Abstract

Anharmonic rovibrational numbers and densities of resonance states of HO 2 are determined for a number of potential energy surfaces and employing a variety of methods. It is shown that the results present smooth analytical continuations of the expressions derived for the bound states [Part II of this series, J. Troe, V.G. Ushakov, Chem. Phys. 346 (2008) 186] and that no major changes of these expressions arise at the energies where the dissociations to H + O 2 and HO + O open up. The results are also used to test the empirical local mode model of part I of this series [J. Troe, Chem. Phys. 190 (1995) 381] which allows one to approximately predict anharmonic densities of states without using explicit potential energy surfaces.

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