Abstract
Fluorine-18 exchange between carbonyl fluoride and Group I fluorides (Cs–Li inclusive) varies in the order Cs > Rb K > Na, Li at 423 K, and in the order Cs > Rb K, Na, Li at 323 K. Exchange is enhanced in the presence of acetonitrile or diglyme, the effect of the latter being particularly marked for LiF and NaF, but not in the presence of benzene or diethyl ether. The results are discussed in terms of the solvents' properties.
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