Globally accurate ab initio based potential energy surface of H2O+( X 4A″)*
Song Yu-Zhi†, Zhang Yuan, Zhang Lu-Lu, Gao Shou-Bao, Meng Qing-Tian
       
Contour plot for bond stretching in [H–O–H]+ linear configuration. Contours equally spaced by 0.004 E h, starting at −0.1158 E h.