The AFM technique was used to research the possibility of the supramolecular structures formation due to H-bonds based on Ni(Fe)(acac) n-systems, that are catalysts of alkylarens oxidations and also models Ni(Fe)ARD dioxygenases: {M(acac) n +L 2 +L 3 } triple systems (M=Ni II , Fe III , L 2 = NMP (NMP = N-methyl-2pirrolidone), L-histidine, L 3 = PhOH, L-tyrosine), n = 2, 3). Role of H-bonding and supramolecular structures in alkylarens oxidations, catalyzed with Ni(or Fe) complexes catalysts, and also role of supramolecular structures and Tyrfragment in mechanisms of Ni(Fe)ARD-actions is discussed.