4,5-Diferrocenyl-1,2-di-thiole-3-thione.

The structure of 4,5-diferrocenyl-1,2-di-thiole-3-thione, [Fe(2)(C(5)H(5))(2)(C(13)H(8)S(3))] or C(23)H(18)Fe(2)S(3), at 130†K has monoclinic (P2(1)/c) symmetry. The molecule has two ferrocenyl units attached to a 1,2-di-thiole-3-thione moiety. It is of inter-est with respect to the question if the introduction of ferrocenyl substituents into biologically active mol-ecules offers the potential to obtain more efficacious therapeutic drugs. The crystal structure displays inter-molecular contacts of the C-H⋯S and S-π(C-C) types.