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An improved potential energy surface for the degenerate rearrangement of (HF)2

✍ Scribed by William C. Necoechea; Donald G. Truhlar


Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
467 KB
Volume
248
Category
Article
ISSN
0009-2614

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✦ Synopsis


We report a new potential energy surface for the (HF) 2 van der Waals molecule and quantum mechanical nine-dimensional eigenvalue calculations of vibrational energy levels on this surface. The new surface has been adjusted to give an accurate tunneling splitting but is otherwise based on the SQSBDE potential energy surface of Quack and Suhm. We obtain a ground-state dissociation energy of 1076.1 cm-] and a ground-state tunneling splitting of 0.65 cm-1, in good agreement with the experimental values of 1062 cm-~ and 0.659 cm-1, respectively.


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