Table 31. H2 16O (H16OH): Improved ab initio Potential Energy Surface (PES) from morphing procedure using highly excited energy levels

2012 ◽  
pp. 119-119
Author(s):  
G. Guelachvili ◽  
N. Picqué
Keyword(s):  
Potential Energy ◽  
Potential Energy Surface ◽  
Ab Initio ◽  
Energy Surface ◽  
Energy Levels

Calculation of Rotation–Vibration Energy Levels of the Water Molecule with Near-Experimental Accuracy Based on an ab Initio Potential Energy Surface

2013 ◽  
Vol 117 (39) ◽  
pp. 9633-9643 ◽  
Author(s):  
Oleg L. Polyansky ◽  
Roman I. Ovsyannikov ◽  
Aleksandra A. Kyuberis ◽  
Lorenzo Lodi ◽  
Jonathan Tennyson ◽  
...  
Keyword(s):  
Water Molecule ◽  
Potential Energy ◽  
Potential Energy Surface ◽  
Ab Initio ◽  
Energy Surface ◽  
Energy Levels ◽  
Vibration Energy ◽  
Experimental Accuracy

scholarly journals Computational study of the rovibrational spectrum of H2O-HF

2021 ◽  
Author(s):  
Dominika VIGLASKA ◽  
Xiao-Gang Wang ◽  
Tucker CARRINGTON ◽  
David Tew
Keyword(s):  
Experimental Data ◽  
Potential Energy ◽  
Potential Energy Surface ◽  
Ab Initio ◽  
Energy Surface ◽  
Computational Study ◽  
Energy Levels ◽  
Dissociation Limit ◽  
Lanczos Algorithm ◽  
Vibrational States

In this paper we report rovibrational energy levels, transition frequencies, and intensities computed for H2O-HF using a new ab initio potential energy surface and compare with available experimental data. We use the rigid monomer approximation. A G4 symmetry-adapted Lanczos algorithm and an uncoupled product basis are employed. The rovibrational levels are computed up to J = 4. The new analytic 9-D potential is �t to 39771 counterpoise corrected CCSD(T)(F12*)/augcc- pVTZ energies and reduces to the sum of uncoupled H2O and HF potentials in the dissociation limit. On the new potential better agreement with experiment is obtained by re-assigning the R(1) transitions of two vibrational states.

The ab initio potential energy surface and vibrational-rotational energy levels of X 2Σ+ MgOH

2002 ◽  
Vol 117 (4) ◽  
pp. 1529-1535 ◽  
Author(s):  
Jacek Koput ◽  
Stuart Carter ◽  
Kirk A. Peterson ◽  
Giannoula Theodorakopoulos
Keyword(s):  
Potential Energy ◽  
Potential Energy Surface ◽  
Ab Initio ◽  
Energy Surface ◽  
Energy Levels ◽  
Rotational Energy
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