1-[(Z)-1-Ferrocenyl-ethyl-idene]thio-carbonohydrazide.

In the title compound, [Fe(C5H5)(C8H11N4S)], the cyclo-penta-dienyl (Cp) rings of the ferrocene unit are close to being eclipsed. They are inclined to one another at an angle of 1.95 (2)° and lie 3.309 (2)Å away from each other. The ethyl-idene-thio-carbonohydrazide fragment is planar, with an r.m.s. deviation of 0.0347 (2) Å from the mean plane of its eight non-H atoms, and makes dihedral angles of 21.78 (1) and 19.97 (1)° with respect to the two Cp rings. The mol-ecule adopts a trans geometry about the C=N double bond. In the crystal, N-H⋯(N/S) and C-H⋯S inter-actions stack the mol-ecules in an inverse fashion along the b axis.