Crystal structure of (Z)-2-(5-fluoro-2-oxoindolin-3-yl-idene)hydrazinecarbo-thio-amide.

In the title compound, C9H7FN4OS, the mol-ecules are almost planar, with an r.m.s. deviation of 0.047 (3) Šfrom the mean plane defined by the non-H atoms and a maximum deviation of 0.123 (2) Šfor the amine N atom. The torsion angle for the N-N-C-S unit is 176.57 (19)°. In the crystal, mol-ecules are linked into inversion dimers via pairs of N-H⋯F hydrogen bonds and, additionally, through N-H⋯O and N-H⋯S hydrogen bonds, building a two-dimensional hydrogen-bond network parallel to the (103) plane. An intra-molecular N-H⋯O inter-action is also observed.