2-Fluoro-benzyl (Z)-2-(5-chloro-2-oxoindolin-3-yl-idene)hydrazine-1-carbodi-thio-ate dimethyl sulfoxide monosolvate.

In the title solvate, C16H11ClFN3OS2·C2H6OS, the C=N bond adopts a Z-configuration facilitating the formation of an intra-molecular N-H⋯O hydrogen bond to the carbonyl O atom in an S(6) loop. The di-methyl-sulfoxide solvent mol-ecule accepts a strong discrete N-H⋯O hydrogen bond from the γ-lactam grouping. In the extended structure, Car-H⋯S hydrogen bonds and quasi-Type I/II Cl⋯F halogen⋯halogen bonds are observed, while adjacent dimethyl sulfoxide mol-ecules form S⋯O chalcogen-bonded chains.