Accurate double many-body expansion potential energy surface of HS<sub>2</sub>A<sup>2</sup>A′) by scaling the external correlation

Accurate double many-body expansion potential energy surface of HS₂A²A′) by scaling the external correlation

Zhang Lu-Lu, Song Yu-Zhi^†,, Gao Shou-Bao, Zhang Yuan, Meng Qing-Tian^‡,

Contour plots of HS₂ (A²A′) potential energies for the four H–S–S angles (a) 0°, (b) 45°, (c) 90°, and (d) 135°. Contours are equally spaced by 0.006E_h, starting from −0.1668E_h in panel (a), −0.1977E_h inpanel (b), −0.2294E_h in panel (c), and −0.2006E_h in panel (d).