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Spectra of propylperoxy radicals and rate constants for mutual interaction
Author(s) -
Adachi Hiroyuki,
Basco Norman
Publication year - 1982
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550141006
Subject(s) - chemistry , radical , reaction rate constant , flash photolysis , kinetic energy , absorption spectroscopy , oxygen , photochemistry , propane , spectral line , spectroscopy , oxygen atom , analytical chemistry (journal) , kinetics , molecule , organic chemistry , physics , quantum mechanics , astronomy
The flash photolyses of azo‐ n ‐propane and azoisopropane in the presence of oxygen have been studied by kinetic spectroscopy. The transient absorption spectra observed in the region of 210–290 nm are assigned to the n ‐propylperoxy and isopropylperoxy radicals. For the n ‐propylperoxy radical, ε max = 1148 ± 29 L/mol cm at 242.5 nm and for the isopropylperoxy radical, ε max = 1273 ± 75 L/mol cm at 240 nm. The rate constants for the mutual reactions (7) 2RO 2 · → products were measured to be k 7 = (2.0 ± 0.2) X 10 8 L/mol s for the n ‐propylperoxy radical and k 7 = (7.8 ± 2.2) X 10 5 L/mol s for the isopropylperoxy radical.