Figure 9.
Rotational energy curves about the N—CG bond in N-(tetrahydro-2H-pyran-3-yl) acetamide (A), B3LYP/6-31++G(2d,2p) (▲), GLYCAM06 (●), H1—CG—N—H (V1 = 0.0 kcal/mol) and H1—CG—N—C (V1 = −0.17 kcal/mol), in vacuum. PMF-WHAM analysis for the CG—CG—N—C sequence in N-(tetrahydro-2H-py-ran-3-yl) acetamide, H1—CG—N—H (V1 = 1.0 kcal/mol) and H1—CG—N—C (V1 = −1.0 kcal/mol) (O) and H1—CG—N—H (V1 = 0.0 kcal/mol) and H1—CG—N—C (V1 = −0.17 kcal/mol) (●), (B), in explicit solvent. Rotational energy curves about the OS—CG bond in tetrahydro-2H-pyran-3-yl acetate, B3LYP/6-31++G(2d,2p) (▲), GLYCAM06 (●), (C).