2-(5-Bromopyridin-3-yl)-5-[3-(4,5,6,7-tetrahydrothieno[3,2-c] pyridine-5-ylsulfon-yl)thio-phen-2-yl]-1,3,4-oxa-diazole

Abstract

In the title compound, C <inf>18</inf>H <inf>13</inf>BrN <inf>4</inf>O <inf>3</inf>S <inf>3</inf>, the tetra-hydro-pyridine ring adopts a half-chair conformation with the central methylene-C atom of the NCH <inf>2</inf>CH <inf>2</inf> unit at the flap. The dihedral angles between the tetra-hydro-pyridine ring and the pyridine and two thiophene rings are 69.34 (13) 5.66 (13) and 68.63 (13)°, respectively, while the dihedral angle between the 1,3,4-oxadiazole and tetrahydropyridine rings is 54.76 (13)°. The molecule is stabilized by an intramolecular C-H?N interaction. In the crystal, adjacent molecules are connected via bifurcated C-H?(N,O) hydrogen bonds, forming a chain along the b axis.