The N2S2 molecular systems with 3d metals, are well known for a long time [1]. Many potential applications were proposed, including antitumor activity [2], , however few reports can be found in the literature describing the use of MN2S2 based thiocarbazones as electrocatalysts for protons reduction.     The ligands used in this study, was prepared using a one-step reaction. The reaction consists of addition of two equivalents of N-methyl izothiocyanat or 3-isothiocyanato-benzoic acid to one equivalent of 2,3-dihydrazide-butane. The addition of one equivalent of nickel(II) salts to a suspension in methanol of one equivalent of ligand resulted in the formation of a coordination compound with the composition [NiL] in a good yield. The crude compounds do not require any kind of purification. The 1H – and 13C – NMR spectroscopies and elemental analysis data are consistent with the indicated structures.       The cyclic voltammetry experiments performed in DMF showed electrocatalytic response for H2 evolution with increasing intensity in dependence of the concentration of trifluoroacetic acid (pKa = 6.0 ± 0.3) [3]. The cyclic voltammograms exhibits a large irreversible catalytic wave for the reduction of protons. Yet in voltammograms is a difference between these two compounds, suggesting the influence of the substitutes in the 4-N thiosemicarbazone position. These promising results and the easiness to tune the system’s electrochemical behaviour by varying the ligand/metal nature could provide access to a new class of molecular catalysts for hydrogen evolution.     This is an underway theme which presents scientific interest and this is a class of substances worth to be studied from the point of view of the catalytic properties in protons reduction.