A DFT and Semiempirical Model-Based Study of Opioid Receptor Affinity and Selectivity in a Group of Molecules with a Morphine Structural Core

Table 14

Squared correlation coefficients for the variables appearing in (21).

	𝑆^𝐸1(HOMO−1)	𝑆^𝑁11	𝐹11(LUMO)	𝜔15
𝑆^𝐸1(HOMO−1)	1.0
𝑆^𝑁11	0.008	1.0
𝐹11(LUMO)	0.02	0.0004	1.0
𝜔15	0.41	0.004	0.05	1.0