An abnormal phenomenon on O-2(a(1)Delta) deactivation by deuterated alcohols

The deactivation rate constants (k(Delta)) of O-2(a(1)Delta) by several gaseous alcohols were measured using a quasi-static method. The results indicate that the gaseous k(Delta) values for normal alcohols are smaller than their corresponding liquid-phase data, well consistent with Schmidt's model. However, for deuterated alcohols, an abnormal phenomenon that their gaseous k(Delta) values are evidently larger than their corresponding liquid-phase data was first observed. It is likely related to the O-D bonds in their molecules which can form more stable liquid-phase clusters via intermolecular hydrogen bonds and exhibit different vibrational constants in gas and liquid phase. (C) 2013 Elsevier B. V. All rights reserved.