Topology parameters, including electron density (ρ), Laplacian electron density (∇2ρ), potential energy density [V(r)], total energy density [H(r)], and hydrogen bonding energy [EHB(kcal mol−1)] at the bond critical point of non-covalent interactions (D⋯HA) for conformers 1A and 1B at the B3LYP/6-31++G** level.
Compound | Interactions | BCP | d (Å) | ∠D⋯HA | ∇2ρ | V(r) | G(r) | H(r) | E HB |
---|---|---|---|---|---|---|---|---|---|
1A | |||||||||
N⋯HO | (3, −1) | 1.68 | 146.77 | 0.1303 | −0.0452 | 0.0419 | −0.0063 | −14.18 | |
ArH⋯N | (3, −1) | 2.19 | 129.10 | 0.0637 | −0.0131 | 0.0145 | −0.0014 | −4.11 | |
1B | |||||||||
N⋯HO | (3, −1) | 1.59 | 166.51 | 0.1295 | −0.0581 | 0.0453 | −0.0129 | −18.22 | |
ArH⋯N | (3, −1) | 2.25 | 102.36 | 0.0812 | −0.0137 | 0.0170 | −0.0033 | −4.39 |