Electronic Potential Energy Curves of the Mg2 Excited Σ and Π States

Figure 1. Potential energy curve for the excited valence states of Mg₂. The dashed portions of the ¹Π_g and 2 ¹Σ_g⁺ curves indicate regions that have not been investigated directly, but are estimated by joining known short-range and long-range behavior.

NIST Electronic potential energy curve tables

Reference

Figure 2. Excited triplet and singlet potential curves of the Mg₂ dimer dissociating to ³P + ¹S and ¹P + ¹S asymptotics as a function of internuclear separation obtained by ab initio complete-active-space and coupled-cluster method.

Molecular constants

Reference