The difference in energy of the two low-lying 87 Rb p-type orbitals in 87 Rb-ethene is more pronounced and is due to one of the low-lying p-type orbitals lying along the axis of ethene (C=C), with the other low-lying p-type orbital lying across the axis of ethene. The 2 2 A state has the 87 Rb p-type orbital 5p y lying along the ethene axis (C=C) and has the lower transition energy, with the 5p x orbital lying across C=C and that state, 3 2 A, has the higher transition energy of the two states. the three template coat molecules with 87 Rb. For the energy shifts of the ground 5 2 S state (1 2 A) of 87 Rb as function of ground-state || ⃗ E||, the shift is greatest for MeTS followed by ethene and then ethane (Figure ). For the two lower-lying excited states, 2 2 A and 3 2 A, the negative shifts are greatest for ethene, followed by MeTS and then ethane (in red, green and blue, respectively). The third and higher-lying excited state, 4 2 A, undergoes a positive shift with the largest shift with ethane, followed by ethene and then MeTS. The transition energies to the three 5 2 P excited states of 87 Rb follow similar trends, with the transition energies to the two lower-lying excited states undergoing the largest negative shifts with ethene, followed by ethane and then by MeTS (Figure (b)). At || ⃗ E|| ≤ 0.0015 au, the shifts due to ethane are comparable to MeTS. For the third higher-lying excited state, the greatest positive shift is predicted for 87 Rb interacting with ethane, followed by ethene and then MeTS. The above discussion for each coat template molecule indicates that the two lower-lying excited states of 87 Rb (with a p-type orbital orthogonal to the axis of interaction) are stabilised in the electric field of the coat molecule, whereas the third higher-lying excited state (with a p-type orbital along the axis of interaction) is destabilised.