The Mulliken Hund electron correlation rules predict fifty-four superoxide states and eighty-seven nitric oxide anion states dissociating to the lowest limits. Before 2000, only a few of the experimental electron affinities of  O2, 1.070(2) to 0.050(2) eV; NO, 0.86(2) to 0.026(5) eV were reported. Since then we have determined the 27 bonding electron affinities of O2 using the temperature dependence of negative ion mass spectrometry, electron capture detector responses and cyclic voltammetry. These are consistent with literature values in gas, solid and liquid phases. We used these values and relative bond orders to estimate the 27 antibonding electron affinities to calculate 54 one dimentional pontential energy curves. Here we report new hyperfine states of superoxide using the hyperfine energies of the atomic oxygen anion and the temperature dependence of cyclic voltammograms .

Electrochemical determination of new hyperfine electron affinities of oxygen

248th National Meeting (2014)

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