content_image/336540.jpg
to an infinite separation of all electrons and nuclei. Because the absolute energy of the PES of Ref. [11] is unknown, the origin of this surface is chosen in such a way that the asymptotic energy of the infinite separation between H$_{2}$( r =1.4 a.u.) and H − is the same as in the present study. 

<img src='content_image/336540.jpg'>

