title: 2-Oxo-2-(2-oxo-2H-chromen-3-yl)ethyl pyrrolidine-1-carbodi-thio-ate.
abstract: There are two independent mol-ecules in the asymmetric unit of the title compound, C16H15NO3S2, in which the pyrrolidine rings adopt envelope conformations, with a methyl-ene C atom as the flap. The dihedral angles betweeen the near-planar 2H-chromene ring systems [maximum deviations = 0.0167 (20) and 0.0136 (19) Å] and the pyrrolidine rings (all atoms) are 83.83 (11) and 82.43 (11)°. In the crystal, inversion dimers linked by pairs of C-H⋯O hydrogen bonds occur for one of the mol-ecules. Further C-H⋯O links involving both mol-ecules generate a three-dimensional network.
authors.affiliation: Department of Chemistry, Karnatak University's Karnatak Science College, Dharwad, Karnataka 580 001, India.
authors.forename: K Mahesh
authors.initials: KM
authors.lastname: Kumar
authors.affiliation: Department of Chemistry, Karnatak University's Karnatak Science College, Dharwad, Karnataka 580 001, India.
authors.forename: N M
authors.initials: NM
authors.lastname: Mahabhaleshwaraiah
authors.affiliation: Department of Chemistry, Karnatak University's Karnatak Science College, Dharwad, Karnataka 580 001, India.
authors.forename: O
authors.initials: O
authors.lastname: Kotresh
authors.affiliation: Department of Physics, Yuvaraja's College (Constituent College), University of Mysore, Mysore 570 005, Karnataka, India.
authors.forename: K R
authors.initials: KR
authors.lastname: Roopashree
authors.affiliation: Department of Physics, Yuvaraja's College (Constituent College), University of Mysore, Mysore 570 005, Karnataka, India.
authors.forename: H C
authors.initials: HC
authors.lastname: Devarajegowda