dioxygen

The role of intra- and intermolecular H-bonds in mechanisms of catalysis with triple heterobinuclear hetero ligand complexes NiII(acac)2∙NaSt(LiSt)∙PhOH, including nickel and redox-inactive metal Na(Li), in the ethylbenzene oxidation by dioxygen into -phenyl ethyl hydroperoxide is discussed. The AFM method has been used for research of the stable supramolecular nanostructures formation possibility on the basis of triple complex NiII(acac)2∙NaSt∙PhOH, with the assistance of intermolecular H-bonds.

The possibility of the supramolecular nano structures formation on the basis of iron and nickel heteroligand complexes: Fex(acac)y18C6m(H2O)n, and Fex(acac)y(CTAB)p(H2O)q, or Ni2(OAc)3(acac)L2•2H2O (L2 = MP)  with the assistance of H-bonding, is researched using the AFM method. Formation of different supramolecular nanostructures on the basis of nickel and iron heteroligand complexes as models for Ni(Fe)ARD Dioxygenases may be used for understanding of different actions of these enzymes.

Mechanism of catalysis with binary and triple catalytic systems based on redox inactive metal (lithium) compound {LiSt+L2} and {LiSt+L2+PhOH} (L2=DMF or HMPA), in the selective ethylbenzene oxidation by dioxygen into -phenylethyl hydroperoxide is researched. The results are compared with catalysis by nickel-lithium triple system {NiII(acac)2+LiSt+PhOH} in selective ethylbenzene oxidation to PEH. The role of H-bonding in mechanism of catalysis is discussed.