2-(Pyridin-2-yl)-1,3-oxathiane.

The title compound, C9H11NOS, exhibits a unique structural motif, with free rotation of the aliphatic oxathiane ring about the C—C bond connecting this moiety to the aromatic pyridine ring. The structure elucidation was undertaken due to its potential as a bidentate ligand for organometallic complexes. The oxathiane ring adopts the expected chair conformation, with the S atom in proximity to the N atom on the pyridine ring. The corresponding S—C—C—N torsion angle is 69.07 (14)°. In the crystal, mol­ecules aggregate as centrosymmetric pairs connected by pairs of C—H⋯N hydrogen bonds.