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  • Title: Global ab initio potential energy surfaces for both the ground (X̃1A') and excited (Ã1A'') electronic states of HNO and vibrational states of the Renner-Teller Ã1A''-X̃1A' system.
    Author: Li A, Han H, Xie D.
    Journal: J Chem Phys; 2011 Sep 14; 135(10):104304. PubMed ID: 21932890.
    Abstract:
    The global potential energy surfaces for both the ground (X̃(1)A(')) and excited (Ã(1)A('')) electronic states of the HNO molecule have been constructed by three-dimensional cubic spline interpolation of more than 17,000 ab initio points, which have been calculated at the internal contracted multi-reference configuration interaction level with the Davidson correction using an augmented correlation-consistent polarized valence quadruple zeta basis set. The low-lying vibrational energy levels for the two electronic states of HNO have also been calculated on our potential energy surfaces including the diagonal Renner-Teller terms. The calculated results have shown a good agreement with the experimental vibrational frequencies of HNO and its isotopomers.
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