulse Radiolysis ◽  
Chemical Yield ◽  
Molar Absorptivity ◽  
Solvated Electrons ◽  
Experimental Conditions ◽  
Hexamethylphosphoric Triamide ◽  
Radiation Chemical ◽  
Optical Absorption Band ◽  
Bromide Ion ◽  
Kinetics Of

The spectrum, yield, and kinetics of solvated electrons in hexamethylphosphoric triamide were investigated by the pulse radiolysis method. The optical absorption band is in the infrared with a maximum at 2200 ± 100 nm. The molar absorptivity at this maximum is (3.2 ± 0.5) × 104 M−1 cm−1, and the oscillator strength for the transition is estimated to be f = 0.7 ± 0.2. A free ion yield of G(es−) = 2.3 + 0.4 solvated electrons/100 eV was determined from the observed yields of anthracene and pyrene radical anions formed by electron attachment.Kinetic studies provided values of the rate constants for the reaction of solvated electrons with anthracene and N2O. The decay mechanism of the solvated electrons in the absence of added solutes was found to be complex, and the half-life (in the range of 2 to 50 μs) was dependent on experimental conditions. A second transient species, absorbing at wavelengths below 500 nm, was observed but not identified. In solutions containing bromide ion the species Br2− was observed. The pulse radiolysis of stable solutions of es−, formed by dissolving sodium metal in HMPA, is also reported.

Kinetics of radical reactions in freons

1998 ◽  
Vol 232 (1-2) ◽  
pp. 75-78 ◽  
Author(s):  
J. Kowalczyk ◽  
A. Jówko ◽  
M. Symanowicz
Keyword(s):  
Radical Reactions ◽  
Kinetics Of
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