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. 2023 Jun 19;9(6):e17280. doi: 10.1016/j.heliyon.2023.e17280

Table 2.

Corrected solvation energies by ZPVE and by the total non-electrostatic terms of free base, cationic and hydrochloride species of tacrine in aqueous solution by using the B3LYP/6-311G* method.

TACRINEa
Solvation energy (kJ/mol)
B3LYP/6-311G* methoda
Species ΔGZPVE ΔGne ΔGc
Free base −43.54 9.40 −52.94
Cationic (Form I) −214.56 15.42 −229.98
Cationic (Form II) −285.12 13.79 −298.91
Hydrochloride (Form I) −116.98 15.51 −132.49
Hydrochloride (Form III)c −146.10 15.92 −162.02
B3LYP/6-31G* method
Agents Free base Cationic Hydrochloride
Amantadineb −20.32 −273.24 −109.01
Morphineb −60.91 −309.19 −144.74
Cocaineb −71.26 −255.24 −138.14
Scopolamineb −75.47 −310.34 −122.74
Heroinb −88.67 −323.14 −161.94
a

This work.

b

From Ref. [26,48].

c

The form III of HCl was only corrected by non-electrostatic terms (see text).