No abstract

No abstract

The interaction between triplet benzophenone-4-carboxylate (3BC) and some inorganic anions, X", has been studied by laser flash photolysis over a wide range of anion concentration (up to 6 M), at pH 11 and constant ionic strength. Spectra and extinction coefficients of 3BC and BC1 89" radical were determined by using the benzophenone actinometer. Triplet lifetime measurements gave primary interaction rate constants, kf-(M_1 s'1), close to diffusion controlled for iodide, thiocyanate, and azide (k ~2 X 12109), somewhat less for bromide (2 X 108) and very low for chloride (<106). Radical yields, 0.1 M, <¿-r increases with [X"] and equivalent amounts of BC'" and X2" radicals are formed, including N6~. At high anion concentrations, plots of versus [X"]"1 are linear. Limiting

No abstract

No abstract