“…21,28 Variation of functional sulfur-containing ligands (R) in the synthetic models of [1Fe-2S] and [2Fe-2S] proteins, and of the synthesis conditions provides more thorough fundamental knowledge of the structure of the {RS 2 Fe(NO) 2 } unit, 25,[29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44] while the investigation of the pharmacological activity of these compounds, in addition to the known NO properties, opens the possibilities for practical application of mimetics of nitrosyl non-heme proteins as effective NO-generating compounds for the therapy of socially significant diseases. [45][46][47][48][49][50][51][52] In the present work, thiocarbamide having a wide range of biological activity, including antituberculosis, antibacterial 53,54 and antithyroid 55 properties, was used as a functional sulfurcontaining ligand. Besides, the thiocarbamide molecule has a complex resonance structure, and in the solution the equilibrium can shift either to the thiol or thione form depending on the acidity, this being responsible for structural variety of this ligand and the related complexes.…”