Isoflavones and Isoflavone Glycosides: Structural-Electronic Properties and Antioxidant Relations—A Case of DFT Study

Figure 6

HOMO and LUMO of structural radicals 1–4. (a) HOMO-5-OH radical (1). (b) HOMO-7-OH radical (1). (c) HOMO-4′-OH radical (1). (d) LUMO-5-OH radical (1). (e) LUMO-7-OH radical (1). (f) LUMO-4′-OH radical (1). (g) HOMO-5-OH radical (2). (h) HOMO-7-OH radical (2). (i) HOMO-5-OH radical (3). (j) LUMO-5-OH radical (2). (k) LUMO-7-OH radical (2). (l) LUMO-5-OH radical (3). (m) HOMO-4′-OH radical (3). (n) HOMO-5-OH radical (4). (o) HOMO-4′-OH radical (4). (p) LUMO-4′-OH radical (3). (q) LUMO-5-OH radical (4). (r) LUMO-4′-OH radical (4).