SEARCH Articles Figures Tables 6-Membered rings aromatic ring Aromatic fused-ring Aromatic six-membered rings Aromaticity aromatic heterocycles Aromaticity fused ring aromatics Aromaticity heterocyclics Fused Selenophens Fused heterocyclic Fused rings Fused rings, aromaticity Fused six-membered rings Fused-ring aromatics Heterocycles aromatic Heterocycles aromatic, 5-ring Heterocycles aromatization Heterocycles fused Heterocycles six-membered ring Heterocyclic 5- membered ring Heterocyclic aromatics Heterocyclics six-membered Membered Aromatic Rings Rings six-member Selenophene Selenophene aromaticity Selenophens Six-Membered Heterocycled Six-membered heterocycles Six-membered heterocyclic rings