(7-Chloro-2-oxo-2H-chromen-4-yl)methyl di­ethyl­carbamodi­thio­ate

In the title compound, C₁₅H₁₆ClNO₂S₂, the 2H-chromene ring system is nearly planar, with a maximum deviation of 0.023 (2) Å. In the crystal, C—H...O hydrogen bonds give R₂¹(7) motifs, which generate [100] chains. C—H...π and π–π inter­actions between chromene moieties [shortest ring centroid–centroid distance = 3.6199 (13) Å] consolidate the packing.

2-Oxo-2-(2-oxo-2H-chromen-3-yl)ethyl di­ethyl­dithio­carbamate

In the title compound, C₁₆H₁₇NO₃S₂, the dihedral angles between the O/C/C/S group and the 2H-chromene ring system and the thio­carbamate group are 14.46 (9) and 83.30 (9)°, respectively. The bond-angle sum at the N atom is 360.0°. One of the methyl C atoms lies above the thio­carbamate plane and one lies below it [deviations = 1.264 (3) and −1.147 (3) Å, respectively]. In the crystal, inversion dimers linked by pairs of C—H...O hydrogen bonds generate R₂²(10) loops. Weak aromatic π–π stacking inter­actions [shortest centroid–centroid distance = 3.8138 (11) Å] are also observed.