Table 5.

Eigenvalues, λ_i, of hessian of electron density; ellipticity, ɛ; kinetic energy density, G; potential energy density (or virial field), V; total energy density, H; and ratio between G and electron density at BCP, ρ_BCP; computed at the corresponding BCPs for each hydrogen bonding, according to the AIM analysis of flavonoid V (luteolin) and XIII (quercetin) in gas phase at the B3LYP/6-311++G^** theoretical level.

H-bond	λ1	λ2	λ3	ɛ	G	H	V	G/ρBCP
HB 1	−0.059	−0.058	0.236	0.014	0.0318	−0.002	−0.034	0.84
HB 1*	−0.072	−0.071	0.271	0.016	0.0363	−0.004	−0.041	0.83
HB 2	−0.031	−0.019	0.152	0.666	0.0233	0.002	−0.021	0.90
HB 3	−0.019	−0.019	0.111	0.008	0.0155	0.003	−0.013	0.86

^*Results for luteolin.