Ethyl 4-hydroxy-2,6-diphenyl-5-(phenylsulfanyl)pyridine-3-carboxylate and ethyl 2,6-bis(4-fluorophenyl)-4-hydroxy-5-(4-methylphenylsulfanyl)pyridine-3-carboxylate:: supramolecular aggregation through C-H•••O, C-H•••F and C-H•••π interactions

The title polysubstituted pyridines, ethyl 4-hydroxy-2,6-diphenyl-5-(phenylsulfanyl) pyridine-3-carboxylate, C26H21NO3S, (I), and ethyl 2,6-bis(4-uorophenyl)-4-hydroxy-5-(4-methylphenylsulfanyl) pyridine-3-carboxylate, C27H21F2NO3S, (II), adopt nearly planar structures. The crystal structure of (I) is stabilized by intermolecular C-(HO)-O-... and C-H-... interactions. The C-(HO)-O-... hydrogen bonds generate rings of motifs R-2(2)(14) and R-2(2)(20). The crystal structure of (II) is stabilized by intermolecular C-(HF)-F-... and C-H-...pi interactions. The C-(HF)-F-... bond generates a linear chain of motif C(14). In addition, in (I) and (II), intramolecular O-(HO)-O-... interactions generating a graph-set motif S(6) are found. No significant aryl-aryl or pi-pi interactions exist in these structures.