Sonochemical degradation of cyclic nitroxides in aqueous solution
Document Type
Article
Date of Original Version
1-1-2012
Abstract
The sonochemical degradation of eight five- and six-membered nitroxides has been studied by EPR spectroscopy after exposure to ultrasound at a frequency of 354 kHz in argon-saturated aqueous solution. Concentration vs. time profiles do not follow a simple rate law. Octanol/water partition functions have been determined for all eight nitroxides, and an excellent linear correlation has been found between initial decomposition rates and hydrophobicity (log K octanol/water). Variation of initial rate with concentration was investigated for one compound (TEMPONE) and is largely consistent with an equilibrium distribution of substrate between bulk solution and the gas/liquid interface. © 2012 Elsevier B.V. All rights reserved.
Publication Title, e.g., Journal
Ultrasonics Sonochemistry
Volume
19
Issue
5
Citation/Publisher Attribution
Kirschenbaum, Louis J., and Peter Riesz. "Sonochemical degradation of cyclic nitroxides in aqueous solution." Ultrasonics Sonochemistry 19, 5 (2012). doi: 10.1016/j.ultsonch.2012.01.014.