@article {6964,
	title = {REACTIONS OF MUONIUM WITH SIMPLE BIOCHEMICAL SOLUTES IN WATER AND MICELLES},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {69},
	number = {8},
	year = {1991},
	note = {ISI Document Delivery No.: GC235Times Cited: 2Cited Reference Count: 23},
	month = {Aug},
	pages = {1252-1258},
	type = {Article},
	abstract = {Rate constants are reported for the reaction of muonium atoms in water with some 36 organic compounds, many of interest in biology. These k(M) values range from < 10(5) to 7 x 10(10) M-1 s-1, according to the type of reaction involved, with the sugar-phosphate backbones of nucleic acids being at the low end and their bases at the high end. They are compared with corresponding published H-atom data (k(H)), where possible, and show kinetic-isotope-effects ranging over five orders of magnitude. Since all k(H) data were obtained at pH = 1, while k(M) values refer to pH approximately 7 of the natural state, the pH-dependence of k(M) was examined in representative cases. The changes found result from protonation of the solute rather than a changed reactivity of Mu on being converted to MuH+. On localizing the solutes in the hydrophobic phase of dilute micelles, the reactivity of Mu was again measured (k(M(mic))). The resulting "enhancement" factor was considered in terms of: the reaction mechanism, its dependence on microenvironment (solvation), and the concentrating effect of mutual confinement to small sections of a biphasal system.},
	keywords = {BIOCHEMICALS, HYDRATED ELECTRONS, HYDROGEN-ATOMS, kinetic isotope effects, micelles, muonium, radicals, SPIN ROTATION},
	isbn = {0008-4042},
	url = {<Go to ISI>://A1991GC23500013},
	author = {Barnabas, M. V. and Walker, D. C.}
}
