Rearrangements of Ammonium Nitrate Cluster Ions with High Internal Energy
نویسندگان
چکیده
Sputtering of condensed-phase ammoniumnitrate yields an extensivedistribution of negative cluster ions of the form [(NH4N03),N03]-, n 2 3. Collision-induced dissociation of mass-selected cluster ions suggests that the first two members of the series, n = 1 and n = 2, are missing because the ions rearrange to lose one or more ammonia molecules. Gradient-corrected density-functional calculations show that NH4N03 is strongly hydrogen bonded and that [(NH,N03)N03]has no hydrogen bonds, consistent with this ion rearranging to lose NH3 to form the strongly hydrogen-bonded ion [H(N03),]-.
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