Table 7. Calculated Atomic Charge (NBO) of Oxygen (O3H), Hydrogen (HC6′), Hydrogen (O3H), and Carbon-Bound Oxygen (OC4) of the Flavonoids Using the CAM-B3LYP/def2TZV Calculations.

atoms	flavan	anthocyanidin	flavanone	flavonol	isoflavone	flavone	flavan-3-ol
O3H(O)		–0.633		–0.655			–0.696
HC6′		0.261	0.213	0.256	0.234	0.221	0.209
O3H(H)		0.503		0.505			0.463
OC4			–0.512	–0.583	–0.541	–0.542